{"version":3,"file":"collection-deletion-B8tSUQ7U.mjs","names":[],"sources":["../src/media/usage/capture-triggers.ts","../src/media/usage/collection-deletion.ts"],"sourcesContent":["import { sql, type Kysely, type RawBuilder } from \"kysely\";\n\nimport { isPostgres, tableExists } from \"../../database/dialect-helpers.js\";\nimport type { Database } from \"../../database/types.js\";\nimport { validateIdentifier } from \"../../database/validate.js\";\n\nconst POSTGRES_TRIGGER_FUNCTION = \"emdash_media_usage_capture_work\";\nconst POSTGRES_IDENTIFIER_LIMIT = 63;\nconst CAPTURE_TRIGGER_VERSION = 1;\nconst OWNED_TRIGGER_PREFIX = \"emdash_mu_\";\nconst WHITESPACE_PATTERN = /\\s+/g;\nconst TRAILING_SEMICOLON_PATTERN = /;$/;\n\nexport interface MediaUsageCaptureIdentity {\n\tcollectionId: string;\n\tcollectionSlug: string;\n}\n\ntype CaptureOperation = \"insert\" | \"update\" | \"delete\";\n\nexport async function installMediaUsageCaptureTriggers(\n\tdb: Kysely<Database>,\n\tidentity: MediaUsageCaptureIdentity,\n\toptions: { replaceExisting?: boolean } = {},\n): Promise<void> {\n\tconst identifiers = await captureIdentifiers(identity);\n\tif (isPostgres(db)) await installPostgresFunction(db);\n\tconst installedNames = await listOwnedCaptureTriggers(db, identifiers.tableName);\n\tif (await hasExactCaptureTriggers(db, identifiers, identity, installedNames)) {\n\t\treturn;\n\t}\n\n\tawait assertCaptureLifecycle(db, identity, [\"installing\"]);\n\tconst expectedNames = new Set(Object.values(identifiers.triggerNames));\n\tconst retainedNames = new Set(\n\t\toptions.replaceExisting === false\n\t\t\t? installedNames.filter((name) => expectedNames.has(name))\n\t\t\t: [],\n\t);\n\tawait removeCaptureTriggers(\n\t\tdb,\n\t\tidentifiers.tableName,\n\t\tinstalledNames.filter((name) => !retainedNames.has(name)),\n\t);\n\n\tfor (const operation of captureOperations) {\n\t\tif (retainedNames.has(identifiers.triggerNames[operation])) continue;\n\t\tif (isPostgres(db)) {\n\t\t\tawait postgresCreateTrigger(\n\t\t\t\tdb,\n\t\t\t\tidentifiers.tableName,\n\t\t\t\tidentifiers.triggerNames[operation],\n\t\t\t\toperation,\n\t\t\t\tidentity,\n\t\t\t);\n\t\t} else {\n\t\t\tawait sqliteCreateTrigger(\n\t\t\t\tdb,\n\t\t\t\tidentifiers.tableName,\n\t\t\t\tidentifiers.triggerNames[operation],\n\t\t\t\toperation,\n\t\t\t\tidentity,\n\t\t\t);\n\t\t}\n\t}\n\n\tawait assertExpectedTriggerSet(db, identifiers, identity);\n}\n\nexport async function verifyMediaUsageCaptureTriggers(\n\tdb: Kysely<Database>,\n\tidentity: MediaUsageCaptureIdentity,\n): Promise<boolean> {\n\tconst identifiers = await captureIdentifiers(identity);\n\tif (!(await tableExists(db, identifiers.tableName))) return false;\n\treturn hasExactCaptureTriggers(\n\t\tdb,\n\t\tidentifiers,\n\t\tidentity,\n\t\tawait listOwnedCaptureTriggers(db, identifiers.tableName),\n\t);\n}\n\nexport async function removeMediaUsageCaptureTriggers(\n\tdb: Kysely<Database>,\n\tidentity: MediaUsageCaptureIdentity,\n): Promise<void> {\n\tconst identifiers = await captureIdentifiers(identity);\n\tif (!(await tableExists(db, identifiers.tableName))) return;\n\tawait assertCaptureLifecycle(db, identity, [\"installing\", \"deleting\"]);\n\tawait removeCaptureTriggers(\n\t\tdb,\n\t\tidentifiers.tableName,\n\t\tawait listOwnedCaptureTriggers(db, identifiers.tableName),\n\t);\n}\n\nconst captureOperations: readonly CaptureOperation[] = [\"insert\", \"update\", \"delete\"];\n\nasync function captureIdentifiers(identity: MediaUsageCaptureIdentity): Promise<{\n\ttableName: string;\n\ttriggerNames: Record<CaptureOperation, string>;\n}> {\n\tvalidateIdentifier(identity.collectionSlug, \"collection slug\");\n\tconst tableName = `ec_${identity.collectionSlug}`;\n\tvalidateIdentifier(tableName, \"content table\");\n\n\tconst digest = await identityDigest(\n\t\t`${CAPTURE_TRIGGER_VERSION}:${identity.collectionId}:${identity.collectionSlug}`,\n\t);\n\tconst triggerNames = {\n\t\tinsert: `emdash_mu_${digest}_ai`,\n\t\tupdate: `emdash_mu_${digest}_au`,\n\t\tdelete: `emdash_mu_${digest}_ad`,\n\t};\n\tfor (const triggerName of Object.values(triggerNames)) {\n\t\tvalidateIdentifier(triggerName, \"media usage trigger\");\n\t\tif (triggerName.length > POSTGRES_IDENTIFIER_LIMIT) {\n\t\t\tthrow new Error(`Media usage trigger name exceeds ${POSTGRES_IDENTIFIER_LIMIT} bytes`);\n\t\t}\n\t}\n\n\treturn { tableName, triggerNames };\n}\n\nasync function identityDigest(value: string): Promise<string> {\n\tconst digest = await crypto.subtle.digest(\"SHA-256\", new TextEncoder().encode(value));\n\treturn Array.from(new Uint8Array(digest).slice(0, 16), (byte) =>\n\t\tbyte.toString(16).padStart(2, \"0\"),\n\t).join(\"\");\n}\n\nasync function removeCaptureTriggers(\n\tdb: Kysely<Database>,\n\ttableName: string,\n\ttriggerNames: readonly string[],\n): Promise<void> {\n\tfor (const triggerName of triggerNames) {\n\t\tvalidateIdentifier(triggerName, \"media usage trigger\");\n\t\tif (isPostgres(db)) {\n\t\t\tawait sql`\n\t\t\t\tDROP TRIGGER IF EXISTS ${sql.ref(triggerName)} ON ${sql.ref(tableName)}\n\t\t\t`.execute(db);\n\t\t} else {\n\t\t\tawait sql`DROP TRIGGER IF EXISTS ${sql.ref(triggerName)}`.execute(db);\n\t\t}\n\t}\n}\n\nasync function listOwnedCaptureTriggers(\n\tdb: Kysely<Database>,\n\ttableName: string,\n): Promise<string[]> {\n\tif (isPostgres(db)) {\n\t\tconst result = await sql<{ name: string }>`\n\t\t\tSELECT trigger.tgname AS name\n\t\t\tFROM pg_trigger AS trigger\n\t\t\tINNER JOIN pg_class AS relation ON relation.oid = trigger.tgrelid\n\t\t\tINNER JOIN pg_namespace AS namespace ON namespace.oid = relation.relnamespace\n\t\t\tWHERE namespace.nspname = current_schema()\n\t\t\t\tAND relation.relname = ${tableName}\n\t\t\t\tAND NOT trigger.tgisinternal\n\t\t\t\tAND left(trigger.tgname, 10) = ${OWNED_TRIGGER_PREFIX}\n\t\t`.execute(db);\n\t\treturn result.rows.map((row) => row.name);\n\t}\n\n\tconst result = await sql<{ name: string }>`\n\t\tSELECT name\n\t\tFROM sqlite_master\n\t\tWHERE type = 'trigger'\n\t\t\tAND tbl_name = ${tableName}\n\t\t\tAND substr(name, 1, 10) = ${OWNED_TRIGGER_PREFIX}\n\t`.execute(db);\n\treturn result.rows.map((row) => row.name);\n}\n\nasync function hasExactCaptureTriggers(\n\tdb: Kysely<Database>,\n\tidentifiers: {\n\t\ttableName: string;\n\t\ttriggerNames: Record<CaptureOperation, string>;\n\t},\n\tidentity: MediaUsageCaptureIdentity,\n\tinstalledNames: readonly string[],\n): Promise<boolean> {\n\tconst expectedNames = new Set(Object.values(identifiers.triggerNames));\n\tif (\n\t\tinstalledNames.length !== expectedNames.size ||\n\t\tinstalledNames.some((name) => !expectedNames.has(name))\n\t) {\n\t\treturn false;\n\t}\n\n\tif (isPostgres(db)) {\n\t\tconst result = await sql<{\n\t\t\tname: string;\n\t\t\ttrigger_type: number;\n\t\t\tfunction_name: string;\n\t\t\targuments_hex: string;\n\t\t\tenabled: string;\n\t\t\thas_when: boolean;\n\t\t}>`\n\t\t\tSELECT\n\t\t\t\ttrigger.tgname AS name,\n\t\t\t\ttrigger.tgtype AS trigger_type,\n\t\t\t\tprocedure.proname AS function_name,\n\t\t\t\tencode(trigger.tgargs, 'hex') AS arguments_hex,\n\t\t\t\ttrigger.tgenabled AS enabled,\n\t\t\t\ttrigger.tgqual IS NOT NULL AS has_when\n\t\t\tFROM pg_trigger AS trigger\n\t\t\tINNER JOIN pg_class AS relation ON relation.oid = trigger.tgrelid\n\t\t\tINNER JOIN pg_namespace AS namespace ON namespace.oid = relation.relnamespace\n\t\t\tINNER JOIN pg_proc AS procedure ON procedure.oid = trigger.tgfoid\n\t\t\tINNER JOIN pg_namespace AS function_namespace ON function_namespace.oid = procedure.pronamespace\n\t\t\tWHERE namespace.nspname = current_schema()\n\t\t\t\tAND function_namespace.nspname = current_schema()\n\t\t\t\tAND relation.relname = ${identifiers.tableName}\n\t\t\t\tAND NOT trigger.tgisinternal\n\t\t\t\tAND trigger.tgconstraint = 0\n\t\t\t\tAND NOT trigger.tgdeferrable\n\t\t\t\tAND NOT trigger.tginitdeferred\n\t\t\t\tAND trigger.tgattr = ''::int2vector\n\t\t\t\tAND left(trigger.tgname, 10) = ${OWNED_TRIGGER_PREFIX}\n\t\t`.execute(db);\n\t\tconst expectedArguments = triggerArgumentsHex(identity);\n\t\treturn captureOperations.every((operation) => {\n\t\t\tconst row = result.rows.find(\n\t\t\t\t(candidate) => candidate.name === identifiers.triggerNames[operation],\n\t\t\t);\n\t\t\treturn (\n\t\t\t\trow?.function_name === POSTGRES_TRIGGER_FUNCTION &&\n\t\t\t\tNumber(row.trigger_type) === postgresTriggerType(operation) &&\n\t\t\t\trow.arguments_hex === expectedArguments &&\n\t\t\t\trow.enabled === \"O\" &&\n\t\t\t\trow.has_when === false\n\t\t\t);\n\t\t});\n\t}\n\n\tconst result = await sql<{ name: string; definition: string }>`\n\t\tSELECT name, sql AS definition\n\t\tFROM sqlite_master\n\t\tWHERE type = 'trigger'\n\t\t\tAND tbl_name = ${identifiers.tableName}\n\t\t\tAND substr(name, 1, 10) = ${OWNED_TRIGGER_PREFIX}\n\t`.execute(db);\n\treturn captureOperations.every((operation) => {\n\t\tconst row = result.rows.find(\n\t\t\t(candidate) => candidate.name === identifiers.triggerNames[operation],\n\t\t);\n\t\tconst contentId = operation === \"delete\" ? sql`OLD.id` : sql`NEW.id`;\n\t\tconst expected = sqliteTriggerSql(\n\t\t\tidentifiers.tableName,\n\t\t\tidentifiers.triggerNames[operation],\n\t\t\toperationSql(operation),\n\t\t\tcontentId,\n\t\t\tidentity,\n\t\t).compile(db).sql;\n\t\treturn row ? normalizeDdl(row.definition) === normalizeDdl(expected) : false;\n\t});\n}\n\nfunction triggerArgumentsHex(identity: MediaUsageCaptureIdentity): string {\n\tconst bytes = new TextEncoder().encode(`${identity.collectionId}\\0${identity.collectionSlug}\\0`);\n\treturn Array.from(bytes, (byte) => byte.toString(16).padStart(2, \"0\")).join(\"\");\n}\n\nfunction postgresTriggerType(operation: CaptureOperation): number {\n\tswitch (operation) {\n\t\tcase \"insert\":\n\t\t\treturn 5;\n\t\tcase \"update\":\n\t\t\treturn 17;\n\t\tcase \"delete\":\n\t\t\treturn 9;\n\t}\n}\n\nfunction normalizeDdl(definition: string): string {\n\treturn definition.replace(WHITESPACE_PATTERN, \" \").trim().replace(TRAILING_SEMICOLON_PATTERN, \"\");\n}\n\nasync function assertCaptureLifecycle(\n\tdb: Kysely<Database>,\n\tidentity: MediaUsageCaptureIdentity,\n\tallowedStates: readonly string[],\n): Promise<void> {\n\tconst lifecycle = await db\n\t\t.selectFrom(\"_emdash_media_usage_index_status\")\n\t\t.select(\"capture_state\")\n\t\t.where(\"adapter_id\", \"=\", \"content-media\")\n\t\t.where(\"scope_type\", \"=\", \"collection\")\n\t\t.where(\"scope_key\", \"=\", identity.collectionSlug)\n\t\t.where(\"collection_id\", \"=\", identity.collectionId)\n\t\t.executeTakeFirst();\n\tif (!lifecycle?.capture_state || !allowedStates.includes(lifecycle.capture_state)) {\n\t\tthrow new Error(\"Media usage capture trigger changes require a fenced collection lifecycle\");\n\t}\n}\n\nasync function assertExpectedTriggerSet(\n\tdb: Kysely<Database>,\n\tidentifiers: {\n\t\ttableName: string;\n\t\ttriggerNames: Record<CaptureOperation, string>;\n\t},\n\tidentity: MediaUsageCaptureIdentity,\n): Promise<void> {\n\tconst actual = await listOwnedCaptureTriggers(db, identifiers.tableName);\n\tif (!(await hasExactCaptureTriggers(db, identifiers, identity, actual))) {\n\t\tthrow new Error(\"Media usage capture trigger installation is incomplete\");\n\t}\n}\n\nasync function installPostgresFunction(db: Kysely<Database>): Promise<void> {\n\tawait sql`\n\t\tCREATE OR REPLACE FUNCTION ${sql.ref(POSTGRES_TRIGGER_FUNCTION)}()\n\t\tRETURNS trigger\n\t\tLANGUAGE plpgsql\n\t\tAS $function$\n\t\tDECLARE\n\t\t\tv_collection_id text := TG_ARGV[0];\n\t\t\tv_collection_slug text := TG_ARGV[1];\n\t\t\tv_content_id text;\n\t\t\tv_epoch bigint;\n\t\t\tv_now text := to_char(\n\t\t\t\tclock_timestamp() AT TIME ZONE 'UTC',\n\t\t\t\t'YYYY-MM-DD\"T\"HH24:MI:SS.MS\"Z\"'\n\t\t\t);\n\t\tBEGIN\n\t\t\tIF TG_OP = 'DELETE' THEN\n\t\t\t\tv_content_id := OLD.id;\n\t\t\tELSE\n\t\t\t\tv_content_id := NEW.id;\n\t\t\tEND IF;\n\n\t\t\tUPDATE _emdash_media_usage_index_status\n\t\t\tSET change_epoch = change_epoch + 1,\n\t\t\t\tstatus = CASE WHEN status = 'complete' THEN 'stale' ELSE status END,\n\t\t\t\tcompleted_at = CASE WHEN status = 'complete' THEN NULL ELSE completed_at END,\n\t\t\t\tupdated_at = v_now\n\t\t\tWHERE adapter_id = 'content-media'\n\t\t\t\tAND scope_type = 'collection'\n\t\t\t\tAND scope_key = v_collection_slug\n\t\t\t\tAND collection_id = v_collection_id\n\t\t\t\tAND capture_state = 'active'\n\t\t\t\tAND EXISTS (\n\t\t\t\t\tSELECT 1\n\t\t\t\t\tFROM _emdash_collections AS collection\n\t\t\t\t\tWHERE collection.id = v_collection_id\n\t\t\t\t\t\tAND collection.slug = v_collection_slug\n\t\t\t\t)\n\t\t\tRETURNING change_epoch INTO v_epoch;\n\n\t\t\tIF NOT FOUND THEN\n\t\t\t\tRAISE EXCEPTION USING\n\t\t\t\t\tERRCODE = 'P0001',\n\t\t\t\t\tMESSAGE = 'media usage capture inactive';\n\t\t\tEND IF;\n\n\t\t\tINSERT INTO _emdash_media_usage_work (\n\t\t\t\tcollection_id,\n\t\t\t\tcollection_slug,\n\t\t\t\tcontent_id,\n\t\t\t\tchange_epoch,\n\t\t\t\twork_version,\n\t\t\t\tstate,\n\t\t\t\tattempt_count,\n\t\t\t\tnext_attempt_at,\n\t\t\t\tlease_token,\n\t\t\t\tlease_expires_at,\n\t\t\t\tlast_attempted_at,\n\t\t\t\tlast_error_code,\n\t\t\t\tcreated_at,\n\t\t\t\tupdated_at\n\t\t\t)\n\t\t\tVALUES (\n\t\t\t\tv_collection_id,\n\t\t\t\tv_collection_slug,\n\t\t\t\tv_content_id,\n\t\t\t\tv_epoch,\n\t\t\t\t1,\n\t\t\t\t'pending',\n\t\t\t\t0,\n\t\t\t\tv_now,\n\t\t\t\tNULL,\n\t\t\t\tNULL,\n\t\t\t\tNULL,\n\t\t\t\tNULL,\n\t\t\t\tv_now,\n\t\t\t\tv_now\n\t\t\t)\n\t\t\tON CONFLICT (collection_id, content_id) DO UPDATE SET\n\t\t\t\tcollection_slug = EXCLUDED.collection_slug,\n\t\t\t\tchange_epoch = EXCLUDED.change_epoch,\n\t\t\t\twork_version = _emdash_media_usage_work.work_version + 1,\n\t\t\t\tstate = 'pending',\n\t\t\t\tattempt_count = 0,\n\t\t\t\tnext_attempt_at = EXCLUDED.next_attempt_at,\n\t\t\t\tlease_token = NULL,\n\t\t\t\tlease_expires_at = NULL,\n\t\t\t\tlast_attempted_at = NULL,\n\t\t\t\tlast_error_code = NULL,\n\t\t\t\tupdated_at = EXCLUDED.updated_at;\n\n\t\t\tRETURN NULL;\n\t\tEND;\n\t\t$function$\n\t`.execute(db);\n}\n\nasync function postgresCreateTrigger(\n\tdb: Kysely<Database>,\n\ttableName: string,\n\ttriggerName: string,\n\toperation: CaptureOperation,\n\tidentity: MediaUsageCaptureIdentity,\n): Promise<void> {\n\tawait sql`\n\t\tCREATE TRIGGER ${sql.ref(triggerName)}\n\t\tAFTER ${operationSql(operation)} ON ${sql.ref(tableName)}\n\t\tFOR EACH ROW\n\t\tEXECUTE FUNCTION ${sql.ref(POSTGRES_TRIGGER_FUNCTION)}(\n\t\t\t${sql.lit(identity.collectionId)},\n\t\t\t${sql.lit(identity.collectionSlug)}\n\t\t)\n\t`.execute(db);\n}\n\nasync function sqliteCreateTrigger(\n\tdb: Kysely<Database>,\n\ttableName: string,\n\ttriggerName: string,\n\toperation: CaptureOperation,\n\tidentity: MediaUsageCaptureIdentity,\n): Promise<void> {\n\tconst contentId = operation === \"delete\" ? sql`OLD.id` : sql`NEW.id`;\n\tawait sqliteTriggerSql(\n\t\ttableName,\n\t\ttriggerName,\n\t\toperationSql(operation),\n\t\tcontentId,\n\t\tidentity,\n\t).execute(db);\n}\n\nfunction sqliteTriggerSql(\n\ttableName: string,\n\ttriggerName: string,\n\toperation: RawBuilder<unknown>,\n\tcontentId: RawBuilder<unknown>,\n\tidentity: MediaUsageCaptureIdentity,\n): RawBuilder<unknown> {\n\treturn sql`\n\t\tCREATE TRIGGER ${sql.ref(triggerName)}\n\t\tAFTER ${operation} ON ${sql.ref(tableName)}\n\t\tFOR EACH ROW\n\t\tBEGIN\n\t\t\tUPDATE _emdash_media_usage_index_status\n\t\t\tSET change_epoch = change_epoch + 1,\n\t\t\t\tstatus = CASE WHEN status = 'complete' THEN 'stale' ELSE status END,\n\t\t\t\tcompleted_at = CASE WHEN status = 'complete' THEN NULL ELSE completed_at END,\n\t\t\t\tupdated_at = strftime('%Y-%m-%dT%H:%M:%fZ', 'now')\n\t\t\tWHERE adapter_id = 'content-media'\n\t\t\t\tAND scope_type = 'collection'\n\t\t\t\tAND scope_key = ${sql.lit(identity.collectionSlug)}\n\t\t\t\tAND collection_id = ${sql.lit(identity.collectionId)}\n\t\t\t\tAND capture_state = 'active'\n\t\t\t\tAND EXISTS (\n\t\t\t\t\tSELECT 1\n\t\t\t\t\tFROM _emdash_collections AS collection\n\t\t\t\t\tWHERE collection.id = ${sql.lit(identity.collectionId)}\n\t\t\t\t\t\tAND collection.slug = ${sql.lit(identity.collectionSlug)}\n\t\t\t\t);\n\n\t\t\tSELECT CASE\n\t\t\t\tWHEN changes() <> 1 THEN RAISE(ABORT, 'media usage capture inactive')\n\t\t\tEND;\n\n\t\t\tINSERT INTO _emdash_media_usage_work (\n\t\t\t\tcollection_id,\n\t\t\t\tcollection_slug,\n\t\t\t\tcontent_id,\n\t\t\t\tchange_epoch,\n\t\t\t\twork_version,\n\t\t\t\tstate,\n\t\t\t\tattempt_count,\n\t\t\t\tnext_attempt_at,\n\t\t\t\tlease_token,\n\t\t\t\tlease_expires_at,\n\t\t\t\tlast_attempted_at,\n\t\t\t\tlast_error_code,\n\t\t\t\tcreated_at,\n\t\t\t\tupdated_at\n\t\t\t)\n\t\t\tSELECT\n\t\t\t\t${sql.lit(identity.collectionId)},\n\t\t\t\t${sql.lit(identity.collectionSlug)},\n\t\t\t\t${contentId},\n\t\t\t\tchange_epoch,\n\t\t\t\t1,\n\t\t\t\t'pending',\n\t\t\t\t0,\n\t\t\t\tstrftime('%Y-%m-%dT%H:%M:%fZ', 'now'),\n\t\t\t\tNULL,\n\t\t\t\tNULL,\n\t\t\t\tNULL,\n\t\t\t\tNULL,\n\t\t\t\tstrftime('%Y-%m-%dT%H:%M:%fZ', 'now'),\n\t\t\t\tstrftime('%Y-%m-%dT%H:%M:%fZ', 'now')\n\t\t\tFROM _emdash_media_usage_index_status\n\t\t\tWHERE adapter_id = 'content-media'\n\t\t\t\tAND scope_type = 'collection'\n\t\t\t\tAND scope_key = ${sql.lit(identity.collectionSlug)}\n\t\t\t\tAND collection_id = ${sql.lit(identity.collectionId)}\n\t\t\t\tAND capture_state = 'active'\n\t\t\tON CONFLICT (collection_id, content_id) DO UPDATE SET\n\t\t\t\tcollection_slug = excluded.collection_slug,\n\t\t\t\tchange_epoch = excluded.change_epoch,\n\t\t\t\twork_version = _emdash_media_usage_work.work_version + 1,\n\t\t\t\tstate = 'pending',\n\t\t\t\tattempt_count = 0,\n\t\t\t\tnext_attempt_at = excluded.next_attempt_at,\n\t\t\t\tlease_token = NULL,\n\t\t\t\tlease_expires_at = NULL,\n\t\t\t\tlast_attempted_at = NULL,\n\t\t\t\tlast_error_code = NULL,\n\t\t\t\tupdated_at = excluded.updated_at;\n\t\tEND\n\t`;\n}\n\nfunction operationSql(operation: CaptureOperation): RawBuilder<unknown> {\n\tswitch (operation) {\n\t\tcase \"insert\":\n\t\t\treturn sql`INSERT`;\n\t\tcase \"update\":\n\t\t\treturn sql`UPDATE`;\n\t\tcase \"delete\":\n\t\t\treturn sql`DELETE`;\n\t}\n}\n","import { sql, type Kysely, type RawBuilder, type Selectable, type Transaction } from \"kysely\";\nimport { ulid } from \"ulidx\";\n\nimport { isPostgres } from \"../../database/dialect-helpers.js\";\nimport {\n\tdecodeCursor,\n\tencodeCursor,\n\ttype FindManyResult,\n} from \"../../database/repositories/types.js\";\nimport { withTransaction } from \"../../database/transaction.js\";\nimport type { Database, MediaUsageCollectionDeletionTable } from \"../../database/types.js\";\nimport { validateIdentifier } from \"../../database/validate.js\";\nimport type {\n\tCollectionDeletionGuardInput,\n\tCollectionDeletionGuardResult,\n} from \"../../db/adapters.js\";\nimport { FTSManager } from \"../../search/fts-manager.js\";\nimport { isMissingTableError } from \"../../utils/db-errors.js\";\nimport { verifyMediaUsageCaptureTriggers } from \"./capture-triggers.js\";\n\nconst ACTIVATION_KEY = \"incremental_capture\";\nconst VIRTUAL_DIALECT_ID = \"virtual:emdash/dialect\";\n\nexport type MediaUsageCollectionDeletionState = \"pending\" | \"retry\" | \"leased\" | \"failed\";\nexport type MediaUsageCollectionDeletionPhase =\n\t| \"fence\"\n\t| \"registry\"\n\t| \"table\"\n\t| \"work\"\n\t| \"sources\"\n\t| \"status\"\n\t| \"finalize\";\n\nexport interface MediaUsageCollectionDeletionRecord {\n\tcollectionId: string;\n\tcollectionSlug: string;\n\tforceDelete: boolean;\n\tstate: MediaUsageCollectionDeletionState;\n\tphase: MediaUsageCollectionDeletionPhase;\n\tworkCursor: string | null;\n\tsourceKey: string | null;\n\toccurrenceCursor: string | null;\n\tattemptCount: number;\n\tnextAttemptAt: string;\n\tleaseToken: string | null;\n\tleaseExpiresAt: string | null;\n\tlastErrorCode: string | null;\n\tcreatedAt: string;\n\tupdatedAt: string;\n}\n\nexport interface MediaUsageCollectionDeletionOperatorItem {\n\tcollectionId: string;\n\tcollectionSlug: string;\n\tstate: MediaUsageCollectionDeletionState;\n\tphase: MediaUsageCollectionDeletionPhase;\n\tattemptCount: number;\n\tnextAttemptAt: string;\n\tleaseExpiresAt: string | null;\n\tlastErrorCode: string | null;\n\tupdatedAt: string;\n}\n\nexport type MediaUsageCollectionDeletionRetryResult =\n\t| { outcome: \"pending\"; changed: boolean; item: MediaUsageCollectionDeletionOperatorItem }\n\t| { outcome: \"lease_active\"; leaseExpiresAt: string }\n\t| { outcome: \"not_found\" }\n\t| { outcome: \"conflict\" };\n\nexport class MediaUsageCollectionDeletionRepository {\n\tconstructor(private db: Kysely<Database>) {}\n\n\tasync createTombstone(input: {\n\t\tcollectionId: string;\n\t\tcollectionSlug: string;\n\t\tforceDelete: boolean;\n\t}): Promise<MediaUsageCollectionDeletionRecord> {\n\t\tassertIdentity(input);\n\t\tconst now = timestampOffset(this.db, 0);\n\t\tawait this.db\n\t\t\t.insertInto(\"_emdash_media_usage_collection_deletions\")\n\t\t\t.values({\n\t\t\t\tcollection_id: input.collectionId,\n\t\t\t\tcollection_slug: input.collectionSlug,\n\t\t\t\tforce_delete: input.forceDelete ? 1 : 0,\n\t\t\t\tstate: \"pending\",\n\t\t\t\tphase: \"fence\",\n\t\t\t\tnext_attempt_at: now,\n\t\t\t\tupdated_at: now,\n\t\t\t})\n\t\t\t.onConflict((conflict) => conflict.column(\"collection_id\").doNothing())\n\t\t\t.execute();\n\n\t\tconst row = await this.db\n\t\t\t.selectFrom(\"_emdash_media_usage_collection_deletions\")\n\t\t\t.selectAll()\n\t\t\t.where(\"collection_id\", \"=\", input.collectionId)\n\t\t\t.executeTakeFirstOrThrow();\n\t\tif (\n\t\t\trow.collection_slug !== input.collectionSlug ||\n\t\t\tBoolean(row.force_delete) !== input.forceDelete\n\t\t) {\n\t\t\tthrow new Error(\"Collection deletion tombstone identity conflicts with existing work\");\n\t\t}\n\t\treturn rowToRecord(row);\n\t}\n\n\tasync claim(input: {\n\t\tcollectionId: string;\n\t\tphase: MediaUsageCollectionDeletionPhase;\n\t\tleaseDurationSeconds: number;\n\t}): Promise<(MediaUsageCollectionDeletionRecord & { leaseToken: string }) | null> {\n\t\tif (!input.collectionId || !isPhase(input.phase)) {\n\t\t\tthrow new Error(\"Collection deletion claim requires an exact identity and phase\");\n\t\t}\n\t\tif (!Number.isSafeInteger(input.leaseDurationSeconds) || input.leaseDurationSeconds < 1) {\n\t\t\tthrow new Error(\"Collection deletion lease duration must be a positive whole number\");\n\t\t}\n\t\tconst leaseToken = ulid();\n\t\tconst row = await this.db\n\t\t\t.updateTable(\"_emdash_media_usage_collection_deletions\")\n\t\t\t.set({\n\t\t\t\tstate: \"leased\",\n\t\t\t\tlease_token: leaseToken,\n\t\t\t\tlease_expires_at: timestampOffset(this.db, input.leaseDurationSeconds),\n\t\t\t\tupdated_at: timestampOffset(this.db, 0),\n\t\t\t})\n\t\t\t.where(\"collection_id\", \"=\", input.collectionId)\n\t\t\t.where(\"phase\", \"=\", input.phase)\n\t\t\t.where((eb) =>\n\t\t\t\teb.or([\n\t\t\t\t\teb.and([\n\t\t\t\t\t\teb(\"state\", \"in\", [\"pending\", \"retry\"]),\n\t\t\t\t\t\ttimestampIsDue(this.db, \"next_attempt_at\"),\n\t\t\t\t\t]),\n\t\t\t\t\teb.and([eb(\"state\", \"=\", \"leased\"), timestampIsDue(this.db, \"lease_expires_at\")]),\n\t\t\t\t]),\n\t\t\t)\n\t\t\t.returningAll()\n\t\t\t.executeTakeFirst();\n\t\tif (!row) return null;\n\t\treturn { ...rowToRecord(row), leaseToken };\n\t}\n\n\tasync findBySlug(collectionSlug: string): Promise<MediaUsageCollectionDeletionRecord | null> {\n\t\tvalidateIdentifier(collectionSlug, \"collection slug\");\n\t\ttry {\n\t\t\tconst row = await this.db\n\t\t\t\t.selectFrom(\"_emdash_media_usage_collection_deletions\")\n\t\t\t\t.selectAll()\n\t\t\t\t.where(\"collection_slug\", \"=\", collectionSlug)\n\t\t\t\t.executeTakeFirst();\n\t\t\treturn row ? rowToRecord(row) : null;\n\t\t} catch (error) {\n\t\t\tif (isMissingTableError(error)) return null;\n\t\t\tthrow error;\n\t\t}\n\t}\n\n\tasync findDue(limit: number): Promise<MediaUsageCollectionDeletionRecord[]> {\n\t\tif (!Number.isSafeInteger(limit) || limit < 1 || limit > 100) {\n\t\t\tthrow new Error(\"Collection deletion candidate limit must be from 1 to 100\");\n\t\t}\n\t\tconst nextAttemptIsDue = timestampIsDue(this.db, \"next_attempt_at\");\n\t\tconst leaseIsDue = timestampIsDue(this.db, \"lease_expires_at\");\n\t\tconst result = await sql<Selectable<MediaUsageCollectionDeletionTable>>`\n\t\t\tWITH pending_candidates AS (\n\t\t\t\tSELECT * FROM _emdash_media_usage_collection_deletions\n\t\t\t\tWHERE state = 'pending' AND ${nextAttemptIsDue}\n\t\t\t\tORDER BY next_attempt_at, updated_at, collection_id\n\t\t\t\tLIMIT ${limit}\n\t\t\t), retry_candidates AS (\n\t\t\t\tSELECT * FROM _emdash_media_usage_collection_deletions\n\t\t\t\tWHERE state = 'retry' AND ${nextAttemptIsDue}\n\t\t\t\tORDER BY next_attempt_at, updated_at, collection_id\n\t\t\t\tLIMIT ${limit}\n\t\t\t), leased_candidates AS (\n\t\t\t\tSELECT * FROM _emdash_media_usage_collection_deletions\n\t\t\t\tWHERE state = 'leased' AND ${leaseIsDue}\n\t\t\t\tORDER BY lease_expires_at, updated_at, collection_id\n\t\t\t\tLIMIT ${limit}\n\t\t\t), candidates AS (\n\t\t\t\tSELECT * FROM pending_candidates\n\t\t\t\tUNION ALL SELECT * FROM retry_candidates\n\t\t\t\tUNION ALL SELECT * FROM leased_candidates\n\t\t\t)\n\t\t\tSELECT * FROM candidates\n\t\t\tORDER BY CASE WHEN state = 'leased' THEN lease_expires_at ELSE next_attempt_at END,\n\t\t\t\tupdated_at,\n\t\t\t\tcollection_id\n\t\t\tLIMIT ${limit}\n\t\t`.execute(this.db);\n\t\treturn result.rows.map(rowToRecord);\n\t}\n\n\tasync findOperatorPage(options: {\n\t\tstate?: MediaUsageCollectionDeletionState;\n\t\tlimit?: number;\n\t\tcursor?: string;\n\t}): Promise<FindManyResult<MediaUsageCollectionDeletionOperatorItem>> {\n\t\tconst state = options.state ?? \"failed\";\n\t\tif (!isState(state)) throw new Error(\"Invalid collection deletion state\");\n\t\tconst limit = options.limit ?? 50;\n\t\tif (!Number.isSafeInteger(limit) || limit < 1 || limit > 100) {\n\t\t\tthrow new Error(\"Collection deletion operator limit must be from 1 to 100\");\n\t\t}\n\t\tconst cursor = options.cursor ? decodeCursor(options.cursor) : null;\n\t\tlet query = this.db\n\t\t\t.selectFrom(\"_emdash_media_usage_collection_deletions\")\n\t\t\t.selectAll()\n\t\t\t.where(\"state\", \"=\", state);\n\t\tif (cursor) {\n\t\t\tquery = query.where((eb) =>\n\t\t\t\teb.or([\n\t\t\t\t\teb(\"updated_at\", \"<\", cursor.orderValue),\n\t\t\t\t\teb.and([eb(\"updated_at\", \"=\", cursor.orderValue), eb(\"collection_id\", \"<\", cursor.id)]),\n\t\t\t\t]),\n\t\t\t);\n\t\t}\n\t\tconst rows = await query\n\t\t\t.orderBy(\"updated_at\", \"desc\")\n\t\t\t.orderBy(\"collection_id\", \"desc\")\n\t\t\t.limit(limit + 1)\n\t\t\t.execute();\n\t\tconst items = rows.slice(0, limit).map(rowToOperatorItem);\n\t\tconst result: FindManyResult<MediaUsageCollectionDeletionOperatorItem> = { items };\n\t\tif (rows.length > limit && items.length > 0) {\n\t\t\tconst last = items.at(-1)!;\n\t\t\tresult.nextCursor = encodeCursor(last.updatedAt, last.collectionId);\n\t\t}\n\t\treturn result;\n\t}\n\n\tasync retryOperatorDeletion(input: {\n\t\tcollectionId: string;\n\t}): Promise<MediaUsageCollectionDeletionRetryResult> {\n\t\tif (!input.collectionId) throw new Error(\"Collection deletion retry requires an ID\");\n\t\tconst observed = await this.db\n\t\t\t.selectFrom(\"_emdash_media_usage_collection_deletions\")\n\t\t\t.selectAll()\n\t\t\t.where(\"collection_id\", \"=\", input.collectionId)\n\t\t\t.executeTakeFirst();\n\t\tif (!observed) return { outcome: \"not_found\" };\n\t\tif (observed.state === \"leased\" && observed.lease_expires_at) {\n\t\t\tconst live = await this.db\n\t\t\t\t.selectFrom(\"_emdash_media_usage_collection_deletions\")\n\t\t\t\t.select(\"lease_expires_at\")\n\t\t\t\t.where(\"collection_id\", \"=\", input.collectionId)\n\t\t\t\t.where(\"state\", \"=\", \"leased\")\n\t\t\t\t.where(liveLease(this.db))\n\t\t\t\t.executeTakeFirst();\n\t\t\tif (live?.lease_expires_at) {\n\t\t\t\treturn { outcome: \"lease_active\", leaseExpiresAt: live.lease_expires_at };\n\t\t\t}\n\t\t}\n\t\tconst now = timestampOffset(this.db, 0);\n\t\tconst reopened = await this.db\n\t\t\t.updateTable(\"_emdash_media_usage_collection_deletions\")\n\t\t\t.set({\n\t\t\t\tstate: \"pending\",\n\t\t\t\tattempt_count: 0,\n\t\t\t\tnext_attempt_at: now,\n\t\t\t\tlease_token: null,\n\t\t\t\tlease_expires_at: null,\n\t\t\t\tlast_error_code: null,\n\t\t\t\tupdated_at: now,\n\t\t\t})\n\t\t\t.where(\"collection_id\", \"=\", input.collectionId)\n\t\t\t.where((eb) =>\n\t\t\t\teb.or([\n\t\t\t\t\teb(\"state\", \"in\", [\"failed\", \"retry\"]),\n\t\t\t\t\teb.and([eb(\"state\", \"=\", \"leased\"), timestampIsDue(this.db, \"lease_expires_at\")]),\n\t\t\t\t]),\n\t\t\t)\n\t\t\t.returningAll()\n\t\t\t.executeTakeFirst();\n\t\tif (reopened) {\n\t\t\treturn { outcome: \"pending\", changed: true, item: rowToOperatorItem(reopened) };\n\t\t}\n\t\treturn { outcome: \"conflict\" };\n\t}\n\n\tasync checkpoint(input: {\n\t\tcollectionId: string;\n\t\tleaseToken: string;\n\t\tfromPhase: MediaUsageCollectionDeletionPhase;\n\t\ttoPhase: MediaUsageCollectionDeletionPhase;\n\t}): Promise<boolean> {\n\t\tconst result = await this.db\n\t\t\t.updateTable(\"_emdash_media_usage_collection_deletions\")\n\t\t\t.set({\n\t\t\t\tphase: input.toPhase,\n\t\t\t\tattempt_count: 0,\n\t\t\t\tlast_error_code: null,\n\t\t\t\tupdated_at: timestampOffset(this.db, 0),\n\t\t\t})\n\t\t\t.where(\"collection_id\", \"=\", input.collectionId)\n\t\t\t.where(\"state\", \"=\", \"leased\")\n\t\t\t.where(\"phase\", \"=\", input.fromPhase)\n\t\t\t.where(\"lease_token\", \"=\", input.leaseToken)\n\t\t\t.where(liveLease(this.db))\n\t\t\t.executeTakeFirst();\n\t\treturn Number(result.numUpdatedRows ?? 0) === 1;\n\t}\n\n\tasync release(input: { collectionId: string; leaseToken: string }): Promise<boolean> {\n\t\tconst now = timestampOffset(this.db, 0);\n\t\tconst result = await this.db\n\t\t\t.updateTable(\"_emdash_media_usage_collection_deletions\")\n\t\t\t.set({\n\t\t\t\tstate: \"pending\",\n\t\t\t\tnext_attempt_at: now,\n\t\t\t\tlease_token: null,\n\t\t\t\tlease_expires_at: null,\n\t\t\t\tattempt_count: 0,\n\t\t\t\tlast_error_code: null,\n\t\t\t\tupdated_at: now,\n\t\t\t})\n\t\t\t.where(\"collection_id\", \"=\", input.collectionId)\n\t\t\t.where(\"state\", \"=\", \"leased\")\n\t\t\t.where(\"lease_token\", \"=\", input.leaseToken)\n\t\t\t.where(liveLease(this.db))\n\t\t\t.executeTakeFirst();\n\t\treturn Number(result.numUpdatedRows ?? 0) === 1;\n\t}\n\n\tasync cancelFence(input: { collectionId: string; leaseToken: string }): Promise<boolean> {\n\t\tconst result = await this.db\n\t\t\t.deleteFrom(\"_emdash_media_usage_collection_deletions\")\n\t\t\t.where(\"collection_id\", \"=\", input.collectionId)\n\t\t\t.where(\"state\", \"=\", \"leased\")\n\t\t\t.where(\"phase\", \"=\", \"fence\")\n\t\t\t.where(\"lease_token\", \"=\", input.leaseToken)\n\t\t\t.where(liveLease(this.db))\n\t\t\t.executeTakeFirst();\n\t\treturn Number(result.numDeletedRows ?? 0) === 1;\n\t}\n\n\tasync recordFailure(input: {\n\t\tcollectionId: string;\n\t\tleaseToken: string;\n\t\terrorCode: string;\n\t\tterminal: boolean;\n\t\tretryDelaySeconds: number;\n\t}): Promise<boolean> {\n\t\tconst result = await this.db\n\t\t\t.updateTable(\"_emdash_media_usage_collection_deletions\")\n\t\t\t.set({\n\t\t\t\tstate: input.terminal ? \"failed\" : \"retry\",\n\t\t\t\tattempt_count: sql<number>`attempt_count + 1`,\n\t\t\t\tnext_attempt_at: timestampOffset(this.db, input.retryDelaySeconds),\n\t\t\t\tlease_token: null,\n\t\t\t\tlease_expires_at: null,\n\t\t\t\tlast_error_code: input.errorCode,\n\t\t\t\tupdated_at: timestampOffset(this.db, 0),\n\t\t\t})\n\t\t\t.where(\"collection_id\", \"=\", input.collectionId)\n\t\t\t.where(\"state\", \"=\", \"leased\")\n\t\t\t.where(\"lease_token\", \"=\", input.leaseToken)\n\t\t\t.where(liveLease(this.db))\n\t\t\t.executeTakeFirst();\n\t\treturn Number(result.numUpdatedRows ?? 0) === 1;\n\t}\n\n\tasync deleteRegistryAndCheckpoint(input: {\n\t\tcollectionId: string;\n\t\tcollectionSlug: string;\n\t\tleaseToken: string;\n\t}): Promise<boolean> {\n\t\treturn withTransaction(this.db, async (trx) => {\n\t\t\tawait trx\n\t\t\t\t.deleteFrom(\"_emdash_collections\")\n\t\t\t\t.where(\"id\", \"=\", input.collectionId)\n\t\t\t\t.where(\"slug\", \"=\", input.collectionSlug)\n\t\t\t\t.where((eb) =>\n\t\t\t\t\teb.exists(\n\t\t\t\t\t\teb\n\t\t\t\t\t\t\t.selectFrom(\"_emdash_media_usage_collection_deletions as deletion\")\n\t\t\t\t\t\t\t.select(\"deletion.collection_id\")\n\t\t\t\t\t\t\t.where(\"deletion.collection_id\", \"=\", input.collectionId)\n\t\t\t\t\t\t\t.where(\"deletion.collection_slug\", \"=\", input.collectionSlug)\n\t\t\t\t\t\t\t.where(\"deletion.state\", \"=\", \"leased\")\n\t\t\t\t\t\t\t.where(\"deletion.phase\", \"=\", \"registry\")\n\t\t\t\t\t\t\t.where(\"deletion.lease_token\", \"=\", input.leaseToken)\n\t\t\t\t\t\t\t.where(liveLease(trx, \"deletion.lease_expires_at\")),\n\t\t\t\t\t),\n\t\t\t\t)\n\t\t\t\t.execute();\n\n\t\t\tconst checkpoint = await trx\n\t\t\t\t.updateTable(\"_emdash_media_usage_collection_deletions\")\n\t\t\t\t.set({ phase: \"table\", updated_at: timestampOffset(trx, 0) })\n\t\t\t\t.where(\"collection_id\", \"=\", input.collectionId)\n\t\t\t\t.where(\"collection_slug\", \"=\", input.collectionSlug)\n\t\t\t\t.where(\"state\", \"=\", \"leased\")\n\t\t\t\t.where(\"phase\", \"=\", \"registry\")\n\t\t\t\t.where(\"lease_token\", \"=\", input.leaseToken)\n\t\t\t\t.where(liveLease(trx))\n\t\t\t\t.executeTakeFirst();\n\t\t\treturn Number(checkpoint.numUpdatedRows ?? 0) === 1;\n\t\t});\n\t}\n}\n\nexport type ActivatedCollectionDeletionOutcome =\n\t| \"inactive\"\n\t| \"not_found\"\n\t| \"in_progress\"\n\t| \"advanced\"\n\t| \"deleted\"\n\t| \"has_content\";\n\nexport async function deleteActivatedMediaUsageCollection(\n\tdb: Kysely<Database>,\n\tinput: {\n\t\tcollectionSlug: string;\n\t\tcollectionId?: string;\n\t\tforceDelete: boolean;\n\t},\n\toptions: {\n\t\tfrontPhaseLimit?: number;\n\t\tclaimed?: MediaUsageCollectionDeletionRecord & { leaseToken: string };\n\t} = {},\n): Promise<ActivatedCollectionDeletionOutcome> {\n\tconst frontPhaseLimit = options.frontPhaseLimit ?? 3;\n\tif (!Number.isSafeInteger(frontPhaseLimit) || frontPhaseLimit < 1 || frontPhaseLimit > 3) {\n\t\tthrow new Error(\"Collection deletion front-phase limit must be from 1 to 3\");\n\t}\n\tvalidateIdentifier(input.collectionSlug, \"collection slug\");\n\tconst repository = new MediaUsageCollectionDeletionRepository(db);\n\tlet deletion = await repository.findBySlug(input.collectionSlug);\n\tif (deletion && input.collectionId && deletion.collectionId !== input.collectionId) {\n\t\tthrow new Error(\"Collection deletion tombstone identity conflict\");\n\t}\n\tif (!deletion) {\n\t\tlet activation: { state: string } | undefined;\n\t\ttry {\n\t\t\tactivation = await db\n\t\t\t\t.selectFrom(\"_emdash_media_usage_activation\")\n\t\t\t\t.select(\"state\")\n\t\t\t\t.where(\"task_key\", \"=\", ACTIVATION_KEY)\n\t\t\t\t.executeTakeFirst();\n\t\t} catch (error) {\n\t\t\tif (!isMissingTableError(error)) throw error;\n\t\t}\n\t\tif (!activation || activation.state === \"expanded\") return \"inactive\";\n\t\tif (activation.state !== \"active\") {\n\t\t\tthrow new Error(\"Media usage activation must be active before collection deletion\");\n\t\t}\n\t\tif (!input.collectionId) return \"not_found\";\n\t\tawait assertActivatedCollectionDeletionReady(db, {\n\t\t\tcollectionId: input.collectionId,\n\t\t\tcollectionSlug: input.collectionSlug,\n\t\t});\n\t\tdeletion = await repository.createTombstone({\n\t\t\tcollectionId: input.collectionId,\n\t\t\tcollectionSlug: input.collectionSlug,\n\t\t\tforceDelete: input.forceDelete,\n\t\t});\n\t}\n\n\tif (deletion.phase !== \"fence\" && deletion.phase !== \"registry\" && deletion.phase !== \"table\") {\n\t\treturn \"deleted\";\n\t}\n\tconst claim =\n\t\toptions.claimed ??\n\t\t(await repository.claim({\n\t\t\tcollectionId: deletion.collectionId,\n\t\t\tphase: deletion.phase,\n\t\t\tleaseDurationSeconds: 5 * 60,\n\t\t}));\n\tif (!claim) return \"in_progress\";\n\tif (claim.collectionId !== deletion.collectionId || claim.phase !== deletion.phase) {\n\t\tthrow new Error(\"Collection deletion claim identity conflict\");\n\t}\n\tlet phase = claim.phase;\n\tlet processedFrontPhases = 0;\n\tconst lease = { collectionId: claim.collectionId, leaseToken: claim.leaseToken };\n\n\tif (phase === \"fence\") {\n\t\tconst captureState = await findCollectionCaptureState(db, claim);\n\t\tif (captureState !== \"active\" && captureState !== \"deleting\") {\n\t\t\tthrow new Error(\"Activated collection deletion requires a fenced capture lifecycle\");\n\t\t}\n\t\tif (!(await verifyMediaUsageCaptureTriggers(db, claim))) {\n\t\t\tthrow new Error(\"Activated collection deletion requires the exact capture trigger set\");\n\t\t}\n\t\tif (captureState === \"active\") {\n\t\t\tconst result = await executeCollectionDeletionGuard(db, {\n\t\t\t\taction: \"fence\",\n\t\t\t\tcollectionId: claim.collectionId,\n\t\t\t\tcollectionSlug: claim.collectionSlug,\n\t\t\t\tleaseToken: claim.leaseToken,\n\t\t\t\tforceDelete: claim.forceDelete,\n\t\t\t});\n\t\t\tif (result.outcome === \"has_content\") {\n\t\t\t\tif (!(await repository.cancelFence(lease))) {\n\t\t\t\t\tthrow new Error(\"Collection deletion lost its fence while preserving content\");\n\t\t\t\t}\n\t\t\t\treturn \"has_content\";\n\t\t\t}\n\t\t\tif (result.outcome !== \"fenced\") throw new Error(\"Collection deletion lost its fence\");\n\t\t}\n\t\tif (\n\t\t\t!(await repository.checkpoint({\n\t\t\t\t...lease,\n\t\t\t\tfromPhase: \"fence\",\n\t\t\t\ttoPhase: \"registry\",\n\t\t\t}))\n\t\t) {\n\t\t\tthrow new Error(\"Collection deletion lost its fence checkpoint\");\n\t\t}\n\t\tphase = \"registry\";\n\t\tprocessedFrontPhases++;\n\t\tif (processedFrontPhases >= frontPhaseLimit) {\n\t\t\tif (!(await repository.release(lease)))\n\t\t\t\tthrow new Error(\"Collection deletion lost its handoff\");\n\t\t\treturn \"advanced\";\n\t\t}\n\t}\n\n\tif (phase === \"registry\") {\n\t\tif (\n\t\t\t!(await repository.deleteRegistryAndCheckpoint({\n\t\t\t\t...lease,\n\t\t\t\tcollectionSlug: claim.collectionSlug,\n\t\t\t}))\n\t\t) {\n\t\t\tthrow new Error(\"Collection deletion lost its registry checkpoint\");\n\t\t}\n\t\tphase = \"table\";\n\t\tprocessedFrontPhases++;\n\t\tif (processedFrontPhases >= frontPhaseLimit) {\n\t\t\tif (!(await repository.release(lease)))\n\t\t\t\tthrow new Error(\"Collection deletion lost its handoff\");\n\t\t\treturn \"advanced\";\n\t\t}\n\t}\n\n\tif (phase === \"table\") {\n\t\tconst result = await executeCollectionDeletionGuard(db, {\n\t\t\taction: \"drop\",\n\t\t\tcollectionId: claim.collectionId,\n\t\t\tcollectionSlug: claim.collectionSlug,\n\t\t\tleaseToken: claim.leaseToken,\n\t\t});\n\t\tif (result.outcome !== \"dropped\") throw new Error(\"Collection deletion lost its table fence\");\n\t\tif (\n\t\t\t!(await repository.checkpoint({\n\t\t\t\t...lease,\n\t\t\t\tfromPhase: \"table\",\n\t\t\t\ttoPhase: \"work\",\n\t\t\t}))\n\t\t) {\n\t\t\tthrow new Error(\"Collection deletion lost its table checkpoint\");\n\t\t}\n\t}\n\n\tif (!(await repository.release(lease))) {\n\t\tthrow new Error(\"Collection deletion lost its cleanup handoff\");\n\t}\n\treturn \"deleted\";\n}\n\nexport async function isMediaUsageCollectionSlugDeleting(\n\tdb: Kysely<Database>,\n\tcollectionSlug: string,\n): Promise<boolean> {\n\tvalidateIdentifier(collectionSlug, \"collection slug\");\n\ttry {\n\t\tconst row = await db\n\t\t\t.selectFrom(\"_emdash_media_usage_collection_deletions\")\n\t\t\t.select(\"collection_id\")\n\t\t\t.where(\"collection_slug\", \"=\", collectionSlug)\n\t\t\t.executeTakeFirst();\n\t\treturn row !== undefined;\n\t} catch (error) {\n\t\tif (isMissingTableError(error)) return false;\n\t\tthrow error;\n\t}\n}\n\nasync function assertActivatedCollectionDeletionReady(\n\tdb: Kysely<Database>,\n\tidentity: { collectionId: string; collectionSlug: string },\n): Promise<void> {\n\tconst captureState = await findCollectionCaptureState(db, identity);\n\tif (captureState !== \"active\") {\n\t\tthrow new Error(\"Activated collection deletion requires an active capture lifecycle\");\n\t}\n\tif (!(await verifyMediaUsageCaptureTriggers(db, identity))) {\n\t\tthrow new Error(\"Activated collection deletion requires the exact capture trigger set\");\n\t}\n}\n\nasync function findCollectionCaptureState(\n\tdb: Kysely<Database>,\n\tidentity: { collectionId: string; collectionSlug: string },\n): Promise<string | null> {\n\tconst lifecycle = await db\n\t\t.selectFrom(\"_emdash_media_usage_index_status\")\n\t\t.select(\"capture_state\")\n\t\t.where(\"adapter_id\", \"=\", \"content-media\")\n\t\t.where(\"scope_type\", \"=\", \"collection\")\n\t\t.where(\"scope_key\", \"=\", identity.collectionSlug)\n\t\t.where(\"collection_id\", \"=\", identity.collectionId)\n\t\t.executeTakeFirst();\n\treturn lifecycle?.capture_state ?? null;\n}\n\nasync function executeCollectionDeletionGuard(\n\tdb: Kysely<Database>,\n\tinput: CollectionDeletionGuardInput,\n): Promise<CollectionDeletionGuardResult> {\n\tconst executeAdapterGuard = await loadAdapterCollectionDeletionGuard();\n\tif (executeAdapterGuard) {\n\t\tconst { default: config } = await import(\"virtual:emdash/config\");\n\t\treturn executeAdapterGuard(config.database?.config, input);\n\t}\n\treturn executeLocalCollectionDeletionGuard(db, input);\n}\n\nasync function loadAdapterCollectionDeletionGuard(): Promise<\n\timport(\"../../db/adapters.js\").ExecuteCollectionDeletionGuard | undefined\n> {\n\ttry {\n\t\tconst dialect = await import(\"virtual:emdash/dialect\");\n\t\treturn dialect.executeCollectionDeletionGuard;\n\t} catch (error) {\n\t\tif (isVirtualDialectUnavailableError(error)) return undefined;\n\t\tthrow error;\n\t}\n}\n\nexport function isVirtualDialectUnavailableError(error: unknown): boolean {\n\tif (!(error instanceof Error) || !(\"code\" in error)) return false;\n\tif (error.code === \"ERR_MODULE_NOT_FOUND\") return error.message.includes(VIRTUAL_DIALECT_ID);\n\treturn (\n\t\terror.code === \"ERR_UNSUPPORTED_ESM_URL_SCHEME\" &&\n\t\terror.message.includes(\"Received protocol 'virtual:'\")\n\t);\n}\n\nexport async function executeLocalCollectionDeletionGuard(\n\tdb: Kysely<Database>,\n\tinput: CollectionDeletionGuardInput,\n): Promise<CollectionDeletionGuardResult> {\n\tassertGuardInput(input);\n\treturn db.transaction().execute(async (trx) => {\n\t\tif (!(await lockLiveTombstone(trx, input))) return { outcome: \"stale\" };\n\t\tif (input.action === \"fence\") return fenceCollection(trx, input);\n\n\t\tconst fts = new FTSManager(trx);\n\t\tawait fts.dropFtsTable(input.collectionSlug);\n\t\tawait sql`DROP TABLE IF EXISTS ${sql.ref(`ec_${input.collectionSlug}`)}`.execute(trx);\n\t\treturn { outcome: \"dropped\" };\n\t});\n}\n\nasync function fenceCollection(\n\ttrx: Transaction<Database>,\n\tinput: Extract<CollectionDeletionGuardInput, { action: \"fence\" }>,\n): Promise<CollectionDeletionGuardResult> {\n\tconst tableName = `ec_${input.collectionSlug}`;\n\tvalidateIdentifier(tableName, \"content table\");\n\tif (isPostgres(trx)) {\n\t\tawait sql`LOCK TABLE ${sql.ref(tableName)} IN SHARE ROW EXCLUSIVE MODE`.execute(trx);\n\t}\n\n\tif (!input.forceDelete) {\n\t\tconst content = await sql<{ present: number }>`\n\t\t\tSELECT 1 AS present FROM ${sql.ref(tableName)}\n\t\t\tWHERE deleted_at IS NULL\n\t\t\tLIMIT 1\n\t\t`.execute(trx);\n\t\tif (content.rows.length > 0) return { outcome: \"has_content\" };\n\t}\n\n\tconst result = await trx\n\t\t.updateTable(\"_emdash_media_usage_index_status as status\")\n\t\t.set({ capture_state: \"deleting\", updated_at: timestampOffset(trx, 0) })\n\t\t.where(\"status.adapter_id\", \"=\", \"content-media\")\n\t\t.where(\"status.scope_type\", \"=\", \"collection\")\n\t\t.where(\"status.scope_key\", \"=\", input.collectionSlug)\n\t\t.where(\"status.collection_id\", \"=\", input.collectionId)\n\t\t.where(\"status.capture_state\", \"=\", \"active\")\n\t\t.where((eb) =>\n\t\t\teb.exists(\n\t\t\t\teb\n\t\t\t\t\t.selectFrom(\"_emdash_collections as collection\")\n\t\t\t\t\t.select(\"collection.id\")\n\t\t\t\t\t.where(\"collection.id\", \"=\", input.collectionId)\n\t\t\t\t\t.where(\"collection.slug\", \"=\", input.collectionSlug),\n\t\t\t),\n\t\t)\n\t\t.executeTakeFirst();\n\treturn Number(result.numUpdatedRows ?? 0) === 1 ? { outcome: \"fenced\" } : { outcome: \"stale\" };\n}\n\nasync function lockLiveTombstone(\n\ttrx: Transaction<Database>,\n\tinput: CollectionDeletionGuardInput,\n): Promise<boolean> {\n\tconst phase = input.action === \"fence\" ? \"fence\" : \"table\";\n\tif (isPostgres(trx)) {\n\t\tconst row = await trx\n\t\t\t.selectFrom(\"_emdash_media_usage_collection_deletions\")\n\t\t\t.select(\"collection_id\")\n\t\t\t.where(\"collection_id\", \"=\", input.collectionId)\n\t\t\t.where(\"collection_slug\", \"=\", input.collectionSlug)\n\t\t\t.where(\"state\", \"=\", \"leased\")\n\t\t\t.where(\"phase\", \"=\", phase)\n\t\t\t.where(\"lease_token\", \"=\", input.leaseToken)\n\t\t\t.where(liveLease(trx))\n\t\t\t.forUpdate()\n\t\t\t.executeTakeFirst();\n\t\treturn row !== undefined;\n\t}\n\n\tconst locked = await trx\n\t\t.updateTable(\"_emdash_media_usage_collection_deletions\")\n\t\t.set({ updated_at: sql<string>`updated_at` })\n\t\t.where(\"collection_id\", \"=\", input.collectionId)\n\t\t.where(\"collection_slug\", \"=\", input.collectionSlug)\n\t\t.where(\"state\", \"=\", \"leased\")\n\t\t.where(\"phase\", \"=\", phase)\n\t\t.where(\"lease_token\", \"=\", input.leaseToken)\n\t\t.where(liveLease(trx))\n\t\t.executeTakeFirst();\n\treturn Number(locked.numUpdatedRows ?? 0) === 1;\n}\n\nfunction assertIdentity(input: { collectionId: string; collectionSlug: string }): void {\n\tif (!input.collectionId) throw new Error(\"Collection deletion requires a collection ID\");\n\tvalidateIdentifier(input.collectionSlug, \"collection slug\");\n}\n\nfunction assertGuardInput(input: CollectionDeletionGuardInput): void {\n\tassertIdentity(input);\n\tif (!input.leaseToken) throw new Error(\"Collection deletion requires a lease token\");\n}\n\nfunction liveLease(db: Kysely<Database>, column = \"lease_expires_at\"): RawBuilder<boolean> {\n\tconst leaseExpiresAt = sql.ref(column);\n\treturn isPostgres(db)\n\t\t? sql<boolean>`${leaseExpiresAt}::timestamptz > clock_timestamp()`\n\t\t: sql<boolean>`${leaseExpiresAt} > strftime('%Y-%m-%dT%H:%M:%fZ', 'now')`;\n}\n\nfunction timestampIsDue(\n\tdb: Kysely<Database>,\n\tcolumn: \"next_attempt_at\" | \"lease_expires_at\",\n): RawBuilder<boolean> {\n\treturn isPostgres(db)\n\t\t? sql<boolean>`${sql.ref(column)} <= to_char(\n\t\t\tstatement_timestamp() AT TIME ZONE 'UTC',\n\t\t\t'YYYY-MM-DD\"T\"HH24:MI:SS.MS\"Z\"'\n\t\t)`\n\t\t: sql<boolean>`${sql.ref(column)} <= strftime('%Y-%m-%dT%H:%M:%fZ', 'now')`;\n}\n\nfunction timestampOffset(db: Kysely<Database>, offsetSeconds: number): RawBuilder<string> {\n\tif (isPostgres(db)) {\n\t\treturn sql<string>`to_char(\n\t\t\t(clock_timestamp() AT TIME ZONE 'UTC') + (${offsetSeconds} * INTERVAL '1 second'),\n\t\t\t'YYYY-MM-DD\"T\"HH24:MI:SS.MS\"Z\"'\n\t\t)`;\n\t}\n\treturn sql<string>`strftime(\n\t\t'%Y-%m-%dT%H:%M:%fZ',\n\t\t'now',\n\t\t${`${offsetSeconds >= 0 ? \"+\" : \"\"}${offsetSeconds} seconds`}\n\t)`;\n}\n\nexport function collectionDeletionCurrentTimestamp(db: Kysely<Database>): RawBuilder<string> {\n\treturn timestampOffset(db, 0);\n}\n\nfunction rowToRecord(\n\trow: Selectable<MediaUsageCollectionDeletionTable>,\n): MediaUsageCollectionDeletionRecord {\n\tif (!isState(row.state) || !isPhase(row.phase)) {\n\t\tthrow new Error(\"Invalid media usage collection deletion lifecycle\");\n\t}\n\treturn {\n\t\tcollectionId: row.collection_id,\n\t\tcollectionSlug: row.collection_slug,\n\t\tforceDelete: Boolean(row.force_delete),\n\t\tstate: row.state,\n\t\tphase: row.phase,\n\t\tworkCursor: row.work_cursor,\n\t\tsourceKey: row.source_key,\n\t\toccurrenceCursor: row.occurrence_cursor,\n\t\tattemptCount: row.attempt_count,\n\t\tnextAttemptAt: row.next_attempt_at,\n\t\tleaseToken: row.lease_token,\n\t\tleaseExpiresAt: row.lease_expires_at,\n\t\tlastErrorCode: row.last_error_code,\n\t\tcreatedAt: row.created_at,\n\t\tupdatedAt: row.updated_at,\n\t};\n}\n\nfunction rowToOperatorItem(\n\trow: Selectable<MediaUsageCollectionDeletionTable>,\n): MediaUsageCollectionDeletionOperatorItem {\n\tconst deletion = rowToRecord(row);\n\treturn {\n\t\tcollectionId: deletion.collectionId,\n\t\tcollectionSlug: deletion.collectionSlug,\n\t\tstate: deletion.state,\n\t\tphase: deletion.phase,\n\t\tattemptCount: deletion.attemptCount,\n\t\tnextAttemptAt: deletion.nextAttemptAt,\n\t\tleaseExpiresAt: deletion.leaseExpiresAt,\n\t\tlastErrorCode: deletion.lastErrorCode,\n\t\tupdatedAt: deletion.updatedAt,\n\t};\n}\n\nfunction isState(value: string): value is MediaUsageCollectionDeletionState {\n\treturn value === \"pending\" || value === \"retry\" || value === \"leased\" || value === \"failed\";\n}\n\nfunction isPhase(value: string): value is MediaUsageCollectionDeletionPhase {\n\treturn (\n\t\tvalue === \"fence\" ||\n\t\tvalue === \"registry\" ||\n\t\tvalue === \"table\" ||\n\t\tvalue === \"work\" ||\n\t\tvalue === \"sources\" ||\n\t\tvalue === \"status\" ||\n\t\tvalue === 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