{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "$id": "gno://schemas/peek@1.0",
  "title": "GNO Peek Snapshot",
  "description": "Cheap read-only metadata snapshot for external integrations",
  "type": "object",
  "additionalProperties": false,
  "required": [
    "schemaVersion",
    "gnoVersion",
    "generatedAt",
    "initialized",
    "indexName",
    "counts",
    "backlog",
    "lastIndexedAt",
    "recent",
    "serve"
  ],
  "properties": {
    "schemaVersion": {
      "const": "peek@1.0",
      "description": "Peek snapshot schema version"
    },
    "gnoVersion": {
      "type": "string",
      "minLength": 1,
      "description": "GNO package version that produced the snapshot"
    },
    "generatedAt": {
      "type": "string",
      "format": "date-time",
      "description": "RFC 3339 UTC timestamp when the snapshot was built"
    },
    "initialized": {
      "type": "boolean",
      "description": "Whether a GNO config exists for this invocation"
    },
    "indexName": {
      "type": "string",
      "minLength": 1,
      "description": "Index name for this snapshot"
    },
    "counts": {
      "description": "Active document and collection counts, or null when uninitialized",
      "anyOf": [
        {
          "type": "object",
          "additionalProperties": false,
          "required": ["documents", "collections"],
          "properties": {
            "documents": {
              "type": "integer",
              "minimum": 0,
              "description": "Active documents"
            },
            "collections": {
              "type": "integer",
              "minimum": 0,
              "description": "Configured collections"
            }
          }
        },
        { "type": "null" }
      ]
    },
    "backlog": {
      "description": "Embedding pending count and recent ingest failures, or null when uninitialized",
      "anyOf": [
        {
          "type": "object",
          "additionalProperties": false,
          "required": ["pending", "failed"],
          "properties": {
            "pending": {
              "type": "integer",
              "minimum": 0,
              "description": "Chunks awaiting embedding (status.embeddingBacklog)"
            },
            "failed": {
              "type": "integer",
              "minimum": 0,
              "description": "Recent ingest/index errors (recentErrors)"
            }
          }
        },
        { "type": "null" }
      ]
    },
    "lastIndexedAt": {
      "type": ["string", "null"],
      "format": "date-time",
      "description": "Last index update time, or null when uninitialized or never indexed"
    },
    "recent": {
      "type": "array",
      "maxItems": 10,
      "description": "Most recently modified active documents, newest first",
      "items": {
        "type": "object",
        "additionalProperties": false,
        "required": [
          "docid",
          "uri",
          "title",
          "collection",
          "absPath",
          "modifiedAt"
        ],
        "properties": {
          "docid": {
            "type": "string",
            "description": "Store document id as-is (leading # plus hex)",
            "pattern": "^#[a-f0-9]{6,8}$"
          },
          "uri": {
            "type": "string",
            "description": "Virtual URI (gno://collection/path)",
            "pattern": "^gno://[^/]+/.+"
          },
          "title": {
            "type": ["string", "null"],
            "description": "Extracted title; null when absent"
          },
          "collection": {
            "type": "string",
            "minLength": 1
          },
          "absPath": {
            "type": "string",
            "minLength": 1,
            "description": "Absolute source path (collection root + relative path)"
          },
          "modifiedAt": {
            "type": "string",
            "format": "date-time"
          }
        }
      }
    },
    "serve": {
      "type": "object",
      "additionalProperties": false,
      "required": ["running", "url"],
      "properties": {
        "running": {
          "type": "boolean",
          "description": "Pid-file liveness for gno serve"
        },
        "url": {
          "type": ["string", "null"],
          "description": "http://localhost:<port> when live with a recorded port"
        }
      },
      "allOf": [
        {
          "if": {
            "properties": { "running": { "const": true } },
            "required": ["running"]
          },
          "then": {
            "properties": {
              "url": {
                "type": "string",
                "pattern": "^http://localhost:[1-9][0-9]{0,4}$"
              }
            }
          }
        },
        {
          "if": {
            "properties": { "running": { "const": false } },
            "required": ["running"]
          },
          "then": {
            "properties": { "url": { "type": "null" } }
          }
        }
      ]
    }
  },
  "allOf": [
    {
      "description": "uninitialized snapshots pin counts/backlog/lastIndexedAt to null and recent to []",
      "if": {
        "properties": { "initialized": { "const": false } },
        "required": ["initialized"]
      },
      "then": {
        "properties": {
          "counts": { "type": "null" },
          "backlog": { "type": "null" },
          "lastIndexedAt": { "type": "null" },
          "recent": { "type": "array", "maxItems": 0 }
        }
      }
    },
    {
      "description": "initialized snapshots require populated counts and backlog objects",
      "if": {
        "properties": { "initialized": { "const": true } },
        "required": ["initialized"]
      },
      "then": {
        "properties": {
          "counts": { "type": "object" },
          "backlog": { "type": "object" }
        }
      }
    }
  ]
}