/**
 * Settings declared by this domain (see `config/registry.ts`). Declaration order is the
 * settings-panel order; `config/all-settings.ts` registers every domain.
 */
import type { EditMode } from "@oh-my-pi/pi-tui/tools/edit";
import { register } from "../config/registry";

const EMPTY_STRING_RECORD: Record<string, string> = {};

/** `PI_EDIT_FUZZY`: `1`/`true` force fuzzy matching, `0`/`false` disable it; `auto`/other text defers to the setting. */
function parseEditFuzzyEnv(raw: string): boolean | undefined {
	if (raw === "1" || raw === "true") return true;
	if (raw === "0" || raw === "false") return false;
	return undefined;
}

/** Every edit tool variant, as accepted by `edit.mode` and `PI_EDIT_VARIANT`. */
export const EDIT_MODES = [
	"apply_patch",
	"hashline",
	"patch",
	"replace",
	"sloppy",
] as const satisfies readonly EditMode[];

/**
 * `edit.mode` value: an edit tool variant, or `"none"` to unregister the edit tool and force-enable
 * `bash` (see `resolveBuiltinToolPlan` in `tools/index.ts`).
 */
export type EditModeSetting = EditMode | "none";

/** Narrows free text (config values, per-model variants) to an edit mode; `undefined` when unknown. */
export function normalizeEditMode(mode?: string | null): EditMode | undefined {
	return EDIT_MODES.find(candidate => candidate === mode);
}

// ────────────────────────────────────────────────────────────────────────
// Editing
// ────────────────────────────────────────────────────────────────────────

// Edit tool
export const cfgEditMode = register({
	id: "edit.mode",
	type: "enum",
	values: [...EDIT_MODES, "none"] as const satisfies readonly EditModeSetting[],
	default: "hashline",
	// Pins the variant: it also skips the per-model hashline fallback (see `utils/edit-mode.ts`).
	env: "PI_EDIT_VARIANT",
	ui: {
		tab: "files",
		group: "Editing",
		label: "Edit Mode",
		description:
			"Select the edit tool variant (replace, patch, hashline, or apply_patch); none removes the edit tool and keeps bash enabled",
	},
});

/** Per-model edit variant: model-selector substring (case-insensitive) → edit mode. Config-file only. */
export const cfgEditModelVariants = register({
	id: "edit.modelVariants",
	type: "record",
	default: EMPTY_STRING_RECORD,
});

/** {@link cfgEditModelVariants} with lowercased patterns; entries naming an unknown mode are dropped. */
export const editModelVariants = cfgEditModelVariants.map(variants => {
	const entries: { patternLower: string; mode: EditMode }[] = [];
	for (const pattern in variants) {
		const mode = normalizeEditMode(variants[pattern]);
		if (mode) entries.push({ patternLower: pattern.toLowerCase(), mode });
	}
	return entries;
});

export const cfgEditFuzzyMatch = register({
	id: "edit.fuzzyMatch",
	type: "boolean",
	default: true,
	env: { name: "PI_EDIT_FUZZY", parse: parseEditFuzzyEnv },
	ui: {
		tab: "files",
		group: "Editing",
		label: "Fuzzy Match",
		description: "Accept high-confidence fuzzy matches for whitespace differences",
	},
});

export const cfgEditFuzzyThreshold = register({
	id: "edit.fuzzyThreshold",
	type: "number",
	default: 0.95,
	env: {
		name: "PI_EDIT_FUZZY_THRESHOLD",
		parse: raw => {
			const threshold = Number.parseFloat(raw);
			return threshold >= 0 && threshold <= 1 ? threshold : undefined;
		},
	},
	ui: {
		tab: "files",
		group: "Editing",
		label: "Fuzzy Match Threshold",
		description: "Similarity threshold (0-1) for accepting fuzzy matches",
		options: [
			{ value: "0.85", label: "0.85", description: "Lenient" },
			{ value: "0.90", label: "0.90", description: "Moderate" },
			{ value: "0.95", label: "0.95", description: "Default" },
			{ value: "0.98", label: "0.98", description: "Strict" },
		],
	},
});

export const cfgEditStreamingAbort = register({
	id: "edit.streamingAbort",
	type: "boolean",
	default: false,
	ui: {
		tab: "files",
		group: "Editing",
		label: "Abort on Failed Preview",
		description: "Abort streaming edit tool calls when patch preview fails",
	},
});

export const cfgEditRecoverInlineEdits = register({
	id: "edit.recoverInlineEdits",
	type: "boolean",
	default: true,
	ui: {
		tab: "files",
		group: "Editing",
		label: "Recover Inline Edit Payloads",
		description: "Execute edit payloads the model emits as plain text by converting them into edit tool calls",
	},
});

export const cfgEditBlockAutoGenerated = register({
	id: "edit.blockAutoGenerated",
	type: "boolean",
	default: true,
	ui: {
		tab: "files",
		group: "Editing",
		label: "Block Auto-Generated Files",
		description: "Prevent editing of files that appear to be auto-generated (protoc, sqlc, swagger, etc.)",
	},
});

export const cfgEditEnforceSeenLines = register({
	id: "edit.enforceSeenLines",
	type: "boolean",
	default: true,
	ui: {
		tab: "files",
		group: "Editing",
		label: "Enforce Seen-Line Guard",
		description: "Reject edits anchored on lines a prior read/search never displayed in full",
	},
});

export const cfgEditBlackboxEnabled = register({
	id: "edit.blackbox.enabled",
	type: "boolean",
	default: false,
	ui: {
		tab: "files",
		group: "Editing",
		label: "Record Parse Regressions",
		description: "Append full before/after source when an edit introduces an AST parse failure",
	},
});

export const cfgEditAutoRepairEnabled = register({
	id: "edit.autoRepair.enabled",
	type: "boolean",
	default: false,
	ui: {
		tab: "files",
		group: "Editing",
		label: "Auto-Repair Parse Regressions",
		description:
			"When an edit breaks a file's AST parse, ask the smol model to fix the broken region (validated by re-parse; falls back to a warning)",
	},
});