/**
 * rTasks Automerge document schemas.
 *
 * Granularity: one Automerge document per board/workspace.
 * DocId format: {space}:tasks:boards:{boardId}
 */

import type { DocSchema } from '../../shared/local-first/document';

// ── Document types ──

export interface ClickUpTaskMeta {
	taskId: string;        // ClickUp task ID
	listId: string;        // ClickUp list ID
	url: string;           // Direct link to ClickUp task
	lastSyncedAt: number;
	syncStatus: 'synced' | 'pending-push' | 'conflict' | 'push-failed';
	contentHash: string;   // SHA of title+desc+status+priority at last sync
	remoteHash?: string;   // ClickUp state hash at last pull
}

export interface TaskItem {
	id: string;
	spaceId: string;
	title: string;
	description: string;
	status: string;
	priority: string | null;
	labels: string[];
	assigneeId: string | null;
	createdBy: string | null;
	sortOrder: number;
	createdAt: number;
	updatedAt: number;
	clickup?: ClickUpTaskMeta;
}

export interface ClickUpBoardMeta {
	listId: string;        // ClickUp list this board mirrors
	listName: string;
	workspaceId: string;   // ClickUp team ID
	webhookId?: string;    // For teardown on disconnect
	syncEnabled: boolean;
	statusMap: Record<string, string>;        // rTasks → ClickUp
	reverseStatusMap: Record<string, string>; // ClickUp → rTasks
}

export interface BoardMeta {
	id: string;
	name: string;
	slug: string;
	description: string;
	icon: string | null;
	ownerDid: string | null;
	statuses: string[];
	labels: string[];
	createdAt: number;
	updatedAt: number;
	clickup?: ClickUpBoardMeta;
}

export interface BoardDoc {
	meta: {
		module: string;
		collection: string;
		version: number;
		spaceSlug: string;
		createdAt: number;
	};
	board: BoardMeta;
	tasks: Record<string, TaskItem>;
}

// ── Schema registration ──

export const boardSchema: DocSchema<BoardDoc> = {
	module: 'tasks',
	collection: 'boards',
	version: 1,
	init: (): BoardDoc => ({
		meta: {
			module: 'tasks',
			collection: 'boards',
			version: 1,
			spaceSlug: '',
			createdAt: Date.now(),
		},
		board: {
			id: '',
			name: 'Untitled Board',
			slug: '',
			description: '',
			icon: null,
			ownerDid: null,
			statuses: ['TODO', 'IN_PROGRESS', 'DONE'],
			labels: [],
			createdAt: Date.now(),
			updatedAt: Date.now(),
		},
		tasks: {},
	}),
};

// ── Helpers ──

export function boardDocId(space: string, boardId: string) {
	return `${space}:tasks:boards:${boardId}` as const;
}

// ── ClickUp connection doc (one per space) ──

export interface ClickUpConnectionDoc {
	meta: {
		module: string;
		collection: string;
		version: number;
		spaceSlug: string;
		createdAt: number;
	};
	clickup?: {
		accessToken: string;     // OAuth token or personal API token
		teamId: string;
		teamName: string;
		connectedAt: number;
		webhookSecret: string;   // HMAC secret for webhook validation
	};
}

export const clickupConnectionSchema: DocSchema<ClickUpConnectionDoc> = {
	module: 'tasks',
	collection: 'clickup-connection',
	version: 1,
	init: (): ClickUpConnectionDoc => ({
		meta: {
			module: 'tasks',
			collection: 'clickup-connection',
			version: 1,
			spaceSlug: '',
			createdAt: Date.now(),
		},
	}),
};

export function clickupConnectionDocId(space: string) {
	return `${space}:tasks:clickup-connection` as const;
}

export function createTaskItem(
	id: string,
	spaceId: string,
	title: string,
	opts: Partial<TaskItem> = {},
): TaskItem {
	const now = Date.now();
	return {
		id,
		spaceId,
		title,
		description: '',
		status: 'TODO',
		priority: null,
		labels: [],
		assigneeId: null,
		createdBy: null,
		sortOrder: 0,
		createdAt: now,
		updatedAt: now,
		...opts,
	};
}