"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.dbManager = exports.DatabaseManager = void 0;
const better_sqlite3_1 = __importDefault(require("better-sqlite3"));
const path_1 = __importDefault(require("path"));
const fs_extra_1 = __importDefault(require("fs-extra"));
class DatabaseManager {
    db = null;
    dbPath;
    constructor(dbPath) {
        if (dbPath) {
            this.dbPath = dbPath;
        }
        else {
            // Default to user's home directory .claude/threads/threads.db
            const homeDir = process.env.HOME || process.env.USERPROFILE || '.';
            this.dbPath = process.env.THREADS_DB_PATH || path_1.default.join(homeDir, '.claude', 'threads', 'threads.db');
        }
    }
    getDatabase() {
        if (!this.db) {
            this.init();
        }
        return this.db;
    }
    init() {
        if (this.db)
            return;
        // Ensure directory exists
        const dir = path_1.default.dirname(this.dbPath);
        fs_extra_1.default.ensureDirSync(dir);
        this.db = new better_sqlite3_1.default(this.dbPath);
        this.db.pragma('journal_mode = WAL'); // Better concurrency
        this.createTables();
    }
    close() {
        if (this.db) {
            this.db.close();
            this.db = null;
        }
    }
    createTables() {
        if (!this.db)
            return;
        // Threads Table
        this.db.exec(`
      CREATE TABLE IF NOT EXISTS threads (
        id TEXT PRIMARY KEY,
        title TEXT NOT NULL,
        description TEXT,
        created_at INTEGER NOT NULL,
        updated_at INTEGER NOT NULL,
        message_count INTEGER DEFAULT 0,
        is_active INTEGER DEFAULT 0,
        files_changed INTEGER DEFAULT 0,
        lines_added INTEGER DEFAULT 0,
        lines_deleted INTEGER DEFAULT 0,
        tags TEXT
      );
    `);
        this.db.exec(`CREATE INDEX IF NOT EXISTS idx_threads_is_active ON threads(is_active);`);
        this.db.exec(`CREATE INDEX IF NOT EXISTS idx_threads_updated_at ON threads(updated_at DESC);`);
        this.db.exec(`CREATE INDEX IF NOT EXISTS idx_threads_created_at ON threads(created_at DESC);`);
        // Migration: Add session_id if not exists
        try {
            const info = this.db.pragma('table_info(threads)');
            if (!info.some(col => col.name === 'session_id')) {
                this.db.exec(`ALTER TABLE threads ADD COLUMN session_id TEXT`);
                this.db.exec(`UPDATE threads SET session_id = id WHERE session_id IS NULL`);
            }
            if (!info.some(col => col.name === 'git_branch')) {
                this.db.exec(`ALTER TABLE threads ADD COLUMN git_branch TEXT`);
            }
        }
        catch (e) {
            console.error('Error migrating database:', e);
        }
        // Messages Table
        this.db.exec(`
      CREATE TABLE IF NOT EXISTS messages (
        id TEXT PRIMARY KEY,
        thread_id TEXT NOT NULL,
        role TEXT NOT NULL CHECK(role IN ('user', 'assistant', 'system')),
        content TEXT NOT NULL,
        timestamp INTEGER NOT NULL,
        metadata TEXT,
        FOREIGN KEY (thread_id) REFERENCES threads(id) ON DELETE CASCADE
      );
    `);
        this.db.exec(`CREATE INDEX IF NOT EXISTS idx_messages_thread_id ON messages(thread_id);`);
        this.db.exec(`CREATE INDEX IF NOT EXISTS idx_messages_timestamp ON messages(timestamp DESC);`);
        // Migration: Add embedding columns if not exists
        try {
            const info = this.db.pragma('table_info(messages)');
            if (!info.some(col => col.name === 'embedding_blob')) {
                this.db.exec(`ALTER TABLE messages ADD COLUMN embedding_blob BLOB`);
                this.db.exec(`ALTER TABLE messages ADD COLUMN embedding_model TEXT`);
                this.db.exec(`ALTER TABLE messages ADD COLUMN embedding_generated_at INTEGER`);
                this.db.exec(`CREATE INDEX IF NOT EXISTS idx_messages_embedding_exists ON messages(embedding_generated_at) WHERE embedding_blob IS NOT NULL`);
            }
        }
        catch (e) {
            console.error('Error migrating messages table:', e);
        }
        // File Changes Table
        this.db.exec(`
      CREATE TABLE IF NOT EXISTS file_changes (
        id TEXT PRIMARY KEY,
        thread_id TEXT NOT NULL,
        file_path TEXT NOT NULL,
        change_type TEXT NOT NULL CHECK(change_type IN ('added', 'modified', 'deleted')),
        lines_added INTEGER DEFAULT 0,
        lines_deleted INTEGER DEFAULT 0,
        timestamp INTEGER NOT NULL,
        git_commit TEXT,
        FOREIGN KEY (thread_id) REFERENCES threads(id) ON DELETE CASCADE
      );
    `);
        this.db.exec(`CREATE INDEX IF NOT EXISTS idx_file_changes_thread_id ON file_changes(thread_id);`);
        this.db.exec(`CREATE INDEX IF NOT EXISTS idx_file_changes_timestamp ON file_changes(timestamp DESC);`);
        this.db.exec(`CREATE INDEX IF NOT EXISTS idx_file_changes_file_path ON file_changes(file_path);`);
    }
}
exports.DatabaseManager = DatabaseManager;
// Singleton instance for default usage
exports.dbManager = new DatabaseManager();