import Database from 'better-sqlite3';
import { dirname, join } from 'path';
import { fileURLToPath } from 'url';
const __dirname = dirname(fileURLToPath(import.meta.url));
const DB_FILE = process.env.DB_PATH || join(__dirname, 'recipes.db');
const db = new Database(DB_FILE);
db.pragma('journal_mode = WAL');
function now() {
    return new Date().toISOString().replace('T', ' ').slice(0, 19);
}
export function getDb() {
    return db;
}
export function getAllRecipes(search, category, userId) {
    let query = 'SELECT * FROM recipes WHERE 1=1';
    const params = [];
    if (search) {
        query += ' AND (LOWER(name) LIKE ? OR LOWER(description) LIKE ? OR LOWER(ingredients) LIKE ?)';
        const term = `%${search.toLowerCase()}%`;
        params.push(term, term, term);
    }
    if (category && category !== 'Alle') {
        query += ' AND category = ?';
        params.push(category);
    }
    if (userId) {
        query += ' AND user_id = ?';
        params.push(Number(userId));
    }
    query += ' ORDER BY created_at DESC';
    return db.prepare(query).all(...params);
}
export function getRecipeById(id) {
    return db.prepare('SELECT * FROM recipes WHERE id = ?').get(Number(id));
}
export function createRecipe(recipe) {
    const nowStr = now();
    const stmt = db.prepare(`
    INSERT INTO recipes (
      name, description, ingredients, steps, category,
      source, source_url, source_author, tiktok_url, tiktok_author,
      thumbnail_url, user_id, created_at, updated_at
    ) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
  `);
    const info = stmt.run(recipe.name, recipe.description || '', typeof recipe.ingredients === 'string' ? recipe.ingredients : JSON.stringify(recipe.ingredients || []), typeof recipe.steps === 'string' ? recipe.steps : JSON.stringify(recipe.steps || []), recipe.category || 'Sonstiges', recipe.source || 'tiktok', recipe.source_url || recipe.tiktok_url || null, recipe.source_author || recipe.tiktok_author || null, recipe.tiktok_url || recipe.source_url || null, recipe.tiktok_author || recipe.source_author || null, recipe.thumbnail_url || null, recipe.user_id || null, nowStr, nowStr);
    return getRecipeById(info.lastInsertRowid);
}
export function updateRecipe(id, recipe) {
    const existing = getRecipeById(id);
    if (!existing)
        return undefined;
    const nowStr = now();
    const stmt = db.prepare(`
    UPDATE recipes SET
      name = ?, description = ?, ingredients = ?, steps = ?, category = ?,
      source = ?, source_url = ?, source_author = ?, tiktok_url = ?, tiktok_author = ?,
      thumbnail_url = ?, updated_at = ?
    WHERE id = ?
  `);
    stmt.run(recipe.name !== undefined ? recipe.name : existing.name, recipe.description !== undefined ? recipe.description : existing.description, recipe.ingredients !== undefined ? (typeof recipe.ingredients === 'string' ? recipe.ingredients : JSON.stringify(recipe.ingredients)) : existing.ingredients, recipe.steps !== undefined ? (typeof recipe.steps === 'string' ? recipe.steps : JSON.stringify(recipe.steps)) : existing.steps, recipe.category || existing.category, recipe.source || existing.source, recipe.source_url || recipe.tiktok_url || existing.source_url, recipe.source_author || recipe.tiktok_author || existing.source_author, recipe.tiktok_url || recipe.source_url || existing.tiktok_url, recipe.tiktok_author || recipe.source_author || existing.tiktok_author, recipe.thumbnail_url !== undefined ? recipe.thumbnail_url : existing.thumbnail_url, nowStr, Number(id));
    return getRecipeById(id);
}
export function deleteRecipe(id) {
    db.prepare('DELETE FROM recipes WHERE id = ?').run(Number(id));
}
export function getCategories() {
    return db.prepare(`
    SELECT category, COUNT(*) as count
    FROM recipes
    GROUP BY category
    ORDER BY count DESC
  `).all();
}
export function getUserByUsername(username) {
    return db.prepare('SELECT * FROM users WHERE username = ?').get(username);
}
export function getUserById(id) {
    return db.prepare('SELECT * FROM users WHERE id = ?').get(Number(id));
}
export function createUser(username, hashedPassword, isAdmin = false) {
    const nowStr = now();
    const stmt = db.prepare('INSERT INTO users (username, password, is_admin, created_at) VALUES (?, ?, ?, ?)');
    const info = stmt.run(username, hashedPassword, isAdmin ? 1 : 0, nowStr);
    return { id: info.lastInsertRowid, username, is_admin: isAdmin ? 1 : 0, created_at: nowStr };
}
export function updateUserCredentials(userId, { username, password }) {
    const user = getUserById(userId);
    if (!user)
        return null;
    let query = 'UPDATE users SET ';
    const params = [];
    const updates = [];
    if (username) {
        updates.push('username = ?');
        params.push(username);
    }
    if (password) {
        updates.push('password = ?');
        params.push(password);
    }
    if (updates.length === 0)
        return { id: user.id, username: user.username, is_admin: user.is_admin, created_at: user.created_at };
    query += updates.join(', ') + ' WHERE id = ?';
    params.push(Number(userId));
    db.prepare(query).run(...params);
    return getUserById(userId) || null;
}
export function createInviteToken(token, createdBy) {
    const nowStr = now();
    db.prepare('INSERT INTO invite_tokens (token, created_by, created_at) VALUES (?, ?, ?)').run(token, Number(createdBy), nowStr);
}
export function getInviteToken(token) {
    return db.prepare('SELECT * FROM invite_tokens WHERE token = ?').get(token);
}
export function useInviteToken(token, userId) {
    const nowStr = now();
    db.prepare('UPDATE invite_tokens SET used_by = ?, used_at = ? WHERE token = ?').run(Number(userId), nowStr, token);
}
export function getInvitesByUser(userId) {
    return db.prepare(`
    SELECT i.*, u.username as used_by_username
    FROM invite_tokens i
    LEFT JOIN users u ON i.used_by = u.id
    WHERE i.created_by = ?
    ORDER BY i.created_at DESC
  `).all(Number(userId));
}
export function getAllUsers() {
    return db.prepare('SELECT id, username, is_admin, created_at FROM users ORDER BY created_at DESC').all();
}
export function deleteUser(id) {
    const userId = Number(id);
    const user = getUserById(userId);
    if (!user)
        return false;
    const deleteTrans = db.transaction(() => {
        db.prepare('DELETE FROM users WHERE id = ?').run(userId);
        db.prepare('DELETE FROM invite_tokens WHERE created_by = ?').run(userId);
    });
    deleteTrans();
    return true;
}
export function getInviteStats() {
    const total = db.prepare('SELECT COUNT(*) as count FROM invite_tokens').get().count;
    const used = db.prepare('SELECT COUNT(*) as count FROM invite_tokens WHERE used_by IS NOT NULL').get().count;
    return { total, used, available: total - used };
}