-- Create users table
CREATE TABLE IF NOT EXISTS users (
    id SERIAL PRIMARY KEY,
    username TEXT UNIQUE NOT NULL,
    email TEXT UNIQUE NOT NULL,
    password_hash TEXT NOT NULL,
    first_name TEXT,
    last_name TEXT,
    display_name TEXT UNIQUE NOT NULL,
    is_admin BOOLEAN DEFAULT FALSE,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);

CREATE INDEX IF NOT EXISTS idx_users_username ON users (username);
CREATE INDEX IF NOT EXISTS idx_users_email ON users (email);

-- Create recipes table
CREATE TABLE IF NOT EXISTS recipes (
    id SERIAL PRIMARY KEY,
    name TEXT NOT NULL,
    meal_type TEXT NOT NULL,               -- breakfast / lunch / dinner / snack
    time_minutes INTEGER NOT NULL,
    tags TEXT[] NOT NULL DEFAULT '{}',     -- {"מהיר", "בריא"}
    ingredients TEXT[] NOT NULL DEFAULT '{}', -- {"ביצה", "עגבניה", "מלח"}
    steps TEXT[] NOT NULL DEFAULT '{}',    -- {"לחתוך", "לבשל", ...}
    image TEXT,                            -- Base64-encoded image or image URL
    made_by TEXT,                          -- Person who created this recipe version
    user_id INTEGER REFERENCES users(id) ON DELETE SET NULL,  -- Recipe owner
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);

-- Optional: index for filters
CREATE INDEX IF NOT EXISTS idx_recipes_meal_type
    ON recipes (meal_type);

CREATE INDEX IF NOT EXISTS idx_recipes_time_minutes
    ON recipes (time_minutes);

CREATE INDEX IF NOT EXISTS idx_recipes_made_by
    ON recipes (made_by);

CREATE INDEX IF NOT EXISTS idx_recipes_user_id
    ON recipes (user_id);

-- Create grocery lists table
CREATE TABLE IF NOT EXISTS grocery_lists (
    id SERIAL PRIMARY KEY,
    name TEXT NOT NULL,
    items TEXT[] NOT NULL DEFAULT '{}',     -- Array of grocery items
    owner_id INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
    is_pinned BOOLEAN DEFAULT FALSE,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);

-- Create grocery list shares table
CREATE TABLE IF NOT EXISTS grocery_list_shares (
    id SERIAL PRIMARY KEY,
    list_id INTEGER NOT NULL REFERENCES grocery_lists(id) ON DELETE CASCADE,
    shared_with_user_id INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
    can_edit BOOLEAN DEFAULT FALSE,
    shared_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    UNIQUE(list_id, shared_with_user_id)
);

CREATE INDEX IF NOT EXISTS idx_grocery_lists_owner_id ON grocery_lists (owner_id);
CREATE INDEX IF NOT EXISTS idx_grocery_list_shares_list_id ON grocery_list_shares (list_id);
CREATE INDEX IF NOT EXISTS idx_grocery_list_shares_user_id ON grocery_list_shares (shared_with_user_id);

-- Create notifications table
CREATE TABLE IF NOT EXISTS notifications (
    id SERIAL PRIMARY KEY,
    user_id INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
    type TEXT NOT NULL,  -- 'grocery_share', etc.
    message TEXT NOT NULL,
    related_id INTEGER,  -- Related entity ID (e.g., list_id)
    is_read BOOLEAN DEFAULT FALSE,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);

CREATE INDEX IF NOT EXISTS idx_notifications_user_id ON notifications (user_id);
CREATE INDEX IF NOT EXISTS idx_notifications_is_read ON notifications (is_read);

-- Create default admin user (password: admin123)
-- Password hash generated with bcrypt for 'admin123'
INSERT INTO users (username, email, password_hash, first_name, last_name, display_name, is_admin)
VALUES ('admin', 'admin@myrecipes.local', '$2b$12$LQv3c1yqBWVHxkd0LHAkCOYz6TtxMQJqhN8/LewY5lE7UGf3rCvHC', 'Admin', 'User', 'מנהל', TRUE)
ON CONFLICT (username) DO NOTHING;