CREATE TABLE IF NOT EXISTS stores (
    id SERIAL PRIMARY KEY,
    name TEXT NOT NULL UNIQUE,
    enabled BOOLEAN NOT NULL DEFAULT TRUE
);
ALTER TABLE stores ADD COLUMN IF NOT EXISTS address TEXT;
ALTER TABLE stores ADD COLUMN IF NOT EXISTS postal_code TEXT;
ALTER TABLE stores ADD COLUMN IF NOT EXISTS store_code TEXT;
ALTER TABLE stores ADD COLUMN IF NOT EXISTS flyer_page_url TEXT;

CREATE TABLE IF NOT EXISTS household_settings (
    id INTEGER PRIMARY KEY CHECK (id=1),
    household_size INTEGER NOT NULL DEFAULT 4,
    weekly_budget NUMERIC(10,2) NOT NULL DEFAULT 150.00,
    dinners_per_week INTEGER NOT NULL DEFAULT 7,
    currency TEXT NOT NULL DEFAULT 'CAD'
);
INSERT INTO household_settings (id,household_size,weekly_budget,dinners_per_week,currency)
VALUES (1,4,150.00,7,'CAD') ON CONFLICT (id) DO NOTHING;
INSERT INTO stores (name) VALUES ('IGA'),('Metro'),('Costco'),('Maxi'),('Super C'),('Walmart')
ON CONFLICT (name) DO NOTHING;

CREATE TABLE IF NOT EXISTS products (
 id SERIAL PRIMARY KEY, name TEXT NOT NULL, brand TEXT, unit TEXT
);
CREATE TABLE IF NOT EXISTS flyer_offers (
 id SERIAL PRIMARY KEY, store_id INTEGER REFERENCES stores(id) ON DELETE CASCADE,
 product_id INTEGER REFERENCES products(id) ON DELETE SET NULL,
 price NUMERIC(10,2), regular_price NUMERIC(10,2), valid_from DATE, valid_to DATE, source_url TEXT
);
CREATE TABLE IF NOT EXISTS recipes (
 id SERIAL PRIMARY KEY, name TEXT NOT NULL, description TEXT,
 servings INTEGER NOT NULL DEFAULT 4, instructions TEXT, estimated_cost NUMERIC(10,2)
);
CREATE TABLE IF NOT EXISTS recipe_ingredients (
 id SERIAL PRIMARY KEY, recipe_id INTEGER NOT NULL REFERENCES recipes(id) ON DELETE CASCADE,
 product_id INTEGER REFERENCES products(id) ON DELETE SET NULL, ingredient_name TEXT NOT NULL,
 quantity NUMERIC(10,2), unit TEXT
);
CREATE TABLE IF NOT EXISTS meal_plans (
 id SERIAL PRIMARY KEY, week_start DATE NOT NULL UNIQUE, created_at TIMESTAMPTZ NOT NULL DEFAULT NOW()
);
CREATE TABLE IF NOT EXISTS planned_meals (
 id SERIAL PRIMARY KEY, meal_plan_id INTEGER NOT NULL REFERENCES meal_plans(id) ON DELETE CASCADE,
 meal_date DATE NOT NULL, recipe_id INTEGER REFERENCES recipes(id) ON DELETE SET NULL, custom_name TEXT
);
CREATE TABLE IF NOT EXISTS flyer_sources (
 id SERIAL PRIMARY KEY, store_id INTEGER NOT NULL REFERENCES stores(id) ON DELETE CASCADE,
 source_url TEXT NOT NULL, active BOOLEAN NOT NULL DEFAULT TRUE,
 last_checked_at TIMESTAMPTZ, last_success_at TIMESTAMPTZ, last_error TEXT,
 UNIQUE(store_id,source_url)
);
CREATE TABLE IF NOT EXISTS flyers (
 id SERIAL PRIMARY KEY, store_id INTEGER NOT NULL REFERENCES stores(id) ON DELETE CASCADE,
 source_id INTEGER REFERENCES flyer_sources(id) ON DELETE SET NULL,
 title TEXT NOT NULL, source_url TEXT NOT NULL, local_path TEXT NOT NULL,
 checksum TEXT NOT NULL UNIQUE, file_size BIGINT NOT NULL DEFAULT 0,
 page_count INTEGER NOT NULL DEFAULT 0, extracted_text TEXT NOT NULL DEFAULT '',
 extraction_status TEXT NOT NULL DEFAULT 'pending', valid_from DATE, valid_to DATE,
 downloaded_at TIMESTAMPTZ NOT NULL DEFAULT NOW()
);
CREATE TABLE IF NOT EXISTS flyer_import_runs (
 id SERIAL PRIMARY KEY, store_id INTEGER REFERENCES stores(id) ON DELETE SET NULL,
 source_url TEXT NOT NULL, started_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
 finished_at TIMESTAMPTZ, status TEXT NOT NULL DEFAULT 'running', message TEXT
);