-- +goose Up
CREATE TYPE recipe_source     AS ENUM ('spoonacular', 'ai', 'user');
CREATE TYPE recipe_difficulty AS ENUM ('easy', 'medium', 'hard');

CREATE TABLE recipes (
    id             UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
    source         recipe_source NOT NULL DEFAULT 'spoonacular',
    spoonacular_id INTEGER UNIQUE,

    title          VARCHAR(500) NOT NULL,
    description    TEXT,
    title_ru       VARCHAR(500),
    description_ru TEXT,

    cuisine        VARCHAR(100),
    difficulty     recipe_difficulty,
    prep_time_min  INTEGER,
    cook_time_min  INTEGER,
    servings       SMALLINT,
    image_url      TEXT,

    calories_per_serving DECIMAL(8, 2),
    protein_per_serving  DECIMAL(8, 2),
    fat_per_serving      DECIMAL(8, 2),
    carbs_per_serving    DECIMAL(8, 2),
    fiber_per_serving    DECIMAL(8, 2),

    ingredients JSONB NOT NULL DEFAULT '[]'::jsonb,
    steps       JSONB NOT NULL DEFAULT '[]'::jsonb,
    tags        JSONB NOT NULL DEFAULT '[]'::jsonb,

    avg_rating   DECIMAL(3, 2) NOT NULL DEFAULT 0.0,
    review_count INTEGER NOT NULL DEFAULT 0,

    created_by UUID REFERENCES users (id) ON DELETE SET NULL,

    created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
    updated_at TIMESTAMPTZ NOT NULL DEFAULT now()
);

CREATE INDEX idx_recipes_title_fts ON recipes
    USING GIN (to_tsvector('simple',
        coalesce(title_ru, '') || ' ' || coalesce(title, '')));

CREATE INDEX idx_recipes_ingredients ON recipes USING GIN (ingredients);
CREATE INDEX idx_recipes_tags        ON recipes USING GIN (tags);

CREATE INDEX idx_recipes_cuisine    ON recipes (cuisine);
CREATE INDEX idx_recipes_difficulty ON recipes (difficulty);
CREATE INDEX idx_recipes_prep_time  ON recipes (prep_time_min);
CREATE INDEX idx_recipes_calories   ON recipes (calories_per_serving);
CREATE INDEX idx_recipes_source     ON recipes (source);
CREATE INDEX idx_recipes_rating     ON recipes (avg_rating DESC);

-- +goose Down
DROP TABLE IF EXISTS recipes;
DROP TYPE IF EXISTS recipe_difficulty;
DROP TYPE IF EXISTS recipe_source;