-- Migration: 002 - Criar tabela de presets de carretel e inserir presets do sistema

CREATE TABLE spool_presets (
    id              UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
    name            TEXT NOT NULL,
    spool_weight_g  INTEGER NOT NULL CHECK (spool_weight_g > 0),
    is_system       BOOLEAN NOT NULL DEFAULT FALSE,
    user_id         UUID REFERENCES users (id) ON DELETE CASCADE,
    created_at      TIMESTAMPTZ NOT NULL DEFAULT NOW(),

    -- Presets do sistema não têm user_id; presets customizados têm
    CONSTRAINT chk_preset_ownership CHECK (
        (is_system = TRUE AND user_id IS NULL) OR
        (is_system = FALSE AND user_id IS NOT NULL)
    )
);

CREATE INDEX idx_spool_presets_user_id  ON spool_presets (user_id) WHERE user_id IS NOT NULL;
CREATE INDEX idx_spool_presets_is_system ON spool_presets (is_system);

-- Presets built-in do sistema (somente leitura para usuários)
INSERT INTO spool_presets (name, spool_weight_g, is_system) VALUES
    ('Bambu Lab (Plástico)',   250, TRUE),
    ('Elegoo (Papelão)',       156, TRUE),
    ('Creality (Plástico)',    230, TRUE),
    ('Prusament (Plástico)',   201, TRUE),
    ('Sunlu (Papelão)',        200, TRUE),
    ('Polymaker (Plástico)',   220, TRUE),
    ('Genérico Papelão 1kg',   200, TRUE),
    ('Genérico Plástico 1kg',  250, TRUE);