-- ---------------------------------------------------------
-- TRACKSTEEL ERP: TABELA DE REVISÕES DE PEÇAS POR OF
-- ---------------------------------------------------------

CREATE TABLE IF NOT EXISTS public.revisoes (
    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
    of_number TEXT NOT NULL,
    peca_id UUID NOT NULL REFERENCES public.pecas(id) ON DELETE CASCADE,
    numero_revisao TEXT NOT NULL,
    tipo_revisao TEXT NOT NULL CHECK (tipo_revisao IN ('simples', 'critica')),
    descricao_motivo TEXT,
    observacoes TEXT,
    usuario_id TEXT,
    usuario_nome TEXT,
    usuario_email TEXT,
    data_revisao TIMESTAMPTZ NOT NULL DEFAULT now(),
    dados_anteriores JSONB NOT NULL DEFAULT '{}'::jsonb,
    dados_novos JSONB NOT NULL DEFAULT '{}'::jsonb,
    campos_alterados TEXT[] NOT NULL DEFAULT '{}',
    afeta_apontamentos BOOLEAN NOT NULL DEFAULT false,
    impacto_processos JSONB DEFAULT '{}'::jsonb,
    created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
    updated_at TIMESTAMPTZ NOT NULL DEFAULT now()
);

-- Índices
CREATE INDEX IF NOT EXISTS idx_revisoes_of_number ON public.revisoes(of_number);
CREATE INDEX IF NOT EXISTS idx_revisoes_peca_id ON public.revisoes(peca_id);
CREATE INDEX IF NOT EXISTS idx_revisoes_data ON public.revisoes(data_revisao DESC);
CREATE INDEX IF NOT EXISTS idx_revisoes_tipo ON public.revisoes(tipo_revisao);

-- Colunas auxiliares na tabela pecas
ALTER TABLE public.pecas 
    ADD COLUMN IF NOT EXISTS revisao_atual TEXT DEFAULT 'Rev 00',
    ADD COLUMN IF NOT EXISTS tem_revisao BOOLEAN DEFAULT false,
    ADD COLUMN IF NOT EXISTS qtd_revisoes INTEGER DEFAULT 0;

-- Trigger para sincronizar campos de revisão na tabela pecas
CREATE OR REPLACE FUNCTION public.fn_sync_peca_revisoes()
RETURNS TRIGGER AS $$
DECLARE
    v_peca_id UUID;
    v_count INTEGER;
    v_last_rev TEXT;
BEGIN
    IF TG_OP = 'DELETE' THEN
        v_peca_id := OLD.peca_id;
    ELSE
        v_peca_id := NEW.peca_id;
    END IF;

    SELECT count(*), COALESCE((SELECT numero_revisao FROM public.revisoes WHERE peca_id = v_peca_id ORDER BY data_revisao DESC, created_at DESC LIMIT 1), 'Rev 00')
    INTO v_count, v_last_rev
    FROM public.revisoes
    WHERE peca_id = v_peca_id;

    UPDATE public.pecas
    SET tem_revisao = (v_count > 0),
        qtd_revisoes = v_count,
        revisao_atual = v_last_rev,
        updated_at = now()
    WHERE id = v_peca_id;

    RETURN NULL;
END;
$$ LANGUAGE plpgsql;

DROP TRIGGER IF EXISTS trg_sync_peca_revisoes ON public.revisoes;
CREATE TRIGGER trg_sync_peca_revisoes
AFTER INSERT OR UPDATE OR DELETE ON public.revisoes
FOR EACH ROW EXECUTE FUNCTION public.fn_sync_peca_revisoes();

-- Políticas RLS
ALTER TABLE public.revisoes ENABLE ROW LEVEL SECURITY;

DROP POLICY IF EXISTS "revisoes_select_policy" ON public.revisoes;
CREATE POLICY "revisoes_select_policy" ON public.revisoes FOR SELECT USING (true);

DROP POLICY IF EXISTS "revisoes_insert_policy" ON public.revisoes;
CREATE POLICY "revisoes_insert_policy" ON public.revisoes FOR INSERT WITH CHECK (true);

DROP POLICY IF EXISTS "revisoes_update_policy" ON public.revisoes;
CREATE POLICY "revisoes_update_policy" ON public.revisoes FOR UPDATE USING (true) WITH CHECK (true);

DROP POLICY IF EXISTS "revisoes_delete_policy" ON public.revisoes;
CREATE POLICY "revisoes_delete_policy" ON public.revisoes FOR DELETE USING (true);

GRANT ALL ON TABLE public.revisoes TO postgres, anon, authenticated, service_role;