-- +goose Up
-- +goose StatementBegin
DECLARE
    v_count NUMBER;
BEGIN
    SELECT COUNT(*) INTO v_count FROM user_tables WHERE table_name = 'TB_FLASH_META_PERDA';
    IF v_count = 0 THEN
        EXECUTE IMMEDIATE '
            CREATE TABLE TB_FLASH_META_PERDA (
                ID_META              NUMBER           NOT NULL,
                ID_NODO              NUMBER           NOT NULL,
                DATA_REFERENCIA      DATE             NOT NULL,
                ANO_REFERENCIA       NUMBER(4)        NOT NULL,
                MES_REFERENCIA       NUMBER(2)        NOT NULL,
                DIA_REFERENCIA       NUMBER(2)        NOT NULL,
                PERCENTUAL_META      NUMBER(10,4),
                VALOR_META           NUMBER(18,6),
                OBSERVACAO           VARCHAR2(500),
                DATA_CADASTRO        DATE DEFAULT SYSDATE NOT NULL,
                DATA_ATUALIZACAO     DATE,
                CONSTRAINT PK_TB_FLASH_META_PERDA PRIMARY KEY (ID_META),
                CONSTRAINT FK_TB_FLASH_META_PERDA_NODO FOREIGN KEY (ID_NODO) REFERENCES TB_FLASH_NODO (ID_NODO),
                CONSTRAINT CK_TB_FLASH_META_PERDA_MES CHECK (MES_REFERENCIA BETWEEN 1 AND 12),
                CONSTRAINT CK_TB_FLASH_META_PERDA_DIA CHECK (DIA_REFERENCIA BETWEEN 1 AND 31)
            )';
    END IF;
END;
-- +goose StatementEnd
-- +goose StatementBegin
DECLARE
    v_count NUMBER;
BEGIN
    SELECT COUNT(*) INTO v_count FROM user_constraints WHERE constraint_name = 'UK_TB_FLASH_META_PERDA';
    IF v_count = 0 THEN
        EXECUTE IMMEDIATE 'ALTER TABLE TB_FLASH_META_PERDA ADD CONSTRAINT UK_TB_FLASH_META_PERDA UNIQUE (ID_NODO, DATA_REFERENCIA)';
    END IF;
END;
-- +goose StatementEnd
-- +goose StatementBegin
DECLARE
    v_count NUMBER;
BEGIN
    SELECT COUNT(*) INTO v_count FROM user_indexes WHERE index_name = 'IX_TB_FLASH_META_PERDA_NODO';
    IF v_count = 0 THEN
        EXECUTE IMMEDIATE 'CREATE INDEX IX_TB_FLASH_META_PERDA_NODO ON TB_FLASH_META_PERDA (ID_NODO)';
    END IF;
END;
-- +goose StatementEnd
-- +goose StatementBegin
DECLARE
    v_count NUMBER;
BEGIN
    SELECT COUNT(*) INTO v_count FROM user_indexes WHERE index_name = 'IX_TB_FLASH_META_PERDA_DATA';
    IF v_count = 0 THEN
        EXECUTE IMMEDIATE 'CREATE INDEX IX_TB_FLASH_META_PERDA_DATA ON TB_FLASH_META_PERDA (DATA_REFERENCIA)';
    END IF;
END;
-- +goose StatementEnd
-- +goose StatementBegin
DECLARE
    v_count NUMBER;
BEGIN
    SELECT COUNT(*) INTO v_count FROM user_indexes WHERE index_name = 'IX_TB_FLASH_META_PERDA_AMSD';
    IF v_count = 0 THEN
        EXECUTE IMMEDIATE 'CREATE INDEX IX_TB_FLASH_META_PERDA_AMSD ON TB_FLASH_META_PERDA (ANO_REFERENCIA, MES_REFERENCIA, DIA_REFERENCIA)';
    END IF;
END;
-- +goose StatementEnd

-- +goose Down
-- +goose StatementBegin
DECLARE
    v_count NUMBER;
BEGIN
    SELECT COUNT(*) INTO v_count FROM user_tables WHERE table_name = 'TB_FLASH_META_PERDA';
    IF v_count > 0 THEN
        EXECUTE IMMEDIATE 'DROP TABLE TB_FLASH_META_PERDA CASCADE CONSTRAINTS PURGE';
    END IF;
END;
-- +goose StatementEnd