-- CreateEnum
CREATE TYPE "HolidayCalendarDayType" AS ENUM ('holiday', 'workday', 'adjusted_workday');

-- AlterTable
ALTER TABLE "employees" ADD COLUMN     "legal_entity_id" UUID;

-- AlterTable
ALTER TABLE "legal_entities" ADD COLUMN     "default_holiday_calendar_id" UUID;

-- CreateTable
CREATE TABLE "holiday_calendars" (
    "id" UUID NOT NULL,
    "code" TEXT NOT NULL,
    "name" TEXT NOT NULL,
    "timezone" VARCHAR(64) NOT NULL DEFAULT 'Asia/Shanghai',
    "legal_entity_id" UUID,
    "enabled" BOOLEAN NOT NULL DEFAULT true,
    "archived_at" TIMESTAMP(3),
    "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
    "created_by" UUID,
    "updated_at" TIMESTAMP(3) NOT NULL,
    "updated_by" UUID,

    CONSTRAINT "holiday_calendars_pkey" PRIMARY KEY ("id")
);

-- CreateTable
CREATE TABLE "holiday_calendar_days" (
    "id" UUID NOT NULL,
    "calendar_id" UUID NOT NULL,
    "date" DATE NOT NULL,
    "day_type" "HolidayCalendarDayType" NOT NULL,
    "name" TEXT NOT NULL,
    "note" TEXT,
    "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
    "created_by" UUID,
    "updated_at" TIMESTAMP(3) NOT NULL,
    "updated_by" UUID,

    CONSTRAINT "holiday_calendar_days_pkey" PRIMARY KEY ("id")
);

-- CreateIndex
CREATE UNIQUE INDEX "holiday_calendars_code_key" ON "holiday_calendars"("code");

-- CreateIndex
CREATE INDEX "idx_holiday_calendars_legal_entity_status" ON "holiday_calendars"("legal_entity_id", "enabled", "archived_at");

-- CreateIndex
CREATE INDEX "idx_holiday_calendar_days_calendar_date" ON "holiday_calendar_days"("calendar_id", "date");

-- CreateIndex
CREATE UNIQUE INDEX "holiday_calendar_day_ux" ON "holiday_calendar_days"("calendar_id", "date");

-- CreateIndex
CREATE INDEX "idx_employees_legal_entity" ON "employees"("legal_entity_id");

-- CreateIndex
CREATE INDEX "idx_legal_entities_default_calendar" ON "legal_entities"("default_holiday_calendar_id");

-- AddForeignKey
ALTER TABLE "employees" ADD CONSTRAINT "employees_legal_entity_id_fkey" FOREIGN KEY ("legal_entity_id") REFERENCES "legal_entities"("id") ON DELETE SET NULL ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE "legal_entities" ADD CONSTRAINT "legal_entities_default_holiday_calendar_id_fkey" FOREIGN KEY ("default_holiday_calendar_id") REFERENCES "holiday_calendars"("id") ON DELETE SET NULL ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE "holiday_calendars" ADD CONSTRAINT "holiday_calendars_legal_entity_id_fkey" FOREIGN KEY ("legal_entity_id") REFERENCES "legal_entities"("id") ON DELETE SET NULL ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE "holiday_calendar_days" ADD CONSTRAINT "holiday_calendar_days_calendar_id_fkey" FOREIGN KEY ("calendar_id") REFERENCES "holiday_calendars"("id") ON DELETE CASCADE ON UPDATE CASCADE;