CREATE TYPE "AttendanceCorrectionKind" AS ENUM ('missed_punch', 'out', 'overtime');

CREATE TYPE "AttendanceCorrectionStatus" AS ENUM ('reviewing', 'approved', 'rejected', 'cancelled');

CREATE TABLE "wecom_checkin_sync_runs" (
  "id" UUID NOT NULL,
  "start_date" DATE NOT NULL,
  "end_date" DATE NOT NULL,
  "status" VARCHAR(24) NOT NULL DEFAULT 'running',
  "employee_count" INTEGER NOT NULL DEFAULT 0,
  "record_count" INTEGER NOT NULL DEFAULT 0,
  "error_code" VARCHAR(80),
  "error_message" TEXT,
  "triggered_by" UUID,
  "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
  "updated_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
  CONSTRAINT "wecom_checkin_sync_runs_pkey" PRIMARY KEY ("id")
);

CREATE TABLE "wecom_checkin_records" (
  "id" UUID NOT NULL,
  "sync_run_id" UUID NOT NULL,
  "employee_id" UUID NOT NULL,
  "external_user_id" VARCHAR(128) NOT NULL,
  "checkin_time" TIMESTAMP(3) NOT NULL,
  "checkin_date" DATE NOT NULL,
  "checkin_type" VARCHAR(40) NOT NULL,
  "exception_type" VARCHAR(80),
  "source_type" VARCHAR(40),
  "result" VARCHAR(80),
  "raw_hash" VARCHAR(64) NOT NULL,
  "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
  "updated_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
  CONSTRAINT "wecom_checkin_records_pkey" PRIMARY KEY ("id")
);

CREATE TABLE "attendance_corrections" (
  "id" UUID NOT NULL,
  "owner_id" UUID NOT NULL,
  "department_id" UUID,
  "kind" "AttendanceCorrectionKind" NOT NULL,
  "status" "AttendanceCorrectionStatus" NOT NULL DEFAULT 'reviewing',
  "work_date" DATE NOT NULL,
  "start_at" TIMESTAMP(3),
  "end_at" TIMESTAMP(3),
  "missed_punch_at" TIMESTAMP(3),
  "reason" TEXT NOT NULL,
  "location_summary" TEXT,
  "compensation_policy" TEXT,
  "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
  "created_by" UUID,
  "updated_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
  "updated_by" UUID,
  CONSTRAINT "attendance_corrections_pkey" PRIMARY KEY ("id")
);

ALTER TABLE "workflow_instances"
ADD COLUMN "attendance_correction_id" UUID;

CREATE UNIQUE INDEX "wecom_checkin_records_user_time_type_ux"
ON "wecom_checkin_records"("external_user_id", "checkin_time", "checkin_type");

CREATE INDEX "idx_wecom_checkin_sync_runs_status_created"
ON "wecom_checkin_sync_runs"("status", "created_at");

CREATE INDEX "idx_wecom_checkin_sync_runs_range"
ON "wecom_checkin_sync_runs"("start_date", "end_date");

CREATE INDEX "idx_wecom_checkin_sync_runs_triggered_by"
ON "wecom_checkin_sync_runs"("triggered_by");

CREATE INDEX "idx_wecom_checkin_records_employee_date"
ON "wecom_checkin_records"("employee_id", "checkin_date");

CREATE INDEX "idx_wecom_checkin_records_sync_run"
ON "wecom_checkin_records"("sync_run_id");

CREATE INDEX "idx_attendance_corrections_owner_date"
ON "attendance_corrections"("owner_id", "work_date");

CREATE INDEX "idx_attendance_corrections_department_status"
ON "attendance_corrections"("department_id", "status");

CREATE INDEX "idx_attendance_corrections_status_updated"
ON "attendance_corrections"("status", "updated_at");

CREATE INDEX "workflow_instances_attendance_correction_id_idx"
ON "workflow_instances"("attendance_correction_id");

ALTER TABLE "wecom_checkin_sync_runs"
ADD CONSTRAINT "wecom_checkin_sync_runs_triggered_by_fkey"
FOREIGN KEY ("triggered_by") REFERENCES "employees"("id") ON DELETE SET NULL ON UPDATE CASCADE;

ALTER TABLE "wecom_checkin_records"
ADD CONSTRAINT "wecom_checkin_records_sync_run_id_fkey"
FOREIGN KEY ("sync_run_id") REFERENCES "wecom_checkin_sync_runs"("id") ON DELETE CASCADE ON UPDATE CASCADE;

ALTER TABLE "wecom_checkin_records"
ADD CONSTRAINT "wecom_checkin_records_employee_id_fkey"
FOREIGN KEY ("employee_id") REFERENCES "employees"("id") ON DELETE CASCADE ON UPDATE CASCADE;

ALTER TABLE "attendance_corrections"
ADD CONSTRAINT "attendance_corrections_owner_id_fkey"
FOREIGN KEY ("owner_id") REFERENCES "employees"("id") ON DELETE CASCADE ON UPDATE CASCADE;

ALTER TABLE "attendance_corrections"
ADD CONSTRAINT "attendance_corrections_department_id_fkey"
FOREIGN KEY ("department_id") REFERENCES "departments"("id") ON DELETE SET NULL ON UPDATE CASCADE;

ALTER TABLE "workflow_instances"
ADD CONSTRAINT "workflow_instances_attendance_correction_id_fkey"
FOREIGN KEY ("attendance_correction_id") REFERENCES "attendance_corrections"("id") ON DELETE CASCADE ON UPDATE CASCADE;

INSERT INTO "feature_flags" (
  "id",
  "flag_key",
  "override_mode",
  "rollout_type",
  "department_ids",
  "note",
  "version",
  "created_at",
  "updated_at"
) VALUES (
  '9902678f-58af-4326-b2ce-04690a0b5fa9'::uuid,
  'attendance_unified_v1',
  'force_off',
  'global',
  '[]'::jsonb,
  'bootstrap default: force_off',
  1,
  CURRENT_TIMESTAMP,
  CURRENT_TIMESTAMP
) ON CONFLICT ("flag_key") DO NOTHING;

INSERT INTO "workflow_definitions" (
  "id",
  "name",
  "entity_type",
  "definition_json",
  "version",
  "is_active",
  "created_at",
  "created_by"
) VALUES (
  '113c2ac4-a58b-470b-bd46-c9a3cdc34e97'::uuid,
  '考勤修正审批流程(V1)',
  'attendance_correction',
  '{"steps":[{"id":"attendance_correction_approval_manager","name":"直属经理审批","type":"approval","assignee_rule":{"type":"department_manager"}}]}'::jsonb,
  1,
  true,
  CURRENT_TIMESTAMP,
  NULL
) ON CONFLICT ("entity_type", "version") DO UPDATE
SET
  "name" = EXCLUDED."name",
  "definition_json" = EXCLUDED."definition_json",
  "is_active" = true;