import { apiRequestData } from "./http";

export type FeatureFlagKey = "erp_sync" | "invoice_verification" | "leave_holiday_calendar";
export type FeatureFlagOverrideMode = "inherit" | "force_on" | "force_off";
export type FeatureFlagRolloutType = "global" | "department_allowlist";

export type FeatureFlagItem = {
  id: string | null;
  flagKey: FeatureFlagKey;
  overrideMode: FeatureFlagOverrideMode;
  rolloutType: FeatureFlagRolloutType;
  departmentIds: string[];
  note: string;
  version: number;
  createdAt: string | null;
  createdBy: string | null;
  updatedAt: string | null;
  updatedBy: string | null;
  envEnabled: boolean;
  effectiveEnabled: boolean;
  effectiveReason: string;
  matchedDepartmentId: string | null;
  requiresDepartment: boolean;
};

export type FeatureFlagListResponse = {
  items: FeatureFlagItem[];
};

export type FeatureFlagUpdatePayload = {
  overrideMode: FeatureFlagOverrideMode;
  rolloutType: FeatureFlagRolloutType;
  departmentIds: string[];
  note: string;
  expectedVersion: number;
};

export async function fetchFeatureFlags() {
  return apiRequestData<FeatureFlagListResponse>("/api/system/feature-flags");
}

export async function updateFeatureFlag(flagKey: FeatureFlagKey, payload: FeatureFlagUpdatePayload) {
  return apiRequestData<{ item: FeatureFlagItem }>(`/api/system/feature-flags/${flagKey}`, {
    method: "PUT",
    body: JSON.stringify(payload),
  });
}