import { apiRequestData } from "./http";

export type ReimbursementTemplateItem = {
  expenseTypeId: string;
  description: string;
  defaultAmount?: string;
};

export type ReimbursementTemplate = {
  id: string;
  name: string;
  description: string | null;
  items: ReimbursementTemplateItem[];
  sortOrder: number;
  enabled: boolean;
  createdAt: string | null;
  updatedAt: string | null;
};

export type ReimbursementTemplateListResponse = {
  enabled: boolean | null;
  items: ReimbursementTemplate[];
};

export type ReimbursementTemplateListQuery = {
  enabled?: boolean;
};

export type CreateReimbursementTemplatePayload = {
  name: string;
  description?: string | null;
  items?: ReimbursementTemplateItem[];
  sortOrder?: number;
  enabled?: boolean;
};

export type UpdateReimbursementTemplatePayload = {
  name?: string;
  description?: string | null;
  items?: ReimbursementTemplateItem[];
  sortOrder?: number;
  enabled?: boolean;
};

function toQueryString(query: Record<string, string | number | boolean | undefined>) {
  const params = new URLSearchParams();

  for (const [key, value] of Object.entries(query)) {
    if (value == null || value === "") {
      continue;
    }
    params.set(key, String(value));
  }

  const encoded = params.toString();
  return encoded ? `?${encoded}` : "";
}

export async function fetchReimbursementTemplates(query: ReimbursementTemplateListQuery = {}) {
  return apiRequestData<ReimbursementTemplateListResponse>(
    `/api/reimbursement-templates${toQueryString(query as Record<string, string | number | boolean | undefined>)}`,
  );
}

export async function createReimbursementTemplate(payload: CreateReimbursementTemplatePayload) {
  return apiRequestData<ReimbursementTemplate>("/api/reimbursement-templates", {
    method: "POST",
    body: JSON.stringify(payload),
  });
}

export async function updateReimbursementTemplate(
  templateId: string,
  payload: UpdateReimbursementTemplatePayload,
) {
  return apiRequestData<ReimbursementTemplate>(`/api/reimbursement-templates/${templateId}`, {
    method: "PATCH",
    body: JSON.stringify(payload),
  });
}

export async function deleteReimbursementTemplate(templateId: string) {
  return apiRequestData<ReimbursementTemplate>(`/api/reimbursement-templates/${templateId}`, {
    method: "DELETE",
  });
}