import { API_BASE_URL } from "@config/config_frontend";

export interface DashboardUser {
  id: number;
  email: string;
  name: string;
  position?: string | null;
  department?: string | null;
  phone?: string | null;
  company_id?: number | null;
  company_name?: string | null;
  role: "SYSTEM_ADMIN" | "ADMIN" | "USER";
  is_master: boolean;
  status: string;
  /** 서버가 하드 삭제 모드인지 (`PROJECT_DELETE_HARD_ENABLED`). GET /me에서만 채워진다. */
  project_delete_hard?: boolean;
}

export interface WorkflowStageState {
  stage_no: number;
  stage_key: string;
  state: "NOT_STARTED" | "IN_PROGRESS" | "COMPLETE" | "FAILED" | "STALE";
  progress_percent: number;
  params?: any | null;
  message?: string | null;
  started_at?: string | null;
  completed_at?: string | null;
}

export interface WorkflowState {
  project_id: string;
  /** 좌측 제목 줄 오른쪽에 붙는 프로젝트 이름 (2026-09-04 사용자 지시). */
  project_name?: string | null;
  current_stage: number;
  stages: WorkflowStageState[];
}

export interface ProjectItem {
  id: string;
  company_id?: number | null;
  name: string;
  region?: string | null;
  road_type?: string | null;
  project_year?: number | null;
  estimated_length_m?: number | null;
  /** 계획노선 사용 범위 (2026-09-04 사용자 지시) — 비우면 전 구간. */
  route_start_m?: number | null;
  route_end_m?: number | null;
  memo?: string | null;
  status?: string | null;
  /** 도면 표제란·표지에 실리는 값 — 프로그램이 지어낼 수 없어 사람이 넣는다 */
  client_org?: string | null;
  project_number?: string | null;
  work_amount?: string | null;
  design_date?: string | null;
  /** 담당자는 회사 구성원(users.id), 로고·서명은 회사 공유 자산(company_assets.id) */
  pm_user_id?: number | null;
  field_lead_user_id?: number | null;
  designer_user_id?: number | null;
  logo_asset_id?: number | null;
  signature_asset_id?: number | null;
  /** 참여자 (2026-09-06 사용자 확정) — 여기 든 사람은 일반 사용자여도 수정할 수 있다. */
  member_user_ids?: number[];
  owner_name?: string | null;
  workflow_stage: number;
  workflow_state?: WorkflowState;
  updated_at?: string | null;
}

export interface CompanyInfo {
  id: number;
  name: string;
  business_registration_number?: string | null;
  business_address?: string | null;
  business_owner?: string | null;
  business_status?: string | null;
  logo_asset_id?: number | null;
  user_count?: number;
  project_count?: number;
}

export interface Member {
  id: number;
  email: string;
  name: string;
  position?: string | null;
  department?: string | null;
  role: string;
  status: string;
}

/** 회사 안에서 공유하는 도면 자산(로고·서명). user_id 가 없으면 회사 공용. */
export interface CompanyAsset {
  id: number;
  company_id: number;
  kind: "LOGO" | "SIGNATURE";
  label: string;
  user_id?: number | null;
  user_name?: string | null;
}

export interface JoinRequest {
  id: number;
  user_id: number;
  company_id: number;
  user_email: string;
  user_name?: string | null;
  company_name?: string | null;
  requested_at: string;
  status: string;
}

export interface AuditLog {
  id: number;
  user_id: number;
  email?: string | null;
  action: string;
  resource_type?: string | null;
  resource_id?: number | null;
  /** 대상 식별자 문자열 — 프로젝트는 UUID 라 숫자 칸에 못 담는다 (2026-09-06). */
  resource_ref?: string | null;
  ip_address?: string | null;
  timestamp: string;
}

export interface ResourceSnapshot {
  cpu_usage_percent: number | null;
  memory_usage_percent: number | null;
  disk_usage_percent: number | null;
  active_user_count: number;
  active_project_count: number;
  total_storage_mb: number;
}

export interface ResourceHistoryPoint {
  timestamp: string;
  cpu_usage_percent: number | null;
  memory_usage_percent: number | null;
  disk_usage_percent: number | null;
  active_user_count: number;
  active_project_count: number;
  total_storage_mb: number;
}

export interface ResourceData {
  current: ResourceSnapshot;
  history: ResourceHistoryPoint[];
  stats: ResourceSnapshot;
}

export interface UpdateUserRequest {
  name: string;
  position?: string | null;
  department?: string | null;
  phone?: string | null;
}

export interface UpdateProjectRequest {
  name: string;
  region?: string | null;
  road_type?: string | null;
  project_year?: number | null;
  estimated_length_m?: number | null;
  /** 계획노선 사용 범위 (2026-09-04 사용자 지시) — 비우면 전 구간. */
  route_start_m?: number | null;
  route_end_m?: number | null;
  memo?: string | null;
  status?: string | null;
  client_org?: string | null;
  project_number?: string | null;
  work_amount?: string | null;
  design_date?: string | null;
  pm_user_id?: number | null;
  field_lead_user_id?: number | null;
  designer_user_id?: number | null;
  logo_asset_id?: number | null;
  signature_asset_id?: number | null;
  member_user_ids?: number[] | null;
}

export interface AdminUpdateUserRequest extends UpdateUserRequest {
  status?: string | null;
}

export interface CreateCompanyRequest {
  name: string;
  business_registration_number: string;
  business_address?: string | null;
  business_owner?: string | null;
}

export interface ChangePasswordRequest {
  current_password: string;
  new_password: string;
  new_password_confirm: string;
  logout_all: boolean;
}

async function request<T>(path: string, init: RequestInit = {}): Promise<T> {
  const response = await fetch(`${API_BASE_URL}${path}`, {
    credentials: "include",
    headers: { "Content-Type": "application/json", ...(init.headers ?? {}) },
    ...init,
  });
  const data = (await response.json()) as { detail?: string } & T;
  if (!response.ok) throw new Error(data.detail ?? "Request failed");
  return data;
}

const body = (value: object): string => JSON.stringify(value);

export async function fetchDashboardMe(): Promise<DashboardUser> {
  const data = await request<{ user: DashboardUser }>("/dashboard/me");
  return data.user;
}

export async function updateUserProfile(payload: UpdateUserRequest): Promise<DashboardUser> {
  const data = await request<{ user: DashboardUser }>("/dashboard/me", {
    method: "PATCH",
    body: body(payload),
  });
  return data.user;
}

export function changePassword(payload: ChangePasswordRequest): Promise<unknown> {
  return request("/auth/password", {
    method: "POST",
    body: body(payload),
  });
}

export async function fetchUserProjects(): Promise<ProjectItem[]> {
  const data = await request<{ projects: ProjectItem[] }>("/dashboard/user/projects");
  return data.projects;
}

export async function fetchUserCompany(): Promise<CompanyInfo | null> {
  const data = await request<{ company: CompanyInfo | null }>("/dashboard/user/company");
  return data.company;
}

export async function searchCompanies(query: string): Promise<CompanyInfo[]> {
  const data = await request<{ companies: CompanyInfo[] }>(
    `/dashboard/user/companies?q=${encodeURIComponent(query)}`,
  );
  return data.companies;
}

export function createCompany(
  payload: CreateCompanyRequest,
): Promise<{ company_id: number; status: string }> {
  return request("/dashboard/user/company/create", { method: "POST", body: body(payload) });
}

export function createSystemCompany(payload: CreateCompanyRequest): Promise<unknown> {
  return request("/dashboard/admin/companies", { method: "POST", body: body(payload) });
}

export function joinCompany(companyId: number): Promise<unknown> {
  return request("/dashboard/user/company/join", {
    method: "POST",
    body: body({ company_id: companyId }),
  });
}

const companyQuery = (companyId?: number | null): string =>
  companyId ? `?company_id=${encodeURIComponent(companyId)}` : "";

/** companyId 는 시스템관리자가 남의 회사 프로젝트를 고칠 때만 넘긴다. */
export async function fetchCompanyMembers(companyId?: number | null): Promise<Member[]> {
  const data = await request<{ members: Member[] }>(
    `/dashboard/admin/members${companyQuery(companyId)}`,
  );
  return data.members;
}

export async function fetchCompanyAssets(companyId?: number | null): Promise<CompanyAsset[]> {
  const data = await request<{ assets: CompanyAsset[] }>(
    `/dashboard/company/assets${companyQuery(companyId)}`,
  );
  return data.assets;
}

/** multipart 업로드라 `request()`의 JSON 헤더를 쓰지 않는다. */
export async function createCompanyAsset(form: FormData): Promise<number> {
  const response = await fetch(`${API_BASE_URL}/dashboard/company/assets`, {
    method: "POST",
    credentials: "include",
    body: form,
  });
  const data = (await response.json()) as { detail?: string; asset_id: number };
  if (!response.ok) throw new Error(data.detail ?? "Request failed");
  return data.asset_id;
}

/** 자산의 이름·주인을 고친다. 서명을 사람 계정에 물릴 때 쓴다 (2026-09-02). */
export function updateCompanyAsset(
  assetId: number,
  payload: { label: string; user_id: number | null },
): Promise<unknown> {
  return request(`/dashboard/company/assets/${assetId}`, {
    method: "PUT",
    body: body(payload),
  });
}

export function deleteCompanyAsset(assetId: number): Promise<unknown> {
  return request(`/dashboard/company/assets/${assetId}`, { method: "DELETE" });
}

export const companyAssetFileUrl = (assetId: number): string =>
  `${API_BASE_URL}/dashboard/company/assets/${assetId}/file`;

/** 주소를 좌표로 바꾼다 (회사 주소 지도 미리보기). */
export async function geocodeAddress(address: string): Promise<{ lat: number; lon: number }> {
  return request(`/dashboard/company/geocode?address=${encodeURIComponent(address)}`);
}

/** 주소 후보 한 줄 — 검색해서 골라 넣는 용도. */
export interface AddressCandidate {
  zipcode: string;
  road: string;
  parcel: string;
  building: string;
  category: string;
  lat: number;
  lon: number;
}

/** 주소를 검색해 후보를 받는다 (도로명 먼저, 없으면 지번). */
export async function searchAddress(query: string): Promise<AddressCandidate[]> {
  const body = await request<{ items?: AddressCandidate[] }>(
    `/dashboard/company/address/search?query=${encodeURIComponent(query)}`,
  );
  return body.items ?? [];
}

/** 회사 정보 수정 — 시스템관리자만 companyId 로 남의 회사를 지정한다. */
export function updateCompany(
  payload: {
    name: string;
    business_registration_number: string;
    business_address: string | null;
    business_owner: string | null;
  },
  companyId?: number | null,
): Promise<unknown> {
  return request(`/dashboard/company${companyQuery(companyId)}`, {
    method: "PUT",
    body: body(payload),
  });
}

/** 팀원으로 부를 수 있는 사람 — 소속 없는 가입자만 (2026-09-06 사용자 확정). */
export async function searchMemberCandidates(query: string): Promise<Member[]> {
  const data = await request<{ users: Member[] }>(
    `/dashboard/admin/members/candidates?q=${encodeURIComponent(query)}`,
  );
  return data.users;
}

/** 이미 가입한 사람을 회사에 붙인다 — 계정을 대신 만들지 않는다. */
export function addCompanyMember(userId: number): Promise<{ member: Member }> {
  return request("/dashboard/admin/members", {
    method: "POST",
    body: body({ user_id: userId }),
  });
}

/** 아직 가입하지 않은 사람에게 가입 안내 메일만 보낸다. */
export function inviteMember(email: string, name?: string | null): Promise<unknown> {
  return request("/dashboard/admin/members/invite", {
    method: "POST",
    body: body({ email, name: name || null }),
  });
}

/** 계정 삭제 (회사에서 빼기가 아니라 계정 자체). 회사 관리자는 자기 회사 사람만. */
export function deleteDashboardUser(userId: number): Promise<unknown> {
  return request(`/dashboard/admin/users/${userId}`, { method: "DELETE" });
}

/** 회사 대표 로고 지정·변경. 프로젝트가 따로 안 고르면 도면이 이 로고를 쓴다. */
export function setCompanyLogo(
  logoAssetId: number | null,
  companyId?: number | null,
): Promise<unknown> {
  return request(`/dashboard/company/logo${companyQuery(companyId)}`, {
    method: "PUT",
    body: body({ logo_asset_id: logoAssetId }),
  });
}

export function removeCompanyMember(userId: number): Promise<unknown> {
  return request(`/dashboard/admin/members/${userId}`, { method: "DELETE" });
}

export async function fetchCompanyJoinRequests(): Promise<JoinRequest[]> {
  const data = await request<{ requests: JoinRequest[] }>("/dashboard/admin/join-requests");
  return data.requests;
}

export function processJoinRequest(
  requestId: number,
  action: "APPROVE" | "REJECT",
): Promise<unknown> {
  return request(`/dashboard/admin/join-requests/${requestId}`, {
    method: "PATCH",
    body: body({ action }),
  });
}

export async function fetchCompanyProjects(): Promise<ProjectItem[]> {
  const data = await request<{ projects: ProjectItem[] }>("/dashboard/admin/projects");
  return data.projects;
}

export async function fetchAllProjects(): Promise<ProjectItem[]> {
  const data = await request<{ projects: ProjectItem[] }>("/dashboard/admin/projects-all");
  return data.projects;
}

export async function fetchAllCompanies(): Promise<CompanyInfo[]> {
  const data = await request<{ companies: CompanyInfo[] }>("/dashboard/admin/companies");
  return data.companies;
}

export async function fetchAllUsers(): Promise<DashboardUser[]> {
  const data = await request<{ users: DashboardUser[] }>("/dashboard/admin/users");
  return data.users;
}

export function changeUserRole(userId: number, role: string): Promise<unknown> {
  return request(`/dashboard/admin/users/${userId}/role`, {
    method: "PATCH",
    body: body({ role }),
  });
}

export function updateProject(projectId: string, payload: UpdateProjectRequest): Promise<unknown> {
  return request(`/dashboard/projects/${encodeURIComponent(projectId)}`, {
    method: "PUT",
    body: body(payload),
  });
}

export function deleteProject(projectId: string): Promise<unknown> {
  return request(`/dashboard/projects/${encodeURIComponent(projectId)}`, { method: "DELETE" });
}

export function updateDashboardUser(
  userId: number,
  payload: AdminUpdateUserRequest,
): Promise<unknown> {
  return request(`/dashboard/admin/users/${userId}`, {
    method: "PUT",
    body: body(payload),
  });
}

export function assignUserToCompany(userId: number, companyId: number | null): Promise<unknown> {
  return request(`/dashboard/admin/users/${userId}/company`, {
    method: "PATCH",
    body: body({ company_id: companyId }),
  });
}

export async function fetchAllJoinRequests(): Promise<JoinRequest[]> {
  const data = await request<{ requests: JoinRequest[] }>("/dashboard/admin/join-requests-all");
  return data.requests;
}

export function systemApproveJoinRequest(requestId: number): Promise<unknown> {
  return request(`/dashboard/admin/join-requests/${requestId}/approve`, { method: "PATCH" });
}

export async function fetchAuditLogs(): Promise<AuditLog[]> {
  const data = await request<{ items: AuditLog[] }>("/dashboard/admin/audit-logs");
  return data.items;
}

export async function fetchSystemResources(days = 30): Promise<ResourceData> {
  return request<ResourceData>(`/dashboard/admin/resources?days=${encodeURIComponent(days)}`);
}

export async function fetchProjectWorkflowState(projectId: string): Promise<WorkflowState> {
  // 응답은 `{status, workflow_state}` 껍데기로 온다 — 벗겨서 상태만 넘긴다.
  const data = await request<{ workflow_state?: WorkflowState } & WorkflowState>(
    `/projects/${projectId}/workflow-state`,
    { method: "GET" },
  );
  return data.workflow_state ?? data;
}