import axios from "axios";

const api = axios.create({ baseURL: "/api" });

api.interceptors.request.use((config) => {
  const token = localStorage.getItem("token");
  if (token) config.headers.Authorization = `Bearer ${token}`;
  return config;
});

export default api;

// --- Auth ---
export const login = (email: string, password: string) =>
  api
    .post<{ access_token: string }>("/auth/login", new URLSearchParams({ username: email, password }))
    .then((r) => r.data.access_token);

export const register = (email: string, password: string, full_name?: string) =>
  api.post("/auth/register", { email, password, full_name }).then((r) => r.data);

// --- Users ---
export interface UserData {
  id: string;
  email: string;
  full_name: string | null;
  is_active: boolean;
  is_admin: boolean;
  color_mode: string | null;
}

export const getMe = () => api.get<UserData>("/users/me").then((r) => r.data);

export interface DashboardPrefs {
  app_ids: string[];
}

export const getDashboardPrefs = () =>
  api.get<DashboardPrefs>("/users/me/preferences").then((r) => r.data);

export const updateDashboardPrefs = (app_ids: string[]) =>
  api.patch<DashboardPrefs>("/users/me/preferences", { app_ids }).then((r) => r.data);

// --- Admin ---
export interface AdminUserCreate {
  email: string;
  password: string;
  full_name?: string;
  is_admin?: boolean;
}

export const adminGetUsers = () =>
  api.get<UserData[]>("/admin/users").then((r) => r.data);

export const adminCreateUser = (data: AdminUserCreate) =>
  api.post<UserData>("/admin/users", data).then((r) => r.data);

export const adminDeleteUser = (userId: string) =>
  api.delete(`/admin/users/${userId}`);

export const adminToggleActive = (userId: string) =>
  api.patch<UserData>(`/admin/users/${userId}/active`).then((r) => r.data);

// --- Profile ---
export interface ProfileData {
  id: string;
  user_id: string;
  phone: string | null;
  date_of_birth: string | null;
  position: string | null;
  address: string | null;
  updated_at: string;
}

export interface ProfileUpdate {
  phone?: string | null;
  date_of_birth?: string | null;
  position?: string | null;
  address?: string | null;
}

export const getProfile = () =>
  api.get<ProfileData>("/profile/me").then((r) => r.data);

export const updateProfile = (data: ProfileUpdate) =>
  api.put<ProfileData>("/profile/me", data).then((r) => r.data);

// --- Documents ---
export type DocumentStatus = "pending" | "processing" | "done" | "failed";

export interface CategoryOut {
  id: string;
  name: string;
}

export interface DocumentOut {
  id: string;
  user_id: string;
  filename: string;
  title: string | null;
  file_size: number;
  status: DocumentStatus;
  document_type: string | null;
  extracted_data: string | null;
  tags: string | null;
  error_message: string | null;
  created_at: string;
  processed_at: string | null;
  categories: CategoryOut[];
  source: string;
  watch_path: string | null;
  suggested_folder: string | null;
  suggested_filename: string | null;
  share_count: number;
}

export interface SharedDocumentOut extends DocumentOut {
  shared_by_user_id: string;
  shared_via_group_id: string;
}

export interface DocumentShareOut {
  id: string;
  document_id: string;
  group_id: string;
  shared_by_user_id: string;
  created_at: string;
}

export interface DocumentPage {
  items: DocumentOut[];
  total: number;
  page: number;
  pages: number;
}

export interface DocumentListParams {
  page?: number;
  per_page?: number;
  sort?: string;
  order?: "asc" | "desc";
  status?: string;
  document_type?: string;
  search?: string;
  category_id?: string;
}

export interface DocumentStatusOut {
  id: string;
  status: DocumentStatus;
  document_type: string | null;
  error_message: string | null;
  processed_at: string | null;
}

export const listDocuments = (params: DocumentListParams = {}) =>
  api.get<DocumentPage>("/documents", { params }).then((r) => r.data);

export const listSharedWithMe = (params: DocumentListParams = {}) =>
  api.get<DocumentPage>("/documents/shared-with-me", { params }).then((r) => r.data);

export const getDocumentShares = (docId: string) =>
  api.get<DocumentShareOut[]>(`/documents/${docId}/shares`).then((r) => r.data);

export const addDocumentShare = (docId: string, groupId: string) =>
  api.post<DocumentShareOut>(`/documents/${docId}/shares`, { group_id: groupId }).then((r) => r.data);

export const removeDocumentShare = (docId: string, groupId: string) =>
  api.delete(`/documents/${docId}/shares/${groupId}`);

export const getDocument = (id: string) =>
  api.get<DocumentOut>(`/documents/${id}`).then((r) => r.data);

export const getDocumentStatus = (id: string) =>
  api.get<DocumentStatusOut>(`/documents/${id}/status`).then((r) => r.data);

export const uploadDocument = (file: File) => {
  const form = new FormData();
  form.append("file", file);
  return api.post<DocumentOut>("/documents/upload", form).then((r) => r.data);
};

export const updateDocumentType = (id: string, document_type: string) =>
  api.patch<DocumentOut>(`/documents/${id}/type`, { document_type }).then((r) => r.data);

export const deleteDocument = (id: string) =>
  api.delete(`/documents/${id}`);

export const downloadDocument = async (id: string, filename: string) => {
  const response = await api.get(`/documents/${id}/file`, { responseType: "blob" });
  const url = URL.createObjectURL(response.data);
  const a = document.createElement("a");
  a.href = url;
  a.download = filename;
  a.click();
  URL.revokeObjectURL(url);
};

export const viewDocument = async (id: string): Promise<void> => {
  const response = await api.get(`/documents/${id}/file`, { responseType: "blob" });
  const url = URL.createObjectURL(response.data);
  const win = window.open(url, "_blank");
  // Revoke after a generous delay — the new tab needs time to load the blob
  setTimeout(() => URL.revokeObjectURL(url), 60_000);
  if (!win) alert("Pop-up blocked. Please allow pop-ups for this site to preview PDFs.");
};

export const updateDocumentTags = (id: string, tags: string[]) =>
  api.patch<DocumentOut>(`/documents/${id}/tags`, { tags }).then((r) => r.data);

export const updateDocumentTitle = (id: string, title: string) =>
  api.patch<DocumentOut>(`/documents/${id}/title`, { title }).then((r) => r.data);

export const reprocessDocument = (id: string) =>
  api.post<DocumentOut>(`/documents/${id}/reprocess`).then((r) => r.data);

export const assignCategory = (docId: string, catId: string) =>
  api.post(`/documents/${docId}/categories/${catId}`);

export const removeCategory = (docId: string, catId: string) =>
  api.delete(`/documents/${docId}/categories/${catId}`);

// --- Categories ---
export const listCategories = () =>
  api.get<CategoryOut[]>("/documents/categories").then((r) => r.data);

export const createCategory = (name: string) =>
  api.post<CategoryOut>("/documents/categories", { name }).then((r) => r.data);

export const renameCategory = (id: string, name: string) =>
  api.patch<CategoryOut>(`/documents/categories/${id}`, { name }).then((r) => r.data);

export const deleteCategory = (id: string) =>
  api.delete(`/documents/categories/${id}`);

// --- Appearance & Themes ---
export interface ThemeColors {
  primary: string;
  primary_hover: string;
  accent: string;
  accent_hover: string;
  background: string;
  surface: string;
  border: string;
  text_primary: string;
  text_muted: string;
}

export interface ThemeDefinition {
  id: string;
  label: string;
  builtin: boolean;
  light: ThemeColors;
  dark: ThemeColors;
}

export interface AppearanceSettings {
  theme: string;
  default_mode: string;
}

export const getAppearanceSettings = (): Promise<AppearanceSettings> =>
  api.get<AppearanceSettings>("/settings/appearance").then((r) => r.data);

export const updateAppearanceSettings = (data: AppearanceSettings): Promise<AppearanceSettings> =>
  api.patch<AppearanceSettings>("/settings/appearance", data).then((r) => r.data);

export const getThemes = (): Promise<ThemeDefinition[]> =>
  api.get<ThemeDefinition[]>("/settings/themes").then((r) => r.data);

export const createTheme = (data: Omit<ThemeDefinition, "builtin">): Promise<ThemeDefinition> =>
  api.post<ThemeDefinition>("/settings/themes", data).then((r) => r.data);

export const updateTheme = (
  id: string,
  data: { label?: string; light?: ThemeColors; dark?: ThemeColors }
): Promise<ThemeDefinition> =>
  api.patch<ThemeDefinition>(`/settings/themes/${id}`, data).then((r) => r.data);

export const deleteTheme = (id: string): Promise<void> =>
  api.delete(`/settings/themes/${id}`).then((r) => r.data);

export const updateColorMode = (color_mode: string): Promise<UserData> =>
  api.patch<UserData>("/users/me/color-mode", { color_mode }).then((r) => r.data);

// --- Settings (admin only) ---
export interface AIProviderUpdate {
  provider: string;
  anthropic_api_key?: string;
  anthropic_model?: string;
  ollama_base_url?: string;
  ollama_model?: string;
  ollama_api_key?: string;
  lmstudio_base_url?: string;
  lmstudio_model?: string;
  lmstudio_api_key?: string;
}

export const getAISettings = () =>
  api.get<Record<string, unknown>>("/settings/ai").then((r) => r.data);

export const updateAISettings = (data: AIProviderUpdate) =>
  api.patch<Record<string, unknown>>("/settings/ai", data).then((r) => r.data);

export const testAIConnection = () =>
  api.post<{ ok: boolean; provider: string; response?: string; error?: string }>(
    "/settings/ai/test"
  ).then((r) => r.data);

export const updateDocumentLimits = (max_pdf_mb: number) =>
  api.patch<Record<string, unknown>>("/settings/documents/limits", { max_pdf_mb }).then(
    (r) => r.data
  );

export const getDocumentLimits = () =>
  api.get<Record<string, unknown>>("/settings/documents/limits").then((r) => r.data);

// --- User groups (current user's own memberships) ---
export interface UserGroupOut {
  id: string;
  name: string;
  description: string | null;
}

export const getMyGroups = () =>
  api.get<UserGroupOut[]>("/users/me/groups").then((r) => r.data);

// --- Groups (admin only) ---
export interface GroupOut {
  id: string;
  name: string;
  description: string | null;
  created_at: string;
  member_count: number;
}

export interface GroupMemberOut {
  id: string;
  email: string;
  full_name: string | null;
  is_active: boolean;
  joined_at: string;
}

export interface GroupDetailOut extends GroupOut {
  members: GroupMemberOut[];
}

export interface GroupCreate {
  name: string;
  description?: string | null;
}

export interface GroupUpdate {
  name?: string;
  description?: string | null;
}

export const adminListGroups = () =>
  api.get<GroupOut[]>("/admin/groups").then((r) => r.data);

export const adminCreateGroup = (data: GroupCreate) =>
  api.post<GroupOut>("/admin/groups", data).then((r) => r.data);

export const adminGetGroup = (groupId: string) =>
  api.get<GroupDetailOut>(`/admin/groups/${groupId}`).then((r) => r.data);

export const adminUpdateGroup = (groupId: string, data: GroupUpdate) =>
  api.patch<GroupOut>(`/admin/groups/${groupId}`, data).then((r) => r.data);

export const adminDeleteGroup = (groupId: string) =>
  api.delete(`/admin/groups/${groupId}`);

export const adminAddGroupMember = (groupId: string, userId: string) =>
  api.post(`/admin/groups/${groupId}/members/${userId}`);

export const adminRemoveGroupMember = (groupId: string, userId: string) =>
  api.delete(`/admin/groups/${groupId}/members/${userId}`);

// --- Services ---
export interface ServiceStatus {
  id: string;
  name: string;
  description: string;
  healthy: boolean;
  app_path: string;
  settings_path: string;
}

export const getServices = () =>
  api.get<ServiceStatus[]>("/services").then((r) => r.data);

// --- System Prompts (admin only) ---
export interface ServiceSystemPrompt {
  label: string;
  system: string;
  user_template: string;
  default_system: string;
  default_user_template: string;
}

export type SystemPromptsData = Record<string, ServiceSystemPrompt>;

export const getSystemPrompts = () =>
  api.get<SystemPromptsData>("/settings/system-prompts").then((r) => r.data);

export const updateSystemPrompt = (
  serviceId: string,
  data: { system: string; user_template: string }
) =>
  api
    .patch<SystemPromptsData>(`/settings/system-prompts/${serviceId}`, data)
    .then((r) => r.data);

// --- Document suggestions (watch-ingested documents) ---
export const confirmFolderSuggestion = (docId: string) =>
  api.post(`/documents/${docId}/suggestions/folder/confirm`);

export const rejectFolderSuggestion = (docId: string) =>
  api.post(`/documents/${docId}/suggestions/folder/reject`);

export const confirmFilenameSuggestion = (docId: string) =>
  api.post(`/documents/${docId}/suggestions/filename/confirm`);

export const rejectFilenameSuggestion = (docId: string) =>
  api.post(`/documents/${docId}/suggestions/filename/reject`);

// --- Plugins ---
export interface PluginOut {
  id: string;
  name: string;
  icon: string;
  version: string;
}

export interface PluginSchemaProperty {
  type: string;
  title: string;
  description?: string;
  readOnly?: boolean;
}

export interface PluginManifest {
  id: string;
  name: string;
  icon: string;
  version: string;
  access: {
    allow_superuser: boolean;
    required_groups: string[];
  };
  settings_schema: {
    type: string;
    title?: string;
    properties: Record<string, PluginSchemaProperty>;
  };
}

export const getPlugins = () =>
  api.get<PluginOut[]>("/plugins").then((r) => r.data);

export const getPluginManifest = (id: string) =>
  api.get<PluginManifest>(`/plugins/${id}/manifest`).then((r) => r.data);

export const getPluginSettings = (id: string) =>
  api.get<Record<string, unknown>>(`/plugins/${id}/settings`).then((r) => r.data);

export const updatePluginSettings = (id: string, data: Record<string, unknown>) =>
  api.patch<Record<string, unknown>>(`/plugins/${id}/settings`, data).then((r) => r.data);