import { eq } from "drizzle-orm";
import { appSwitcherConfigSchema, type AppSwitcherConfig } from "@cfdm/shared";
import type { Db } from "./client.js";
import { appSettings } from "./schema.js";

const SETTINGS_ID = "settings-main";

const DEFAULT_APP_SWITCHER: AppSwitcherConfig = {
  menuLabel: "Приложения",
  apps: [
    {
      id: "vps-tracker",
      name: "VPS Tracker",
      subtitle: "Учёт виртуальных серверов",
      url: "http://192.168.100.67:3001",
      icon: "server",
      shortcut: "⌘1",
    },
    {
      id: "cfdm",
      name: "CF Domain Manager",
      subtitle: "Управление доменами",
      url: "http://192.168.100.67:6363",
      icon: "cloud",
      shortcut: "⌘2",
    },
  ],
};

export type AppSettingsDto = {
  id: string;
  appSwitcher: AppSwitcherConfig;
  vpsTrackerUrl: string;
  vpsTrackerIntegrationTokenSet: boolean;
  vpsTrackerSyncEnabled: boolean;
  vpsTrackerLastSyncAt: string | null;
};

export type AppSettingsPatch = {
  appSwitcher?: AppSwitcherConfig;
  vpsTrackerUrl?: string;
  vpsTrackerIntegrationToken?: string;
  vpsTrackerSyncEnabled?: boolean;
};

function parseAppSwitcher(raw: string | null | undefined): AppSwitcherConfig {
  if (!raw?.trim()) return DEFAULT_APP_SWITCHER;
  try {
    return appSwitcherConfigSchema.parse(JSON.parse(raw));
  } catch {
    return DEFAULT_APP_SWITCHER;
  }
}

function toDto(row: typeof appSettings.$inferSelect): AppSettingsDto {
  return {
    id: row.id,
    appSwitcher: parseAppSwitcher(row.app_switcher_json),
    vpsTrackerUrl: row.vps_tracker_url?.trim() ?? "",
    vpsTrackerIntegrationTokenSet: Boolean(
      row.vps_tracker_integration_token?.trim(),
    ),
    vpsTrackerSyncEnabled: Boolean(row.vps_tracker_sync_enabled),
    vpsTrackerLastSyncAt: row.vps_tracker_last_sync_at,
  };
}

export function getAppSettings(db: Db): AppSettingsDto {
  const row = db
    .select()
    .from(appSettings)
    .where(eq(appSettings.id, SETTINGS_ID))
    .get();
  if (!row) {
    db.insert(appSettings).values({ id: SETTINGS_ID }).run();
    return toDto(
      db.select().from(appSettings).where(eq(appSettings.id, SETTINGS_ID)).get()!,
    );
  }
  return toDto(row);
}

export function getAppSettingsSecrets(db: Db): {
  vpsTrackerUrl: string;
  vpsTrackerIntegrationToken: string;
  vpsTrackerSyncEnabled: boolean;
} {
  const row = db
    .select()
    .from(appSettings)
    .where(eq(appSettings.id, SETTINGS_ID))
    .get();
  return {
    vpsTrackerUrl: row?.vps_tracker_url?.trim() ?? "",
    vpsTrackerIntegrationToken:
      row?.vps_tracker_integration_token?.trim() ?? "",
    vpsTrackerSyncEnabled: Boolean(row?.vps_tracker_sync_enabled),
  };
}

export function updateAppSettings(db: Db, patch: AppSettingsPatch): AppSettingsDto {
  const existing = db
    .select()
    .from(appSettings)
    .where(eq(appSettings.id, SETTINGS_ID))
    .get();
  if (!existing) {
    db.insert(appSettings).values({ id: SETTINGS_ID }).run();
  }
  const current = db
    .select()
    .from(appSettings)
    .where(eq(appSettings.id, SETTINGS_ID))
    .get()!;

  db.update(appSettings)
    .set({
      app_switcher_json:
        patch.appSwitcher !== undefined
          ? JSON.stringify(patch.appSwitcher)
          : current.app_switcher_json,
      vps_tracker_url:
        patch.vpsTrackerUrl !== undefined
          ? patch.vpsTrackerUrl
          : current.vps_tracker_url,
      vps_tracker_integration_token:
        patch.vpsTrackerIntegrationToken !== undefined &&
        patch.vpsTrackerIntegrationToken.trim() !== ""
          ? patch.vpsTrackerIntegrationToken
          : current.vps_tracker_integration_token,
      vps_tracker_sync_enabled:
        patch.vpsTrackerSyncEnabled !== undefined
          ? patch.vpsTrackerSyncEnabled
          : current.vps_tracker_sync_enabled,
      updated_at: new Date().toISOString(),
    })
    .where(eq(appSettings.id, SETTINGS_ID))
    .run();

  return getAppSettings(db);
}

export function touchVpsTrackerSync(db: Db): void {
  db.update(appSettings)
    .set({
      vps_tracker_last_sync_at: new Date().toISOString(),
      updated_at: new Date().toISOString(),
    })
    .where(eq(appSettings.id, SETTINGS_ID))
    .run();
}

export function getAppSwitcher(db: Db): AppSwitcherConfig {
  return getAppSettings(db).appSwitcher;
}