import { prisma } from "./prisma";

// Settings keys and their env var fallbacks
const SETTINGS_KEYS = {
  // Claude Code CLI authentication (OAuth access token from Claude Max)
  CLAUDE_CODE_OAUTH_TOKEN: { envVar: "CLAUDE_CODE_OAUTH_TOKEN", label: "Claude Code OAuth Token", placeholder: "sk-ant-oat01-...", secret: true },

  // Postiz
  POSTIZ_URL: { envVar: "POSTIZ_URL", label: "Postiz URL", placeholder: "http://localhost:5000" },
  POSTIZ_API_KEY: { envVar: "POSTIZ_API_KEY", label: "Postiz API Key", placeholder: "your-postiz-api-key", secret: true },

  // Tavily (Research)
  TAVILY_API_KEY: { envVar: "TAVILY_API_KEY", label: "Tavily API Key", placeholder: "tvly-...", secret: true },

  // Google Gemini (NanoBanana image generation)
  GEMINI_API_KEY: { envVar: "GEMINI_API_KEY", label: "Google Gemini API Key", placeholder: "AIza...", secret: true },

  // Nextdoor
  NEXTDOOR_API_TOKEN: { envVar: "NEXTDOOR_API_TOKEN", label: "Nextdoor API Token", placeholder: "your-nextdoor-token", secret: true },
  NEXTDOOR_ADVERTISER_ID: { envVar: "NEXTDOOR_ADVERTISER_ID", label: "Nextdoor Advertiser ID", placeholder: "your-advertiser-id" },
} as const;

export type SettingKey = keyof typeof SETTINGS_KEYS;

export const SETTINGS_CONFIG = SETTINGS_KEYS;

// Grouped for UI
export const SETTINGS_GROUPS = [
  {
    name: "Claude",
    description: "OAuth access token for the Claude Code CLI subprocess that drives every pipeline agent. Get one with `claude setup-token` then `security find-generic-password -s 'Claude Code-credentials' -a $(whoami) -w` and use the `claudeAiOauth.accessToken` field. Tokens expire — refresh here when launches start failing with auth errors.",
    docsUrl: "https://docs.claude.com/en/docs/claude-code/setup",
    keys: ["CLAUDE_CODE_OAUTH_TOKEN"] as SettingKey[],
  },
  {
    name: "Postiz",
    description: "Self-hosted social media scheduling. Handles Instagram and TikTok publishing.",
    docsUrl: "https://postiz.com",
    keys: ["POSTIZ_URL", "POSTIZ_API_KEY"] as SettingKey[],
  },
  {
    name: "Tavily",
    description: "AI-powered web research. Used by the Trend Scout and Research agents. Free tier: 1,000 searches/month.",
    docsUrl: "https://tavily.com",
    keys: ["TAVILY_API_KEY"] as SettingKey[],
  },
  {
    name: "Gemini",
    description: "Google Gemini powers NanoBanana MCP for AI image generation in static ads. ~$0.04-0.13/image.",
    docsUrl: "https://aistudio.google.com/apikey",
    keys: ["GEMINI_API_KEY"] as SettingKey[],
  },
  {
    name: "Nextdoor",
    description: "Direct Nextdoor Ads API integration for local advertising.",
    docsUrl: "https://developer.nextdoor.com",
    keys: ["NEXTDOOR_API_TOKEN", "NEXTDOOR_ADVERTISER_ID"] as SettingKey[],
  },
];

/**
 * Get a setting value. Checks DB first, falls back to env var.
 */
export async function getSetting(key: SettingKey): Promise<string> {
  try {
    const setting = await prisma.setting.findUnique({ where: { key } });
    if (setting?.value) return setting.value;
  } catch {
    // DB not available, fall through to env
  }

  const config = SETTINGS_KEYS[key];
  return process.env[config.envVar] || "";
}

/**
 * Get all settings as a map.
 */
export async function getAllSettings(): Promise<Record<string, string>> {
  const result: Record<string, string> = {};

  for (const [key, config] of Object.entries(SETTINGS_KEYS)) {
    try {
      const setting = await prisma.setting.findUnique({ where: { key } });
      result[key] = setting?.value || process.env[config.envVar] || "";
    } catch {
      result[key] = process.env[config.envVar] || "";
    }
  }

  return result;
}

/**
 * Save a setting to the database.
 */
export async function saveSetting(key: SettingKey, value: string) {
  await prisma.setting.upsert({
    where: { key },
    update: { value },
    create: { key, value },
  });
}

export type IntegrationName = "claude" | "postiz" | "tavily" | "gemini" | "nextdoor";
export type IntegrationStatus = { connected: boolean; error?: string };

function errorMessage(e: unknown): string {
  if (e instanceof Error) {
    if (e.name === "TimeoutError" || e.name === "AbortError") return "Timed out";
    return e.message;
  }
  return "Connection failed";
}

/**
 * Live-test a single integration by making a real API call.
 */
export async function checkIntegration(name: IntegrationName): Promise<IntegrationStatus> {
  const settings = await getAllSettings();

  switch (name) {
    case "claude": {
      // OAuth token — validate by hitting the messages API with a 1-token call.
      if (!settings.CLAUDE_CODE_OAUTH_TOKEN) return { connected: false, error: "Not configured" };
      try {
        const res = await fetch("https://api.anthropic.com/v1/messages", {
          method: "POST",
          headers: {
            "Content-Type": "application/json",
            "anthropic-version": "2023-06-01",
            "anthropic-beta": "oauth-2025-04-20",
            Authorization: `Bearer ${settings.CLAUDE_CODE_OAUTH_TOKEN}`,
          },
          body: JSON.stringify({
            model: "claude-haiku-4-5-20251001",
            max_tokens: 1,
            messages: [{ role: "user", content: "." }],
          }),
          signal: AbortSignal.timeout(10000),
        });
        if (res.ok) return { connected: true };
        if (res.status === 401) return { connected: false, error: "Token expired or invalid" };
        return { connected: false, error: `HTTP ${res.status}` };
      } catch (e) {
        return { connected: false, error: errorMessage(e) };
      }
    }

    case "postiz": {
      if (!settings.POSTIZ_URL || !settings.POSTIZ_API_KEY) return { connected: false, error: "Not configured" };
      try {
        const res = await fetch(`${settings.POSTIZ_URL}/public/v1/integrations`, {
          headers: { Authorization: settings.POSTIZ_API_KEY },
          signal: AbortSignal.timeout(5000),
        });
        if (res.ok) return { connected: true };
        return { connected: false, error: `HTTP ${res.status}` };
      } catch (e) {
        return { connected: false, error: errorMessage(e) };
      }
    }

    case "tavily": {
      if (!settings.TAVILY_API_KEY) return { connected: false, error: "Not configured" };
      try {
        const res = await fetch("https://api.tavily.com/search", {
          method: "POST",
          headers: { "Content-Type": "application/json" },
          body: JSON.stringify({
            api_key: settings.TAVILY_API_KEY,
            query: "ping",
            max_results: 1,
          }),
          signal: AbortSignal.timeout(8000),
        });
        if (res.ok) return { connected: true };
        if (res.status === 401 || res.status === 403) return { connected: false, error: "Invalid API key" };
        return { connected: false, error: `HTTP ${res.status}` };
      } catch (e) {
        return { connected: false, error: errorMessage(e) };
      }
    }

    case "gemini": {
      if (!settings.GEMINI_API_KEY) return { connected: false, error: "Not configured" };
      try {
        const res = await fetch(
          `https://generativelanguage.googleapis.com/v1beta/models?key=${encodeURIComponent(settings.GEMINI_API_KEY)}`,
          { signal: AbortSignal.timeout(8000) }
        );
        if (res.ok) return { connected: true };
        if (res.status === 400 || res.status === 403) return { connected: false, error: "Invalid API key" };
        return { connected: false, error: `HTTP ${res.status}` };
      } catch (e) {
        return { connected: false, error: errorMessage(e) };
      }
    }

    case "nextdoor": {
      if (!settings.NEXTDOOR_API_TOKEN || !settings.NEXTDOOR_ADVERTISER_ID) {
        return { connected: false, error: "Not configured" };
      }
      try {
        const res = await fetch(
          `https://api.nextdoor.com/v1/advertiser/${encodeURIComponent(settings.NEXTDOOR_ADVERTISER_ID)}`,
          {
            headers: { Authorization: `Bearer ${settings.NEXTDOOR_API_TOKEN}` },
            signal: AbortSignal.timeout(8000),
          }
        );
        if (res.ok) return { connected: true };
        if (res.status === 401 || res.status === 403) return { connected: false, error: "Token expired or invalid" };
        if (res.status === 404) return { connected: false, error: "Advertiser ID not found" };
        return { connected: false, error: `HTTP ${res.status}` };
      } catch (e) {
        return { connected: false, error: errorMessage(e) };
      }
    }
  }
}

const ALL_INTEGRATIONS: IntegrationName[] = ["claude", "postiz", "tavily", "gemini", "nextdoor"];

/**
 * Check connectivity status for every integration in parallel.
 */
export async function checkIntegrationStatus(): Promise<Record<string, IntegrationStatus>> {
  const results = await Promise.all(
    ALL_INTEGRATIONS.map(async (name) => [name, await checkIntegration(name)] as const)
  );
  return Object.fromEntries(results);
}