"use client";

import { useState, useEffect } from "react";

interface EnvVars {
  OPENAI_API_KEY: string;
  OPENAI_BASE_URL: string;
  OPENAI_TTS_API_KEY: string;
  OPENAI_TTS_BASE_URL: string;
  OPENAI_TTS_MODEL: string;
  FISH_AUDIO_API_KEY: string;
  MINIMAX_API_KEY: string;
  MINIMAX_GROUP_ID: string;
  ELEVENLABS_API_KEY: string;
  OSS_REGION: string;
  OSS_BUCKET: string;
  OSS_ACCESS_KEY_ID: string;
  OSS_ACCESS_KEY_SECRET: string;
  OSS_PUBLIC_DOMAIN: string;
  FEISHU_WEBHOOK_URL: string;
  FEISHU_WEBHOOK_SECRET: string;
}

const DEFAULT_ENV: EnvVars = {
  OPENAI_API_KEY: "",
  OPENAI_BASE_URL: "https://api.openai.com/v1",
  OPENAI_TTS_API_KEY: "",
  OPENAI_TTS_BASE_URL: "https://new-api.corp.shuidi.tech/v1",
  OPENAI_TTS_MODEL: "seed-tts-1.1",
  FISH_AUDIO_API_KEY: "",
  MINIMAX_API_KEY: "",
  MINIMAX_GROUP_ID: "",
  ELEVENLABS_API_KEY: "",
  OSS_REGION: "oss-cn-hangzhou",
  OSS_BUCKET: "",
  OSS_ACCESS_KEY_ID: "",
  OSS_ACCESS_KEY_SECRET: "",
  OSS_PUBLIC_DOMAIN: "",
  FEISHU_WEBHOOK_URL: "",
  FEISHU_WEBHOOK_SECRET: "",
};

export default function SettingsPage() {
  const [keys, setKeys] = useState<EnvVars>(DEFAULT_ENV);
  const [loaded, setLoaded] = useState(false);
  const [saving, setSaving] = useState(false);
  const [saved, setSaved] = useState(false);
  const [sources, setSources] = useState<{ name: string; url: string }[]>([]);

  useEffect(() => {
    fetch("/api/settings")
      .then((r) => r.json())
      .then((data) => {
        setKeys((prev) => ({ ...prev, ...data }));
        setLoaded(true);
      })
      .catch(() => setLoaded(true));

    fetch("/api/collect/sources")
      .then((r) => r.json())
      .then((data) => setSources(data.sources ?? []))
      .catch(() => {});
  }, []);

  async function handleSave() {
    setSaving(true);
    try {
      await fetch("/api/settings", {
        method: "POST",
        headers: { "Content-Type": "application/json" },
        body: JSON.stringify(keys),
      });
      setSaved(true);
      setTimeout(() => setSaved(false), 2000);
    } finally {
      setSaving(false);
    }
  }

  if (!loaded) {
    return (
      <div>
        <div className="page-header">
          <h1>Settings</h1>
        </div>
        <div className="card" style={{ padding: 32, textAlign: "center" }}>
          Loading...
        </div>
      </div>
    );
  }

  return (
    <div>
      <div className="page-header">
        <h1>Settings</h1>
        <p>Configure API keys and service endpoints (saved to .env)</p>
      </div>

      <div className="card" style={{ marginBottom: 24 }}>
        <h3 style={{ marginBottom: 20 }}>LLM Configuration</h3>
        <div className="form-group">
          <label>OpenAI API Key</label>
          <input
            className="form-input"
            type="password"
            value={keys.OPENAI_API_KEY}
            onChange={(e) => setKeys({ ...keys, OPENAI_API_KEY: e.target.value })}
            placeholder="sk-..."
          />
        </div>
        <div className="form-group">
          <label>Base URL</label>
          <input
            className="form-input"
            value={keys.OPENAI_BASE_URL}
            onChange={(e) => setKeys({ ...keys, OPENAI_BASE_URL: e.target.value })}
            placeholder="https://api.openai.com/v1"
          />
          <div style={{ fontSize: 12, color: "var(--text-muted)", marginTop: 4 }}>
            OpenAI-compatible endpoints (DeepSeek, Qwen, etc.)
          </div>
        </div>
      </div>

      <div className="card" style={{ marginBottom: 24 }}>
        <h3 style={{ marginBottom: 20 }}>TTS Providers</h3>

        <div style={{ marginBottom: 20, paddingBottom: 20, borderBottom: "1px solid var(--border)" }}>
          <div style={{ fontSize: 14, fontWeight: 600, marginBottom: 12, color: "#3b82f6" }}>
            OpenAI TTS (Seed TTS) — Default
          </div>
          <div className="form-group">
            <label>API Key</label>
            <input
              className="form-input"
              type="password"
              value={keys.OPENAI_TTS_API_KEY}
              onChange={(e) => setKeys({ ...keys, OPENAI_TTS_API_KEY: e.target.value })}
            />
          </div>
          <div className="form-group">
            <label>Base URL</label>
            <input
              className="form-input"
              value={keys.OPENAI_TTS_BASE_URL}
              onChange={(e) => setKeys({ ...keys, OPENAI_TTS_BASE_URL: e.target.value })}
            />
          </div>
          <div className="form-group">
            <label>Model</label>
            <input
              className="form-input"
              value={keys.OPENAI_TTS_MODEL}
              onChange={(e) => setKeys({ ...keys, OPENAI_TTS_MODEL: e.target.value })}
              placeholder="seed-tts-1.1"
            />
          </div>
        </div>

        <div style={{ marginBottom: 20, paddingBottom: 20, borderBottom: "1px solid var(--border)" }}>
          <div style={{ fontSize: 14, fontWeight: 600, marginBottom: 12, color: "#10b981" }}>
            Fish Audio
          </div>
          <div className="form-group">
            <label>API Key</label>
            <input
              className="form-input"
              type="password"
              value={keys.FISH_AUDIO_API_KEY}
              onChange={(e) => setKeys({ ...keys, FISH_AUDIO_API_KEY: e.target.value })}
            />
          </div>
        </div>

        <div style={{ marginBottom: 20, paddingBottom: 20, borderBottom: "1px solid var(--border)" }}>
          <div style={{ fontSize: 14, fontWeight: 600, marginBottom: 12, color: "#0d9488" }}>
            MiniMax
          </div>
          <div className="form-group">
            <label>API Key</label>
            <input
              className="form-input"
              type="password"
              value={keys.MINIMAX_API_KEY}
              onChange={(e) => setKeys({ ...keys, MINIMAX_API_KEY: e.target.value })}
            />
          </div>
          <div className="form-group">
            <label>Group ID</label>
            <input
              className="form-input"
              value={keys.MINIMAX_GROUP_ID}
              onChange={(e) => setKeys({ ...keys, MINIMAX_GROUP_ID: e.target.value })}
            />
          </div>
        </div>

        <div>
          <div style={{ fontSize: 14, fontWeight: 600, marginBottom: 12, color: "#9333ea" }}>
            ElevenLabs
          </div>
          <div className="form-group">
            <label>API Key</label>
            <input
              className="form-input"
              type="password"
              value={keys.ELEVENLABS_API_KEY}
              onChange={(e) => setKeys({ ...keys, ELEVENLABS_API_KEY: e.target.value })}
            />
          </div>
        </div>
      </div>

      <div className="card" style={{ marginBottom: 24 }}>
        <h3 style={{ marginBottom: 8 }}>Publish — OSS &amp; Feishu</h3>
        <div style={{ fontSize: 13, color: "var(--text-muted)", marginBottom: 20 }}>
          Rendered videos are uploaded to OSS and results are pushed to a Feishu webhook. Also configurable in <code>config/default.yaml</code>.
        </div>

        <div style={{ marginBottom: 20, paddingBottom: 20, borderBottom: "1px solid var(--border)" }}>
          <div style={{ fontSize: 14, fontWeight: 600, marginBottom: 12, color: "#3b82f6" }}>
            Alibaba Cloud OSS
          </div>
          <div style={{ display: "grid", gridTemplateColumns: "1fr 1fr", gap: 16 }}>
            <div className="form-group">
              <label>Region</label>
              <input
                className="form-input"
                value={keys.OSS_REGION}
                onChange={(e) => setKeys({ ...keys, OSS_REGION: e.target.value })}
                placeholder="oss-cn-hangzhou"
              />
            </div>
            <div className="form-group">
              <label>Bucket</label>
              <input
                className="form-input"
                value={keys.OSS_BUCKET}
                onChange={(e) => setKeys({ ...keys, OSS_BUCKET: e.target.value })}
              />
            </div>
            <div className="form-group">
              <label>Access Key ID</label>
              <input
                className="form-input"
                type="password"
                value={keys.OSS_ACCESS_KEY_ID}
                onChange={(e) => setKeys({ ...keys, OSS_ACCESS_KEY_ID: e.target.value })}
              />
            </div>
            <div className="form-group">
              <label>Access Key Secret</label>
              <input
                className="form-input"
                type="password"
                value={keys.OSS_ACCESS_KEY_SECRET}
                onChange={(e) => setKeys({ ...keys, OSS_ACCESS_KEY_SECRET: e.target.value })}
              />
            </div>
          </div>
          <div className="form-group">
            <label>Public Domain (optional)</label>
            <input
              className="form-input"
              value={keys.OSS_PUBLIC_DOMAIN}
              onChange={(e) => setKeys({ ...keys, OSS_PUBLIC_DOMAIN: e.target.value })}
              placeholder="https://cdn.example.com"
            />
            <div style={{ fontSize: 12, color: "var(--text-muted)", marginTop: 4 }}>
              Base URL used to build resource links (e.g. a CDN). If empty, the bucket default domain is used.
            </div>
          </div>
        </div>

        <div>
          <div style={{ fontSize: 14, fontWeight: 600, marginBottom: 12, color: "#10b981" }}>
            Feishu Webhook
          </div>
          <div className="form-group">
            <label>Webhook URL</label>
            <input
              className="form-input"
              type="password"
              value={keys.FEISHU_WEBHOOK_URL}
              onChange={(e) => setKeys({ ...keys, FEISHU_WEBHOOK_URL: e.target.value })}
              placeholder="https://open.feishu.cn/open-apis/bot/v2/hook/..."
            />
          </div>
          <div className="form-group">
            <label>Signing Secret (optional)</label>
            <input
              className="form-input"
              type="password"
              value={keys.FEISHU_WEBHOOK_SECRET}
              onChange={(e) => setKeys({ ...keys, FEISHU_WEBHOOK_SECRET: e.target.value })}
            />
          </div>
        </div>
      </div>

      <div className="card" style={{ marginBottom: 24 }}>
        <h3 style={{ marginBottom: 20 }}>Data Sources</h3>
        <div style={{ fontSize: 13, color: "var(--text-muted)", marginBottom: 16 }}>
          Configured in <code>config/default.yaml</code>
        </div>
        {sources.length === 0 ? (
          <div style={{ color: "var(--text-muted)", fontSize: 14 }}>No data sources configured.</div>
        ) : (
          <div style={{ display: "grid", gap: 12 }}>
            {sources.map((s) => (
              <div key={s.name} style={{
                padding: "12px 16px",
                background: "var(--bg)",
                borderRadius: 8,
                border: "1px solid var(--border)",
                display: "flex",
                justifyContent: "space-between",
                alignItems: "center",
              }}>
                <div>
                  <div style={{ fontWeight: 600, marginBottom: 4 }}>{s.name}</div>
                  <code style={{ fontSize: 12, color: "var(--text-muted)" }}>{s.url}</code>
                </div>
                <span className="badge badge-completed">active</span>
              </div>
            ))}
          </div>
        )}
      </div>

      <div style={{ display: "flex", alignItems: "center", gap: 16 }}>
        <button className="btn btn-primary" onClick={handleSave} disabled={saving}>
          {saving ? "Saving..." : "Save to .env"}
        </button>
        {saved && <span style={{ color: "var(--success)", fontSize: 14 }}>Saved! Restart services to apply.</span>}
      </div>
    </div>
  );
}