import { useEffect, useState } from "react";
import { Link } from "react-router-dom";
import { api } from "../api";

export default function Settings() {
  const [settings, setSettings] = useState<any>(null);
  const [saved, setSaved] = useState(false);

  useEffect(() => {
    api.getSettings().then(setSettings);
  }, []);

  if (!settings) return null;

  const set = (k: string, v: any) => setSettings({ ...settings, [k]: v });

  const save = async () => {
    await api.updateSettings(settings);
    setSaved(true);
    setTimeout(() => setSaved(false), 2000);
  };

  return (
    <div className="max-w-xl mx-auto py-16 px-4">
      <Link to="/" className="text-sm text-ink/40 hover:text-brass">&larr; Back</Link>
      <h1 className="font-display text-3xl mt-4 mb-8">Settings</h1>

      <div className="card p-6 space-y-4 mb-6">
        <h2 className="eyebrow">Transcription</h2>
        <select className="input w-full" value={settings.whisper_model} onChange={(e) => set("whisper_model", e.target.value)}>
          <option value="tiny">Tiny</option>
          <option value="small">Small</option>
          <option value="medium">Medium</option>
          <option value="large-v3">Large v3</option>
        </select>
        <input className="input w-full" type="password" placeholder="HuggingFace token" value={settings.hf_token} onChange={(e) => set("hf_token", e.target.value)} />
      </div>

      <div className="card p-6 space-y-4 mb-6">
        <h2 className="eyebrow">Summarization</h2>
        <div className="flex gap-3">
          <button className={settings.llm_mode === "ollama" ? "btn-primary" : "btn-secondary"} onClick={() => set("llm_mode", "ollama")}>Local (Ollama)</button>
          <button className={settings.llm_mode === "api" ? "btn-primary" : "btn-secondary"} onClick={() => set("llm_mode", "api")}>Hosted API</button>
        </div>
        {settings.llm_mode === "ollama" ? (
          <>
            <input className="input w-full" value={settings.ollama_host} onChange={(e) => set("ollama_host", e.target.value)} />
            <input className="input w-full" value={settings.ollama_model} onChange={(e) => set("ollama_model", e.target.value)} />
          </>
        ) : (
          <>
            <input className="input w-full" value={settings.api_base_url} onChange={(e) => set("api_base_url", e.target.value)} />
            <input className="input w-full" type="password" value={settings.api_key} onChange={(e) => set("api_key", e.target.value)} />
            <input className="input w-full" value={settings.api_model} onChange={(e) => set("api_model", e.target.value)} />
          </>
        )}
      </div>

      <div className="card p-6 space-y-3 mb-6">
        <h2 className="eyebrow">Campaign context</h2>
        <textarea className="input w-full h-32" value={settings.world_context} onChange={(e) => set("world_context", e.target.value)} placeholder="Paste world context directly..." />
        <input className="input w-full" value={settings.world_context_path} onChange={(e) => set("world_context_path", e.target.value)} placeholder="...or path to a file inside the container" />
      </div>

      <div className="card p-6 space-y-3 mb-6">
        <h2 className="eyebrow">Player recap style</h2>
        <select className="input w-full" value={settings.player_recap_style} onChange={(e) => set("player_recap_style", e.target.value)}>
          <option value="story">Story Recap (previously on…)</option>
          <option value="diary">Dear Diary</option>
          <option value="bullets">Bullet Points</option>
          <option value="custom">Custom Prompt</option>
        </select>
        {settings.player_recap_style === "custom" && (
          <textarea className="input w-full h-32" value={settings.player_recap_custom_prompt} onChange={(e) => set("player_recap_custom_prompt", e.target.value)} placeholder="Write your own final-combine prompt. Use {'{summaries}'} where the chunk summaries should be inserted." />
        )}
      </div>

      <button className="btn-primary" onClick={save}>{saved ? "Saved" : "Save settings"}</button>
    </div>
  );
}