"""DaRi — EN↔KO Technical Translation API | 다리(bridge) between languages"""
import gradio as gr
import requests

API_URL = "http://168.107.54.158:8000"
API_KEY = "kt_b22b7beb939da8b0e963679413b5b663"
HEADERS = {"X-API-Key": API_KEY, "Content-Type": "application/json"}


def translate(text, direction):
    src = "en" if direction == "EN → KO" else "ko"
    tgt = "ko" if direction == "EN → KO" else "en"
    try:
        r = requests.post(f"{API_URL}/v1/translate", json={
            "text": text, "source_lang": src, "target_lang": tgt, "use_tm": True
        }, headers=HEADERS, timeout=15)
        data = r.json()
        translation = data.get("translation") or ""
        suggestions = data.get("tm_suggestions", [])
        tm_text = ""
        for s in suggestions[:3]:
            sim = s.get("similarity", 0)
            tm_text += f"**[{sim:.0%}]** {s['source']}\n→ {s['target']}\n\n"
        if not translation and tm_text:
            translation = suggestions[0]["target"] if suggestions else "매칭 없음"
        return translation or "매칭 없음 (MT 모델 준비 중)", tm_text or "매칭 없음"
    except Exception as e:
        return f"오류: {e}", ""


def glossary(term):
    try:
        r = requests.get(f"{API_URL}/v1/glossary", params={"term": term}, headers=HEADERS, timeout=10)
        results = r.json().get("results", [])
        if not results:
            return "결과 없음"
        return "\n".join(f"**{g['source']}** → {g['target']} `{g.get('domain','')}`" for g in results[:10])
    except Exception as e:
        return f"오류: {e}"


def quality(source, translation):
    try:
        r = requests.post(f"{API_URL}/v1/quality", json={
            "source": source, "translation": translation
        }, headers=HEADERS, timeout=5)
        m = r.json().get("metrics", {})
        score = m.get("quality_score", "N/A")
        emoji = "🟢" if score == 1 else "🟡" if score >= 0.7 else "🔴"
        return f"""{emoji} **품질 점수**: {score}
📏 **길이 비율**: {m.get('length_ratio', 'N/A')}
🔍 **빈 번역**: {'예 ⚠️' if m.get('empty') else '아니오 ✅'}
📋 **소스 복사**: {'감지 ⚠️' if m.get('copy_detected') else '정상 ✅'}"""
    except Exception as e:
        return f"오류: {e}"


def get_api_key(email, name):
    try:
        r = requests.post(f"{API_URL}/v1/auth/token", json={"email": email, "name": name}, timeout=5)
        data = r.json()
        key = data.get("api_key", "")
        return f"""✅ **API Key**: `{key}`

**사용법**:
```bash
curl -X POST {API_URL}/v1/translate \\
  -H "X-API-Key: {key}" \\
  -H "Content-Type: application/json" \\
  -d '{{"text":"patent application","source_lang":"en","target_lang":"ko"}}'
```

무료 플랜: 월 50,000자 | [API 문서]({API_URL}/docs)"""
    except Exception as e:
        return f"오류: {e}"


CSS = """
.gradio-container {max-width: 960px !important}
h1 {background: linear-gradient(90deg, #00d2ff, #3a7bd5); -webkit-background-clip: text; -webkit-text-fill-color: transparent}
"""

with gr.Blocks(title="DaRi — EN↔KO Translation API", theme=gr.themes.Soft(), css=CSS) as demo:
    gr.Markdown("""
    # DaRi — 다리
    ### EN↔KO Technical Translation API
    
    **62.9M** parallel pairs · **844K** glossary terms · Patent · Medical · IT · Legal · ESG
    """)
    
    with gr.Tab("🔤 번역"):
        direction = gr.Radio(["EN → KO", "KO → EN"], value="EN → KO", label="방향")
        input_text = gr.Textbox(label="입력", lines=3, placeholder="The device shall comply with FDA regulations.")
        translate_btn = gr.Button("번역", variant="primary")
        output_text = gr.Textbox(label="결과", lines=3)
        tm_output = gr.Markdown(label="Translation Memory 매칭")
        translate_btn.click(translate, [input_text, direction], [output_text, tm_output])
    
    with gr.Tab("📖 용어집"):
        term_input = gr.Textbox(label="검색어", placeholder="patent, surgery, device...")
        term_btn = gr.Button("검색", variant="primary")
        term_output = gr.Markdown()
        term_btn.click(glossary, term_input, term_output)
    
    with gr.Tab("✅ 품질 평가"):
        with gr.Row():
            qa_source = gr.Textbox(label="원문", lines=2, placeholder="medical device")
            qa_trans = gr.Textbox(label="번역", lines=2, placeholder="의료기기")
        qa_btn = gr.Button("평가", variant="primary")
        qa_output = gr.Markdown()
        qa_btn.click(quality, [qa_source, qa_trans], qa_output)
    
    with gr.Tab("🔑 API Key"):
        gr.Markdown("무료 API 키를 발급받으세요. 월 50,000자까지 무료입니다.")
        with gr.Row():
            key_email = gr.Textbox(label="이메일")
            key_name = gr.Textbox(label="이름")
        key_btn = gr.Button("발급", variant="primary")
        key_output = gr.Markdown()
        key_btn.click(get_api_key, [key_email, key_name], key_output)
    
    gr.Markdown(f"""
    ---
    **DaRi** © 2026 | [API Docs]({API_URL}/docs) | [Contact](mailto:dogdoh1338@icloud.com)
    
    *DaRi(다리) = Bridge between EN↔KO. Powered by 63M parallel corpus.*
    """)

demo.launch()