#!/usr/bin/env python3
"""
代碼與文檔一致性檢查工具 - Phase 1.2 成果

功能：檢查 Rust 代碼定義與架構文檔的一致性
核心原則：當設計與實現出現矛盾時，以實際的 Rust 代碼實現為最高權威
"""

import re
from pathlib import Path


def load_code_definitions():
    """加載 Rust 代碼定義"""
    print("🔍 解析 Rust 代碼定義...")

    project_root = Path(__file__).parent.parent
    src_dir = project_root / "src"

    chunk_type_pattern = re.compile(r"pub\s+enum\s+ChunkType\s*\{([^}]+)\}", re.DOTALL)

    for file_path in src_dir.glob("**/*.rs"):
        try:
            with open(file_path, "r", encoding="utf-8") as f:
                content = f.read()

            match = chunk_type_pattern.search(content)
            if match:
                enum_body = match.group(1)
                variants = []
                for line in enum_body.split("\n"):
                    line = line.strip()
                    if line and not line.startswith("//"):
                        variant = line.split(",")[0].strip()
                        if variant:
                            variants.append(variant)

                print(f"📝 找到 ChunkType 定義: {', '.join(variants)}")
                return variants
        except Exception as e:
            print(f"⚠️  解析文件 {file_path} 時出錯: {e}")

    print("❌ 未找到 ChunkType 定義")
    return []


def check_terminology_consistency(implemented_variants):
    """檢查術語一致性"""
    print("\n📝 檢查術語一致性...")

    project_root = Path(__file__).parent.parent
    architecture_dir = project_root / "docs_v1.0" / "ARCHITECTURE"

    # 設計術語集合
    design_terms = {"sentence", "visual", "scene", "summary", "time"}

    # 檢查關鍵文件
    key_files = [
        "ARCHITECTURE_OVERVIEW.md",
        "CHUNKING_ARCHITECTURE.md",
        "DESIGN_IMPLEMENTATION_GAP.md",
    ]

    issues = []

    for filename in key_files:
        file_path = architecture_dir / filename
        if not file_path.exists():
            print(f"  ⚠️  文件不存在: {filename}")
            continue

        try:
            with open(file_path, "r", encoding="utf-8") as f:
                content = f.read()
        except Exception as e:
            print(f"  ❌ 無法讀取文件 {file_path}: {e}")
            continue

        # 檢查設計術語
        for design_term in design_terms:
            if design_term in content.lower():
                needs_implementation_note = design_term in [
                    "visual",
                    "scene",
                    "summary",
                ]

                if needs_implementation_note:
                    # 檢查是否有狀態標記
                    has_status_marker = any(
                        marker in content
                        for marker in [
                            "✅",
                            "⚠️",
                            "❌",
                            "🔄",
                            "已實現",
                            "未實現",
                            "部分實現",
                            "概念調整",
                        ]
                    )

                    if not has_status_marker:
                        # 確定對應的實現術語
                        impl_term = get_implementation_term(design_term)
                        status = get_status(impl_term)

                        issues.append(
                            {
                                "file": str(file_path.relative_to(project_root)),
                                "type": "terminology",
                                "description": f"設計術語 '{design_term}' 缺少實現狀態說明",
                                "severity": "warning",
                                "suggested_fix": f"添加狀態說明，例如: '{status}' 或參考 TERMINOLOGY_MAPPING.md",
                            }
                        )

        # 檢查實現術語是否正確
        for impl_term in implemented_variants:
            if impl_term in content:
                expected_status = get_status(impl_term)
                if expected_status and expected_status not in content:
                    issues.append(
                        {
                            "file": str(file_path.relative_to(project_root)),
                            "type": "terminology",
                            "description": f"實現術語 '{impl_term}' 缺少正確的狀態標記",
                            "severity": "info",
                            "suggested_fix": f"添加狀態標記: {expected_status}",
                        }
                    )

    return issues


def get_implementation_term(design_term):
    """根據設計術語獲取對應的實現術語"""
    mapping = {
        "sentence": "Sentence",
        "visual": "",  # 未實現
        "scene": "Cut",
        "summary": "Story",
        "time": "TimeBased",
    }
    return mapping.get(design_term, "")


def get_status(impl_term):
    """獲取實現術語的狀態"""
    status_map = {
        "TimeBased": "✅ 已實現",
        "Sentence": "✅ 已實現",
        "Cut": "⚠️ 部分實現",
        "Trace": "✅ 已實現",
        "Story": "⚠️ 概念調整",
        "visual": "❌ 未實現",
    }
    return status_map.get(impl_term, "❓ 狀態未知")


def main():
    print("🚀 開始代碼與文檔一致性檢查 - Phase 1.2")
    print("=" * 50)

    # 1. 加載代碼定義
    implemented_variants = load_code_definitions()
    if not implemented_variants:
        print("❌ 無法繼續檢查，請先確保 Rust 代碼正常編譯")
        return

    print(f"✅ 加載了 {len(implemented_variants)} 個代碼定義")

    # 2. 檢查術語一致性
    issues = check_terminology_consistency(implemented_variants)

    # 3. 顯示結果
    print("\n📊 檢查完成:")
    print(f"  發現問題數: {len(issues)}")

    if issues:
        print("\n🔍 詳細問題列表:")
        for issue in issues:
            print(f"  [{issue['severity'].upper()}] {issue['file']}")
            print(f"    描述: {issue['description']}")
            print(f"    建議: {issue['suggested_fix']}")
            print()

    print("=" * 50)
    print("✅ 檢查完成。請參考 TERMINOLOGY_MAPPING.md 進行修復。")


if __name__ == "__main__":
    main()