1 files changed, 58 insertions, 30 deletions

diff --git a/src/ipm/models/index.py b/src/ipm/models/index.py
index 4c9c38b..607f7a2 100644
--- a/src/ipm/models/index.py
+++ b/src/ipm/models/index.py
@@ -1,74 +1,102 @@
 from pathlib import Path
+from typing import Any, List, Literal, Optional
 from ipm.const import INDEX_PATH
 from ipm.exceptions import LockLoadFailed
 from ipm.models.lock import PackageLock
+from ipm.typing import Dict
 
-import tomlkit
 import requests
 import tempfile
 import shutil
+import json
 
 
 class Yggdrasil:
-    """此对象内所有方法均为示例方法，可以按照需求和开发习惯进行微调"""
-
-    def __init__(self, index: str) -> None:
+    def __init__(self, index: str, uuid: str) -> None:
         self.index = index.rstrip("/") + "/"
+        self._source_path = INDEX_PATH / uuid
         self._data = self.read()
 
-    def read(self) -> tomlkit.TOMLDocument:
-        """示例方法，读取一个本地的世界树索引文件，这里使用toml只是作为样例"""
+    def read(self) -> Dict:
         if not self._source_path.exists():
             self._source_path.parent.mkdir(parents=True, exist_ok=True)
-            return tomlkit.document()
-        return tomlkit.load(self._source_path.open("r", encoding="utf-8"))
+            return {}
+        return json.load(self._source_path.open("r", encoding="utf-8"))
 
     def dump(self) -> None:
-        """示例方法，将修改保存在本地"""
-        tomlkit.dump(self._data, self._source_path.open("w", encoding="utf-8"))
+        json.dump(self._data, self._source_path.open("w", encoding="utf-8"))
+
+    @staticmethod
+    def try_loads(path: Path) -> Dict | Literal[False]:
+        try:
+            return json.loads(path.read_text(encoding="utf-8"))
+        except Exception as e:
+            print(e)
+            return False
 
     @staticmethod
     def check(source_path: Path):
         """检查一个索引文件是否合法"""
-        raise NotImplementedError
+        if not (packages := Yggdrasil.try_loads(source_path)):
+            return False
+        return packages
 
-    def sync(self):
-        """示例方法，下载或同步索引文件"""
+    @staticmethod
+    def init(index: str) -> "Yggdrasil":
         lock_bytes = requests.get(
-            self.index + "infini.lock"
-        ).content  # 索引文件地址，这里的lock仅作示例
+            index.rstrip("/") + "/" + "json/packages.json"
+        ).content
 
         temp_dir = tempfile.TemporaryDirectory()
         temp_path = Path(temp_dir.name).resolve()
-        temp_lock_path = temp_path / "infini.lock"  # 本地索引文件地址，这里的lock仅作示例
+        temp_lock_path = temp_path / "packages.json"
 
         temp_lock_file = temp_lock_path.open("wb")
         temp_lock_file.write(lock_bytes)
         temp_lock_file.close()
 
-        Yggdrasil.check(temp_lock_path)  # 检查索引文件合法性
-
-        temp_lock = PackageLock(temp_lock_path)
+        if not (packages := Yggdrasil.check(temp_lock_path)):
+            raise LockLoadFailed(f"地址 [red]{index}[/] 不是合法的世界树服务器.")
 
-        if "uuid" not in temp_lock.metadata.keys():
+        if "uuid" not in packages["metadata"].keys():
             temp_dir.cleanup()
-            raise LockLoadFailed(f"地址[{self.index}]不是合法的世界树服务器.")
+            raise LockLoadFailed(f"地址[{index}]不是合法的世界树服务器.")
+        uuid = packages["metadata"]["uuid"]
 
-        self._source_path = INDEX_PATH / temp_lock.metadata["uuid"]
-        self._source_path.mkdir(parents=True, exist_ok=True)
-
-        shutil.copy2(temp_lock_path, self._source_path)
+        source_path = INDEX_PATH / uuid
+        shutil.copy2(temp_lock_path, source_path)
         temp_dir.cleanup()
 
-    def get_url(self, name: str, version: str) -> str:
+        lock = PackageLock()
+        lock.update_index(index, uuid, str(source_path))
+        return Yggdrasil(index, uuid)
+
+    def sync(self):
+        yggdrasil = Yggdrasil.init(self.index)
+        self._source_path = yggdrasil._source_path
+        self._data = yggdrasil._data
+
+    def get_url(self, name: str, version: str) -> Optional[str]:
         """从本地读取规则包下载链接"""
-        raise NotImplementedError
+        if name not in self.packages:
+            return None
+        for distribution in self.packages[name]["distributions"]:
+            if distribution["version"] == version:
+                return distribution["download_url"]
 
-    def get_hash(self, name: str, version: str) -> str:
+    def get_hash(self, name: str, version: str) -> Optional[str]:
         """从本地获取规则包哈希值"""
-        raise NotImplementedError
+        if name not in self.packages:
+            return None
+        for distribution in self.packages[name]["distributions"]:
+            if distribution["version"] == version:
+                return distribution["hash"]
 
     @property
     def uuid(self) -> str:
         """世界树唯一标识"""
-        raise NotImplementedError
+        return self._data["metadata"]["uuid"]
+
+    @property
+    def packages(self) -> Dict[str, Any]:
+        return self._data["packages"]