rename app ; add new,open,save actions

src/warchron/model/model.py

@@ -0,0 +1,68 @@
+from pathlib import Path
+import json
+import shutil
+
+from warchron.model.player import Player
+
+class Model:
+    def __init__(self):
+        self.players = {}
+
+    def new(self):
+        self.players.clear()
+        # self.wars.clear()
+        # self.campaigns.clear()
+        # self.rounds.clear()
+
+    def load(self, path: Path):
+        self.players.clear()
+        self._load_data(path)
+        
+    def save(self, path: Path):
+        self._save_data(path)
+        
+    def _load_data(self, path: Path):
+        if not path.exists() or path.stat().st_size == 0:
+            return # Start empty
+        try:
+            with open(path, "r", encoding="utf-8") as f:
+                data = json.load(f)
+            for player in data["players"] : 
+                saved_player = Player.fromDict(player["id"], player['name'])
+                self.players[saved_player.id] = saved_player
+            for war in data["wars"]:
+                # placeholder
+                pass    
+        except json.JSONDecodeError:
+            raise RuntimeError("Data file is corrupted")
+
+    def _save_data(self, path: Path):
+        if path.exists():
+            shutil.copy(path, path.with_suffix(".json.bak"))
+        data = {}
+        data['version'] = "1.0"
+        data['players'] = []
+        data['wars'] = []
+        for player in self.players.values():
+            data['players'].append(player.toDict())
+        with open(path, "w", encoding="utf-8") as f:
+            json.dump(data, f, indent=2)
+
+    def add_player(self, name):
+        player = Player(name)
+        self.players[player.id] = player
+        return player
+
+    def get_player(self, id):
+        return self.players[id]
+        
+    def update_player(self, id, name):
+        player = self.get_player(id)
+        player.set_name(name)
+
+    def delete_player(self, id):
+        del self.players[id]
+
+    def get_all_players(self) -> list[Player]:
+        return list(self.players.values())
+