36 lines
1.2 KiB
Python
36 lines
1.2 KiB
Python
import os
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import json
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import shutil
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class Database:
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def __init__(self, file):
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self.database = {}
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self.file = file
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self.backup = file + ".bak"
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if not os.path.exists(file):
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open(self.file, "wt").write("{}")
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def read(self):
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try:
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with open(self.file, "rt") as f:
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self.database = json.loads(f.read())
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except (json.JSONDecodeError, OSError):
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print(f"[db] Failed to read {self.file}, attempting fallback to {self.backup}")
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try:
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with open(self.backup, "rt") as f:
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self.database = json.loads(f.read())
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print(f"[db] Fallback successful, restoring {self.file} from backup")
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shutil.copy2(self.backup, self.file)
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except (json.JSONDecodeError, OSError) as e:
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print(f"[db] Backup read also failed: {e} — starting with empty database")
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self.database = {}
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def write(self):
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if os.path.exists(self.file):
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shutil.copy2(self.file, self.backup)
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with open(self.file, "wt") as f:
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f.write(json.dumps(self.database))
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def database(file):
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return Database(file)
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