Delete database directory
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Rekushi authored and GitHub committed
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from __future__ import annotations
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import atexit
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import os
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try:
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from twisted.internet import reactor
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except ImportError: # Allows the database module to be used/tested without Twisted installed.
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reactor = None
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from Hatenatools import TMB
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class Database:
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"""Plain-text Flipnote database used by the original server.
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This backend is intentionally single-process, matching the original design.
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"""
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def __init__(self):
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newest_path = "database/new_flipnotes.dat"
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if os.path.exists(newest_path):
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with open(newest_path, "r", encoding="utf-8", newline="") as f:
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raw = f.read()
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else:
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raw = ""
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self.Newest = [tuple(line.split("\t")) for line in raw.splitlines() if line] if raw else []
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self.Creator = {}
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self.new = False
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self.Views = 0
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self.Stars = 0
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self.Downloads = 0
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if reactor is not None:
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reactor.callLater(60 * 3, self.flusher)
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atexit.register(self.write)
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def flusher(self):
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if reactor is not None:
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reactor.callLater(60 * 3, self.flusher)
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self.write()
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def write(self):
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if self.new:
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if len(self.Newest) > 5000:
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self.Newest = self.Newest[:5000]
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with open("database/new_flipnotes.dat", "w", encoding="utf-8", newline="") as f:
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f.write("\n".join("\t".join(map(str, row)) for row in self.Newest))
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self.new = False
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for creator_id in list(self.Creator.keys()):
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creator_dir = os.path.join("database", "Creators", creator_id)
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os.makedirs(creator_dir, exist_ok=True)
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with open(os.path.join(creator_dir, "flipnotes.dat"), "w", encoding="utf-8", newline="") as f:
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f.write("\n".join("\t".join(map(str, row)) for row in self.Creator[creator_id]))
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del self.Creator[creator_id]
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def CreatorExists(self, CreatorID):
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return os.path.exists(os.path.join("database", "Creators", CreatorID)) or CreatorID in self.Creator
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def FlipnoteExists(self, CreatorID, filename):
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return os.path.exists(self.FlipnotePath(CreatorID, filename))
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def GetCreator(self, CreatorID, Store=False):
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if CreatorID in self.Creator:
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return self.Creator[CreatorID]
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creator_dir = os.path.join("database", "Creators", CreatorID)
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if not os.path.exists(creator_dir):
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return None
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with open(os.path.join(creator_dir, "flipnotes.dat"), "r", encoding="utf-8", newline="") as f:
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raw = f.read()
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ret = [line.split("\t") for line in raw.splitlines() if line]
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# Current format:
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# filename, views, stars, green, red, blue, purple, channel, downloads
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for row in ret:
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filename = row[0]
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defaults = (filename, 0, 0, 0, 0, 0, 0, "", 0)
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while len(row) < len(defaults):
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row.append(defaults[len(row)])
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if Store:
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self.Creator[CreatorID] = ret
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return ret
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def GetFlipnote(self, CreatorID, filename, Store=False):
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for row in self.GetCreator(CreatorID, Store) or []:
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if row[0] == filename:
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return row
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return False
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def GetFlipnotePPM(self, CreatorID, filename):
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with open(self.FlipnotePath(CreatorID, filename), "rb") as f:
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return f.read()
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def GetFlipnoteTMB(self, CreatorID, filename):
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with open(self.FlipnotePath(CreatorID, filename), "rb") as f:
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return f.read(0x6A0)
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def AddFlipnote(self, content, Channel=""):
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content = bytes(content)
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tmb = TMB().Read(content)
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if not tmb:
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return False
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CreatorID = tmb.EditorAuthorID
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filename = tmb.CurrentFilename[:-4]
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if self.FlipnoteExists(CreatorID, filename):
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return False
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self.new = True
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self.Newest.insert(0, (CreatorID, filename))
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if not self.GetCreator(CreatorID, True):
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self.Creator[CreatorID] = [[filename, 0, 0, 0, 0, 0, 0, Channel, 0]]
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else:
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self.Creator[CreatorID].append([filename, 0, 0, 0, 0, 0, 0, Channel, 0])
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creator_dir = os.path.join("database", "Creators", CreatorID)
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os.makedirs(creator_dir, exist_ok=True)
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with open(self.FlipnotePath(CreatorID, filename), "wb") as f:
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f.write(content)
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return CreatorID, filename
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def AddView(self, CreatorID, filename):
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for i, flipnote in enumerate(self.GetCreator(CreatorID, True) or []):
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if flipnote[0] == filename:
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self.Creator[CreatorID][i][1] = int(flipnote[1]) + 1
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self.Views += 1
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return True
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return False
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def AddStar(self, CreatorID, filename, amount=1, color="yellow"):
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starindices = {"yellow": 2, "green": 3, "red": 4, "blue": 5, "purple": 6}
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if color not in starindices:
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return False
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for i, flipnote in enumerate(self.GetCreator(CreatorID, True) or []):
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if flipnote[0] == filename:
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idx = starindices[color]
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self.Creator[CreatorID][i][idx] = int(flipnote[idx]) + amount
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self.Stars += 1
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return True
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return False
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def AddDownload(self, CreatorID, filename):
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for i, flipnote in enumerate(self.GetCreator(CreatorID, True) or []):
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if flipnote[0] == filename:
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self.Creator[CreatorID][i][8] = int(flipnote[8]) + 1
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self.Downloads += 1
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return True
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return False
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def FlipnotePath(self, CreatorID, filename):
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return os.path.join("database", "Creators", CreatorID, filename + ".ppm")
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Database = Database()
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@@ -1 +0,0 @@
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913304C0CC74CC1F 74CC1F_0D3AA40F2B3A0_000
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