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WalkFilesOnBackupHDD/54 53_aktualizovanýspolemhotovo.py

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+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+import pymysql
+import hashlib
+import posixpath
+import unicodedata
+import time
+from pymysql.err import IntegrityError
+
+HOST_TO_FIX = "tower1"
+BATCH_FETCH = 5000
+COMMIT_EVERY = 2000
+
+DB_CONFIG = {
+    "host": "192.168.1.50",
+    "port": 3306,
+    "user": "root",
+    "password": "Vlado9674+",
+    "database": "torrents",
+    "charset": "utf8mb4",
+    "autocommit": False,
+}
+
+def canonical_path(path_str: str) -> str:
+    path_str = path_str.replace("\\", "/")
+    path_str = posixpath.normpath(path_str)
+    path_str = unicodedata.normalize("NFC", path_str)
+    return path_str
+
+def md5_bytes(path_str: str) -> bytes:
+    return hashlib.md5(path_str.encode("utf-8")).digest()
+
+def main():
+
+    print("🚀 PATH NORMALIZATION WITH TEMP FLAG")
+
+    db_read = pymysql.connect(**DB_CONFIG)
+    db_write = pymysql.connect(**DB_CONFIG)
+
+    read_cur = db_read.cursor(pymysql.cursors.SSCursor)
+    write_cur = db_write.cursor()
+
+    read_cur.execute("""
+        SELECT id, full_path, path_hash
+        FROM file_md5_index
+        WHERE host_name=%s
+          AND path_corrected=0
+    """, (HOST_TO_FIX,))
+
+    total = updated = skipped = deleted = 0
+    pending_commit = 0
+
+    while True:
+
+        rows = read_cur.fetchmany(BATCH_FETCH)
+        if not rows:
+            break
+
+        for rec_id, full_path, stored_hash in rows:
+
+            total += 1
+
+            new_path = canonical_path(full_path)
+            new_hash = md5_bytes(new_path)
+
+            try:
+
+                # už je canonical → jen označit
+                if new_path == full_path and new_hash == stored_hash:
+
+                    write_cur.execute("""
+                        UPDATE file_md5_index
+                        SET path_corrected=1
+                        WHERE id=%s
+                    """, (rec_id,))
+
+                    skipped += 1
+
+                else:
+
+                    write_cur.execute("""
+                        UPDATE file_md5_index
+                        SET full_path=%s,
+                            path_hash=%s,
+                            path_corrected=1
+                        WHERE id=%s
+                    """, (new_path, new_hash, rec_id))
+
+                    updated += 1
+
+            except IntegrityError as e:
+
+                # duplicate canonical path → smazat
+                if e.args[0] == 1062:
+                    write_cur.execute(
+                        "DELETE FROM file_md5_index WHERE id=%s",
+                        (rec_id,)
+                    )
+                    deleted += 1
+                else:
+                    raise
+
+            pending_commit += 1
+
+            if pending_commit >= COMMIT_EVERY:
+                db_write.commit()
+                pending_commit = 0
+
+        print(f"Checked {total:,} | Updated {updated:,} | Skipped {skipped:,} | Deleted {deleted:,}")
+
+    if pending_commit:
+        db_write.commit()
+
+    read_cur.close()
+    write_cur.close()
+    db_read.close()
+    db_write.close()
+
+    print("✅ FINISHED")
+
+if __name__ == "__main__":
+    main()