Added find backup files and a backup class

tibi_hardlinks/filename_creation.py

@@ -2,8 +2,8 @@ import datetime
 from pathlib import Path
 import os
 
-
 from tibi_hardlinks.exceptions import ConfigurationException
+from tibi_hardlinks.backup_parser import read_backup_properties
 
 HEIRACHY = (
     "sys_ro.product.model",
@@ -34,3 +34,29 @@ def create_backup_directory_name(backup_info, time_format="%Y-%m-%d_%H-%M-%S"):
     return backup_directory_name
 
 
+def find_backup_data(backup_filepath: Path, backup_info):
+    # find the path of the *.apk, *.properties, and *.tar(.gz) corresponding to backup_filepath
+    backup_root = backup_filepath.parent
+    apk_hash = backup_info["app_apk_md5"]
+    apk_file = filter(
+        lambda apk_file: apk_hash in apk_file.name, backup_root.glob("*.apk*")
+    )
+    related_files = list(backup_root.glob(backup_filepath.stem + "*"))
+    if len(related_files) > 2:
+        raise Exception
+    for filename in related_files:
+        if ".tar" in filename.name:
+            tar_file = filename
+    property_file = backup_filepath
+    return property_file, apk_file, tar_file
+
+
+class Backup:
+    def __init__(self, property_file: Path):
+        self.property_file = property_file
+        self.backup_info = read_backup_properties(property_file)
+        self.related_files = find_backup_data(self.backup_filepath, self.backup_info)
+
+    def hardlink_to(self, dest):
+        for filepath in self.related_files:
+            filepath.link_to(dest)