minor and major reworks: rename swb to SRU, add a test for pdf parsing

major: rework mail to send mail as plaintext instead of html, preventing the bleed-in of html text

src/backend/database.py

@@ -30,10 +30,9 @@ from src.backend.db import (
 from src.errors import AppPresentError, NoResultError
 from src.logic import ELSA, Apparat, ApparatData, BookData, Prof
 from src.logic.constants import SEMAP_MEDIA_ACCOUNTS
+from src.logic.semester import Semester
 from src.utils.blob import create_blob
 
-from .semester import Semester
-
 log = loguru.logger
 log.remove()
 log.add(sys.stdout, level="INFO")
@@ -1873,7 +1872,7 @@ class Database:
         Returns:
             list[tuple]: A list of tuples containing the new editions data
         """
-        query = "SELECT * FROM neweditions WHERE for_apparat=?"
+        query = "SELECT * FROM neweditions WHERE for_apparat=? AND ordered=0"
         results = self.query_db(query, (apparat_id,))
         res = []
         for result in results:
@@ -1887,9 +1886,25 @@ class Database:
         query = "UPDATE neweditions SET ordered=1 WHERE id=?"
         self.query_db(query, (newBook_id,))
 
+    def getBooksWithNewEditions(self, app_id) -> List[BookData]:
+        # select all bookdata from media, based on the old_edition_id in neweditions where for_apparat = app_id; also get the new_edition bookdata
+
+        query = "SELECT m.bookdata, new_bookdata FROM media m JOIN neweditions n ON m.id = n.old_edition_id WHERE n.for_apparat = ?"
+        results = self.query_db(query, (app_id,))
+        # store results in tuple old,new
+        res = []
+        for result in results:
+            oldedition = BookData().from_string(result[0])
+            newedition = BookData().from_string(result[1])
+            res.append((oldedition, newedition))
+        return res
+
     def getNewEditionId(self, newBook: BookData):
-        query = "SELECT id FROM neweditions WHERE new_bookdata=?"
-        params = (newBook.to_dict,)
+        query = "SELECT id FROM neweditions WHERE new_bookdata LIKE ?"
+        args = (
+            newBook.isbn[0] if newBook.isbn and len(newBook.isbn) > 0 else newBook.ppn
+        )
+        params = (f"%{args}%",)
         data = self.query_db(query, params, one=True)
         if data:
             return data[0]
@@ -1897,6 +1912,14 @@ class Database:
             return None
 
     def insertNewEdition(self, newBook: BookData, oldBookId: int, for_apparat: int):
+        # check if new edition already in table, check based on newBook.ppn
+        check_query = "SELECT id FROM neweditions WHERE new_bookdata LIKE ?"
+        check_params = (f"%{newBook.ppn}%",)
+        data = self.query_db(check_query, check_params, one=True)
+        if data:
+            log.info("New edition already in table, skipping insert")
+            return
+
         query = "INSERT INTO neweditions (new_bookdata, old_edition_id, for_apparat) VALUES (?,?,?)"
         params = (newBook.to_dict, oldBookId, for_apparat)