db: Create a LibraryTable and Library object

Signed-off-by: Anna Schumaker <Anna@NoWheyCreamery.com>

db/__init__.py

@@ -17,9 +17,10 @@ from . import disc
 from . import genre
 from . import decade
 from . import year
+from . import library
 
 def reset():
-    mods = [ artist, album, disc, genre, decade, year ]
+    mods = [ artist, album, disc, genre, decade, year, library ]
 
     for mod in mods: mod.Table.drop()
     for mod in mods: mod.Table.do_create()

db/library.py

@@ -0,0 +1,64 @@
+# Copyright 2021 (c) Anna Schumaker.
+#
+# Table: libraries
+# +-----------+------+---------+
+# | libraryid | path | enabled |
+# +-----------+------+---------+
+import pathlib
+from gi.repository import GObject
+from . import commit
+from . import execute
+from . import objects
+
+class Library(objects.Row):
+    def __lt__(self, rhs): return self.path < rhs.path
+    def __gt__(self, rhs): return self.path > rhs.path
+    def __str__(self): return str(self.path)
+
+    def do_get_column(self, column):
+        return execute(f"SELECT {column} FROM libraries "
+                        "WHERE libraryid=?", [ self.rowid ])
+
+    @GObject.Property
+    def path(self):
+        return pathlib.Path(self.get_column("path"))
+
+    @GObject.Property(type=bool,default=False)
+    def enabled(self):
+        return bool(self.get_column("enabled"))
+
+    @enabled.setter
+    def enabled(self, newval):
+        execute("UPDATE libraries "
+                "SET enabled=? "
+                "WHERE libraryid=?", [ newval, self.rowid ])
+        commit()
+
+
+class LibraryTable(objects.Table):
+    def __init__(self):
+        objects.Table.__init__(self, "libraries", Library)
+
+    def do_create(self):
+        execute("CREATE TABLE IF NOT EXISTS libraries "
+                    "(libraryid INTEGER PRIMARY KEY, "
+                    " path TEXT UNIQUE, "
+                    " enabled INTEGER DEFAULT 1)")
+
+    def do_insert(self, path):
+        return execute("INSERT INTO libraries (path) "
+                       "VALUES (?)", (str(path),))
+
+    def do_delete(self, library):
+        return execute("DELETE FROM libraries WHERE libraryid=?", [ int(library) ])
+
+    def do_get(self, rowid):
+        return execute("SELECT libraryid FROM libraries "
+                       "WHERE libraryid=?", [ rowid ])
+
+    def do_lookup(self, path):
+        return execute("SELECT libraryid FROM libraries "
+                       "WHERE path=?", [ str(path) ])
+
+
+Table = LibraryTable()

db/test_library.py

@@ -0,0 +1,59 @@
+# Copyright 2021 (c) Anna Schumaker.
+import db
+import pathlib
+import sqlite3
+import unittest
+from gi.repository import GObject
+
+
+class TestLibraryTable(unittest.TestCase):
+    def setUp(self):
+        db.reset()
+
+    def test_library_table_init(self):
+        self.assertIsInstance(db.library.Table, db.library.LibraryTable)
+        db.execute("SELECT libraryid,path,enabled FROM libraries")
+
+    def test_library_table_insert(self):
+        library = db.library.Table.insert(pathlib.Path("/a/b/c"))
+        self.assertIsInstance(library, db.library.Library)
+        self.assertIsInstance(library, db.objects.Row)
+
+        self.assertEqual(library.path, pathlib.Path("/a/b/c"))
+        self.assertEqual(str(library), "/a/b/c")
+        self.assertTrue(library.enabled)
+
+        with self.assertRaises(sqlite3.IntegrityError):
+            db.library.Table.insert(pathlib.Path("/a/b/c"))
+
+    def test_library_table_delete(self):
+        library = db.library.Table.find(pathlib.Path("/a/b/c"))
+        db.library.Table.delete(library)
+        self.assertIsNone(db.library.Table.lookup(pathlib.Path("/a/b/c")))
+
+    def test_library_table_get(self):
+        library = db.library.Table.insert(pathlib.Path("/a/b/c"))
+        self.assertEqual(db.library.Table.get(1), library)
+        self.assertIsNone(db.library.Table.get(2))
+
+    def test_library_table_lookup(self):
+        library = db.library.Table.insert(pathlib.Path("/a/b/c"))
+        self.assertEqual(db.library.Table.lookup(pathlib.Path("/a/b/c")), library)
+        self.assertIsNone(db.library.Table.lookup(pathlib.Path("/a/b/d")))
+
+    def test_library_compare(self):
+        abc = db.library.Table.insert(pathlib.Path("/a/b/c"))
+        efg = db.library.Table.insert(pathlib.Path("/e/f/g"))
+
+        self.assertTrue(abc < efg)
+        self.assertTrue(efg > abc)
+
+        self.assertFalse(abc > efg)
+        self.assertFalse(efg < abc)
+
+    def test_library_enabled(self):
+        abc = db.library.Table.insert(pathlib.Path("/a/b/c"))
+        self.assertTrue(abc.enabled)
+
+        abc.set_property("enabled", False)
+        self.assertFalse(abc.enabled)