From f0155f4b2a8fbdc4ea082ba60e231acfc22a1d08 Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Tue, 2 May 2017 08:41:18 +0530
Subject: [PATCH] Port calibredb saved_searches

---
 src/calibre/db/cli/cmd_saved_searches.py | 64 ++++++++++++++++++++++--
 src/calibre/db/cli/main.py               |  3 +-
 2 files changed, 61 insertions(+), 6 deletions(-)

diff --git a/src/calibre/db/cli/cmd_saved_searches.py b/src/calibre/db/cli/cmd_saved_searches.py
index 2f6f22ae56..686ea16246 100644
--- a/src/calibre/db/cli/cmd_saved_searches.py
+++ b/src/calibre/db/cli/cmd_saved_searches.py
@@ -7,16 +7,70 @@ from __future__ import absolute_import, division, print_function, unicode_litera
 readonly = False
 version = 0  # change this if you change signature of implementation()
 
+from calibre import prints
 
-def implementation(db, notify_changes, *args):
-    is_remote = notify_changes is not None
-    is_remote
+
+def implementation(db, notify_changes, action, *args):
+    if action == 'list':
+        with db.safe_read_lock:
+            names = db.saved_search_names()
+            return {n: db.saved_search_lookup(n) for n in names}
+    if action == 'add':
+        name, val = args
+        db.saved_search_add(name, val)
+        return
+    if action == 'remove':
+        name = args[0]
+        db.saved_search_delete(name)
+        return
 
 
 def option_parser(get_parser, args):
-    pass
+    parser = get_parser(
+        _(
+            '''\
+%prog saved_searches [options] (list|add|remove)
+
+Manage the saved searches stored in this database.
+If you try to add a query with a name that already exists, it will be
+replaced.
+
+Syntax for adding:
+
+%prog saved_searches add search_name search_expression
+
+Syntax for removing:
+
+%prog saved_searches remove search_name
+    '''
+        )
+    )
+    return parser
 
 
 def main(opts, args, dbctx):
-    raise NotImplementedError('TODO: implement this')
+    args = args or ['list']
+    if args[0] == 'list':
+        for name, value in dbctx.run('saved_searches', 'list').iteritems():
+            prints(_('Name:'), name)
+            prints(_('Search string:'), value)
+            print()
+    elif args[0] == 'add':
+        if len(args) < 3:
+            raise SystemExit(_('Error: You must specify a name and a search string'))
+        dbctx.run('saved_searches', 'add', args[1], args[2])
+        prints(args[1], _('added'))
+    elif args[0] == 'remove':
+        if len(args) < 2:
+            raise SystemExit(_('Error: You must specify a name'))
+        dbctx.run('saved_searches', 'remove', args[1])
+        prints(args[1], _('removed'))
+    else:
+        raise SystemExit(
+            _(
+                'Error: Action %s not recognized, must be one '
+                'of: (add|remove|list)'
+            ) % args[0]
+        )
+
     return 0
diff --git a/src/calibre/db/cli/main.py b/src/calibre/db/cli/main.py
index 3c2cc14270..035eac26d8 100644
--- a/src/calibre/db/cli/main.py
+++ b/src/calibre/db/cli/main.py
@@ -21,7 +21,8 @@ from calibre.utils.serialize import MSGPACK_MIME
 COMMANDS = (
     'list', 'add', 'remove', 'add_format', 'remove_format', 'show_metadata',
     'set_metadata', 'export', 'catalog',
-    # 'saved_searches', 'add_custom_column',
+    'saved_searches',
+    # 'add_custom_column',
     # 'custom_columns', 'remove_custom_column', 'set_custom', 'restore_database',
     # 'check_library', 'list_categories', 'backup_metadata', 'clone', 'embed_metadata',
     # 'search'