From 2c362d699106da4fbe81701664c438107f74f4fb Mon Sep 17 00:00:00 2001
From: Damien Elmes <gpg@ankiweb.net>
Date: Fri, 20 Mar 2020 15:35:57 +1000
Subject: [PATCH] search order

---
 rslib/src/config.rs       | 27 +++++++++++++++++++++++++++
 rslib/src/search/cards.rs | 32 +++++++++++++++++++++++++++++---
 2 files changed, 56 insertions(+), 3 deletions(-)

diff --git a/rslib/src/config.rs b/rslib/src/config.rs
index 9514d2cab..2224b68f3 100644
--- a/rslib/src/config.rs
+++ b/rslib/src/config.rs
@@ -16,4 +16,31 @@ pub struct Config {
     pub(crate) rollover: Option<i8>,
     pub(crate) creation_offset: Option<i32>,
     pub(crate) local_offset: Option<i32>,
+    #[serde(rename = "sortType")]
+    pub(crate) browser_sort_kind: SortKind,
+    #[serde(rename = "sortBackwards", default)]
+    pub(crate) browser_sort_reverse: bool,
+}
+
+#[derive(Deserialize, PartialEq, Debug)]
+#[serde(rename_all = "camelCase")]
+pub enum SortKind {
+    #[serde(rename = "noteCrt")]
+    NoteCreation,
+    NoteMod,
+    #[serde(rename = "noteFld")]
+    NoteField,
+    CardMod,
+    CardReps,
+    CardDue,
+    CardEase,
+    CardLapses,
+    #[serde(rename = "cardIvl")]
+    CardInterval,
+}
+
+impl Default for SortKind {
+    fn default() -> Self {
+        Self::NoteCreation
+    }
 }
diff --git a/rslib/src/search/cards.rs b/rslib/src/search/cards.rs
index 00a3f21e9..a0ab40562 100644
--- a/rslib/src/search/cards.rs
+++ b/rslib/src/search/cards.rs
@@ -2,7 +2,9 @@
 // License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 
 use super::{parser::Node, sqlwriter::node_to_sql};
+use crate::card::CardType;
 use crate::collection::RequestContext;
+use crate::config::SortKind;
 use crate::err::Result;
 use crate::search::parser::parse;
 use crate::types::ObjID;
@@ -13,11 +15,12 @@ pub(crate) fn search_cards<'a, 'b>(
 ) -> Result<Vec<ObjID>> {
     let top_node = Node::Group(parse(search)?);
     let (sql, args) = node_to_sql(req, &top_node)?;
-
-    let sql = format!(
-        "select c.id from cards c, notes n where c.nid=n.id and {} order by c.id",
+    let mut sql = format!(
+        "select c.id from cards c, notes n where c.nid=n.id and {} order by ",
         sql
     );
+    write_order(req, &mut sql)?;
+
     let mut stmt = req.storage.db.prepare(&sql)?;
     let ids: Vec<i64> = stmt
         .query_map(&args, |row| row.get(0))?
@@ -26,3 +29,26 @@ pub(crate) fn search_cards<'a, 'b>(
     println!("sql {}\nargs {:?} count {}", sql, args, ids.len());
     Ok(ids)
 }
+
+fn write_order(req: &mut RequestContext, sql: &mut String) -> Result<()> {
+    let conf = req.storage.all_config()?;
+    let tmp_str;
+    sql.push_str(match conf.browser_sort_kind {
+        SortKind::NoteCreation => "n.id, c.ord",
+        SortKind::NoteMod => "n.mod, c.ord",
+        SortKind::NoteField => "n.sfld collate nocase, c.ord",
+        SortKind::CardMod => "c.mod",
+        SortKind::CardReps => "c.reps",
+        SortKind::CardDue => "c.type, c.due",
+        SortKind::CardEase => {
+            tmp_str = format!("c.type = {}, c.factor", CardType::New as i8);
+            &tmp_str
+        }
+        SortKind::CardLapses => "c.lapses",
+        SortKind::CardInterval => "c.ivl",
+    });
+    if conf.browser_sort_reverse {
+        sql.push_str(" desc");
+    }
+    Ok(())
+}