add backlinks to kanji in generated practice

1 files changed, 41 insertions, 0 deletions

diff --git a/src/server.rs b/src/server.rs
index 774cff4..5e5d61b 100644
--- a/src/server.rs
+++ b/src/server.rs
@@ -211,6 +211,8 @@ async fn gen_examples_page(mut req: Request<State>) -> tide::Result {
                   </div>
                   <div id="gen_ex_words" class="vocabtable">
                   </div>
+                  <div id="gen_ex_kanji" class="vocabtable">
+                  </div>
                 </div>
               </div>
             </body>
@@ -261,11 +263,50 @@ async fn gen_examples_page(mut req: Request<State>) -> tide::Result {
                 }
             }
 
+            let mut kanji = "<table>".to_string();
+            let mut chrvec = ex
+                .chars
+                .iter()
+                .map(|chr| {
+                    (
+                        chr,
+                        req.state()
+                            .batches
+                            .iter()
+                            .take(last_level + 1)
+                            .enumerate()
+                            .flat_map(|(ib, b)| {
+                                b.examples
+                                    .iter()
+                                    .filter(|ex| ex.chars.contains(chr))
+                                    .map(move |ex| (ib, ex))
+                            })
+                            .collect::<Vec<_>>(),
+                    )
+                })
+                .collect::<Vec<_>>();
+            chrvec.sort_by_key(|(_, exs)| exs.len());
+            for (chr, exs) in chrvec.iter().take(5) {
+                for (cnt, (ib, ex)) in exs.iter().enumerate().take(4) {
+                    if cnt == 0 {
+                        kanji +=
+                            &format!(r#"<tr><td class="tab_large font_ja">{}&nbsp;&nbsp;"#, chr);
+                    } else {
+                        kanji += &format!(r#"<tr><td>"#);
+                    }
+                    kanji += &format!(
+                        r#"</td><td><a href="{:03}.html">{:03}</a>&nbsp;&nbsp;</td><td class="tab_large font_ja">{}</td></tr>"#,
+                        ib, ib, ex.ja
+                    );
+                }
+            }
+
             let item = serde_json::json!({
                 "ja": ex.ja,
                 "en": ex.en,
                 "furi": ex.furigana_markup(),
                 "vocab": expl + "</table>",
+                "kanji": kanji + "</table>",
             });
             tx.send_blocking(Ok(format!(
                 "<script> add_example({}); </script>\n",