Show the property columns side by side

- infobox requirements
- wikidata entries

src/lib.rs

@@ -21,18 +21,56 @@ pub mod wikipedia_infobox_analyzer {
     }
 
     /// Creates an ascii infobox out of the properties
-    pub fn format_infobox_from_used_properties(name: String, properties: Vec<u64>) -> String {
+    pub fn format_infobox_from_used_properties(name: String, qid: String, properties_template: Vec<u64>, properties_item: Vec<u64>, ) -> String {
         let mut ascii_table = AsciiTable::default();
-        ascii_table.set_max_width(26);
+        ascii_table.set_max_width(80);
         ascii_table
             .column(0)
-            .set_header(name)
+            .set_header("Infobox requires")
             .set_align(Align::Left);
 
-        let data: Vec<Vec<String>> = properties.iter().map(|v| vec![format!("P{v}")]).collect();
+        ascii_table
+            .column(1)
+            .set_header(format!("Wikidata {name} ({qid})"))
+            .set_align(Align::Left);
+
+        // Display the property columns as a table
+        let data: Vec<Vec<String>> = join_columns(&properties_template, &properties_item)
+            .iter()
+            .map(|&m| {
+                  let (v1, v2) = m;
+                  vec![ v1.map_or("".to_owned(), |v| format!("P{v}").to_owned())
+                      , v2.map_or("".to_owned(), |v| format!("P{v}").to_owned())]
+                }
+            ).collect();
         ascii_table.format(data)
     }
 
+    /// Properties will be displayed in the right column if they are in the list for that column
+    /// All items in the left columns will be displayed
+    /// The remaining items in the right columns not in the left columns will trail in the right column
+    /// ┌───────┬───────┐
+    /// │   1   │   1   │
+    /// │   3   │       │
+    /// │       │   2   │
+    /// │       │   4   │
+    /// └───────┴───────┘
+    /// So for example, [1, 3] and [1, 2, 4] become [1, 2, 3, 4], as shown above
+    fn join_columns<T: Copy + Eq>(vec1: &[T], vec2: &[T]) -> Vec<(Option<T>, Option<T>)> {
+        vec1.iter()
+            .flat_map(|n1| {
+                if let Some(&n2) = vec2.iter().find(|&x| x == n1) {
+                    std::iter::once((Some(*n1), Some(n2)))
+                } else {
+                    std::iter::once((Some(*n1), None))
+                }
+            })
+            .chain(vec2.iter()
+                   .filter(|&n2| !vec1.contains(n2))
+                   .map(|n2| (None, Some(*n2))))
+            .collect()
+    }
+
     /// Fetches the wikidata label for the wiki property
     pub async fn fetch_name_for_wiki_property(pid: u64) -> String {
         let query = format!("
@@ -139,16 +177,22 @@ mod tests {
         assert_eq!(
             format_infobox_from_used_properties(
                 "Earth".to_string(),
-                vec![31, 361, 571]
+                "Q2".to_string(),
+                vec![18, 170, 571],
+                vec![18, 31, 138, 170, 361, 571]
             ),
+
             concat![
-                "┌───────┐\n",
-                "│ Earth │\n", // item identifier: Q2
-                "├───────┤\n",
-                "│ P31   │\n", // property: instance of
-                "│ P361  │\n", // property: part of
-                "│ P571  │\n", // property: inception
-                "└───────┘\n"
+                "┌──────────────────┬─────────────────────┐\n",
+                "│ Infobox requires │ Wikidata Earth (Q2) │\n",
+                "├──────────────────┼─────────────────────┤\n",
+                "│ P18              │ P18                 │\n", // property: image
+                "│ P170             │ P170                │\n", // property: creator
+                "│ P571             │ P571                │\n", // property: inception
+                "│                  │ P31                 │\n", // property: instance of
+                "│                  │ P138                │\n", // property: inception
+                "│                  │ P361                │\n", // property: part of
+                "└──────────────────┴─────────────────────┘\n",
             ]
         );
     }