Add issue label and milestone filters

crates/app/src/presentation.rs

@@ -3,7 +3,8 @@ use gotcha_gitea::models;
 use crate::{
     activity,
     domain::{
-        HistoryCommit, HomeData, IssueDetails, MilestoneDetails, PullDetails, RepositoryData,
+        HistoryCommit, HomeData, IssueDetails, IssueFilter, MilestoneDetails, PullDetails,
+        RepositoryData,
     },
 };
 
@@ -66,6 +67,14 @@ pub struct IssuePage {
     pub comments: Vec<CommentRow>,
 }
 
+#[derive(Clone, uniffi::Record)]
+pub struct IssueFilterOptions {
+    pub milestones: Vec<String>,
+    pub labels: Vec<String>,
+    pub selected_milestone: String,
+    pub selected_labels: Vec<String>,
+}
+
 #[derive(Clone, uniffi::Record)]
 pub struct MilestoneRow {
     pub id: i64,
@@ -219,6 +228,31 @@ pub fn issue_rows(issues: &[models::Issue]) -> Vec<IssueRow> {
         .collect()
 }
 
+pub fn issue_filter_options(
+    labels: &[models::Label],
+    milestones: &[models::Milestone],
+    filter: &IssueFilter,
+) -> IssueFilterOptions {
+    let mut labels: Vec<_> = labels
+        .iter()
+        .filter_map(|label| label.name.clone())
+        .collect();
+    labels.sort_by_key(|label| label.to_lowercase());
+    labels.dedup();
+    let mut milestones: Vec<_> = milestones
+        .iter()
+        .filter_map(|milestone| milestone.title.clone())
+        .collect();
+    milestones.sort_by_key(|milestone| milestone.to_lowercase());
+    milestones.dedup();
+    IssueFilterOptions {
+        milestones,
+        labels,
+        selected_milestone: filter.milestone.clone(),
+        selected_labels: filter.labels.iter().cloned().collect(),
+    }
+}
+
 pub fn milestone_rows(milestones: &[models::Milestone]) -> Vec<MilestoneRow> {
     let mut milestones = milestones.to_vec();
     milestones.sort_by_key(|milestone| {
@@ -879,4 +913,40 @@ mod tests {
 
         assert_eq!(page.state, "closed");
     }
+
+    #[test]
+    fn builds_sorted_issue_filter_options() {
+        let filter = IssueFilter {
+            milestone: "v2".into(),
+            labels: ["bug".into(), "critical".into()].into(),
+        };
+        let options = issue_filter_options(
+            &[
+                models::Label {
+                    name: Some("critical".into()),
+                    ..Default::default()
+                },
+                models::Label {
+                    name: Some("bug".into()),
+                    ..Default::default()
+                },
+            ],
+            &[
+                models::Milestone {
+                    title: Some("v2".into()),
+                    ..Default::default()
+                },
+                models::Milestone {
+                    title: Some("v1".into()),
+                    ..Default::default()
+                },
+            ],
+            &filter,
+        );
+
+        assert_eq!(options.labels, ["bug", "critical"]);
+        assert_eq!(options.milestones, ["v1", "v2"]);
+        assert_eq!(options.selected_labels, ["bug", "critical"]);
+        assert_eq!(options.selected_milestone, "v2");
+    }
 }