Add issue creation and editing

crates/app/src/presentation.rs

@@ -3,8 +3,8 @@ use gotcha_gitea::models;
 use crate::{
     activity,
     domain::{
-        HistoryCommit, HomeData, IssueDetails, IssueFilter, MilestoneDetails, PullDetails,
-        PullFilter, RepositoryData,
+        HistoryCommit, HomeData, IssueDetails, IssueEditorData, IssueFilter, MilestoneDetails,
+        PullDetails, PullFilter, RepositoryData, civil_from_days, days_from_civil, parse_api_date,
     },
 };
 
@@ -67,6 +67,29 @@ pub struct IssuePage {
     pub comments: Vec<CommentRow>,
 }
 
+#[derive(Clone, uniffi::Record)]
+pub struct IssueEditorLabel {
+    pub id: i64,
+    pub name: String,
+    pub selected: bool,
+}
+
+#[derive(Clone, uniffi::Record)]
+pub struct IssueEditorMilestone {
+    pub id: i64,
+    pub title: String,
+    pub selected: bool,
+}
+
+#[derive(Clone, uniffi::Record)]
+pub struct IssueEditorPage {
+    pub title: String,
+    pub body: String,
+    pub due_date: Option<i64>,
+    pub labels: Vec<IssueEditorLabel>,
+    pub milestones: Vec<IssueEditorMilestone>,
+}
+
 #[derive(Clone, uniffi::Record)]
 pub struct IssueFilterOptions {
     pub milestones: Vec<String>,
@@ -457,6 +480,70 @@ pub fn issue_page(details: IssueDetails) -> IssuePage {
     }
 }
 
+pub fn issue_editor_page(data: IssueEditorData) -> IssueEditorPage {
+    let selected_labels: std::collections::BTreeSet<_> = data
+        .issue
+        .as_ref()
+        .and_then(|issue| issue.labels.as_deref())
+        .unwrap_or_default()
+        .iter()
+        .filter_map(|label| label.id)
+        .collect();
+    let selected_milestone = data
+        .issue
+        .as_ref()
+        .and_then(|issue| issue.milestone.as_ref())
+        .and_then(|milestone| milestone.id);
+    let mut labels: Vec<_> = data
+        .labels
+        .into_iter()
+        .filter_map(|label| {
+            let id = label.id?;
+            Some(IssueEditorLabel {
+                id,
+                name: label.name?,
+                selected: selected_labels.contains(&id),
+            })
+        })
+        .collect();
+    labels.sort_by_key(|label| label.name.to_lowercase());
+    let mut milestones: Vec<_> = data
+        .milestones
+        .into_iter()
+        .filter(|milestone| {
+            milestone.state.as_deref() != Some("closed") || milestone.id == selected_milestone
+        })
+        .filter_map(|milestone| {
+            let id = milestone.id?;
+            Some(IssueEditorMilestone {
+                id,
+                title: milestone.title?,
+                selected: Some(id) == selected_milestone,
+            })
+        })
+        .collect();
+    milestones.sort_by_key(|milestone| milestone.title.to_lowercase());
+    IssueEditorPage {
+        title: data
+            .issue
+            .as_ref()
+            .and_then(|issue| issue.title.clone())
+            .unwrap_or_default(),
+        body: data
+            .issue
+            .as_ref()
+            .and_then(|issue| issue.body.clone())
+            .unwrap_or_default(),
+        due_date: data
+            .issue
+            .as_ref()
+            .and_then(|issue| issue.due_date.as_deref())
+            .and_then(parse_api_date),
+        labels,
+        milestones,
+    }
+}
+
 pub fn pull_page(details: PullDetails) -> PullPage {
     let pull = &details.pull;
     let author = pull
@@ -840,31 +927,6 @@ fn heat_cells(data: &[models::UserHeatmapData]) -> (Vec<HeatCell>, i64) {
     (cells, contribution_count)
 }
 
-fn civil_from_days(days: i64) -> (i64, i64, i64) {
-    let days = days + 719_468;
-    let era = days.div_euclid(146_097);
-    let day_of_era = days - era * 146_097;
-    let year_of_era =
-        (day_of_era - day_of_era / 1_460 + day_of_era / 36_524 - day_of_era / 146_096) / 365;
-    let mut year = year_of_era + era * 400;
-    let day_of_year = day_of_era - (365 * year_of_era + year_of_era / 4 - year_of_era / 100);
-    let month_prime = (5 * day_of_year + 2) / 153;
-    let day = day_of_year - (153 * month_prime + 2) / 5 + 1;
-    let month = month_prime + if month_prime < 10 { 3 } else { -9 };
-    year += i64::from(month <= 2);
-    (year, month, day)
-}
-
-fn days_from_civil(mut year: i64, month: i64, day: i64) -> i64 {
-    year -= i64::from(month <= 2);
-    let era = year.div_euclid(400);
-    let year_of_era = year - era * 400;
-    let month_prime = month + if month > 2 { -3 } else { 9 };
-    let day_of_year = (153 * month_prime + 2) / 5 + day - 1;
-    let day_of_era = year_of_era * 365 + year_of_era / 4 - year_of_era / 100 + day_of_year;
-    era * 146_097 + day_of_era - 719_468
-}
-
 fn label_row(label: &models::Label) -> Option<LabelRow> {
     let name = label.name.as_deref()?.trim();
     let color = label.color.as_deref()?.trim().trim_start_matches('#');
@@ -1172,6 +1234,42 @@ mod tests {
         assert_eq!(page.state, "closed");
     }
 
+    #[test]
+    fn issue_editor_exposes_selected_metadata_and_due_date() {
+        let selected_label = models::Label {
+            id: Some(2),
+            name: Some("bug".into()),
+            ..Default::default()
+        };
+        let page = issue_editor_page(IssueEditorData {
+            issue: Some(models::Issue {
+                title: Some("Title".into()),
+                body: Some("Body".into()),
+                due_date: Some("2024-02-29T18:00:00Z".into()),
+                labels: Some(vec![selected_label.clone()]),
+                milestone: Some(Box::new(models::Milestone {
+                    id: Some(4),
+                    title: Some("Current".into()),
+                    state: Some("closed".into()),
+                    ..Default::default()
+                })),
+                ..Default::default()
+            }),
+            labels: vec![selected_label],
+            milestones: vec![models::Milestone {
+                id: Some(4),
+                title: Some("Current".into()),
+                state: Some("closed".into()),
+                ..Default::default()
+            }],
+        });
+
+        assert_eq!((page.title.as_str(), page.body.as_str()), ("Title", "Body"));
+        assert_eq!(page.due_date, Some(1_709_164_800));
+        assert!(page.labels[0].selected);
+        assert!(page.milestones[0].selected);
+    }
+
     #[test]
     fn builds_sorted_issue_filter_options() {
         let filter = IssueFilter {