codex/codex-rs/tui/src/bottom_pane/apply_patch_header.rs

//! Render file-change approval descriptions and cross-platform destinations.

use super::approval_overlay::ApplyPatchApprovalRequest;
use crate::diff_model::FileChange;
use crate::render::renderable::Renderable;
use crate::terminal_hyperlinks::HyperlinkText;
use codex_utils_path_uri::LegacyAppPathString;
use ratatui::style::Stylize;
use ratatui::text::Line;

pub(super) fn build_header(request: &ApplyPatchApprovalRequest) -> Box<dyn Renderable> {
    let mut header = Vec::new();
    if let Some(thread_label) = &request.thread_label {
        header.push(Line::from(vec![
            "Thread: ".into(),
            thread_label.clone().bold(),
        ]));
    }

    if !header.is_empty() {
        header.push(Line::from(""));
    }

    let description = request
        .reason
        .as_deref()
        .filter(|reason| !reason.is_empty())
        .unwrap_or("Apply proposed file edits");
    header.push(Line::from_iter([
        "Description: ".into(),
        description.to_string().italic(),
    ]));

    let mut destinations: Vec<_> = request
        .changes
        .iter()
        .flat_map(|(path, change)| {
            let move_destination = match change {
                FileChange::Update {
                    move_path: Some(move_path),
                    ..
                } => Some(move_path),
                FileChange::Add { .. }
                | FileChange::Delete { .. }
                | FileChange::Update {
                    move_path: None, ..
                } => None,
            };
            std::iter::once(path).chain(move_destination)
        })
        .map(|path| {
            LegacyAppPathString::from_path(path)
                .to_inferred_path_uri()
                .map(|path| path.inferred_native_path_string())
                .unwrap_or_else(|| request.cwd.join(path).display().to_string())
        })
        .collect();
    destinations.sort();
    destinations.dedup();
    if destinations.is_empty() {
        header.push(Line::from(vec![
            "Destination: ".into(),
            "unavailable".bold(),
        ]));
    }
    for destination in destinations {
        header.push(Line::from_iter([
            "Destination: ".into(),
            destination.bold(),
        ]));
    }
    Box::new(HyperlinkText::new(header))
}