//! Task navigation (`nuwiki.list.nextTask`) plus a smoke test that the
//! `COMMANDS` registry advertises every list/heading/file handler the
//! editor surface relies on.

use nuwiki_core::syntax::vimwiki::VimwikiSyntax;
use nuwiki_core::syntax::SyntaxPlugin;
use nuwiki_lsp::commands::ops;
use tower_lsp::lsp_types::Url;

fn parse(src: &str) -> nuwiki_core::ast::DocumentNode {
    VimwikiSyntax::new().parse(src)
}

fn dummy_uri() -> Url {
    Url::parse("file:///tmp/note.wiki").unwrap()
}

// ===== next_task =====

#[test]
fn next_task_returns_first_unfinished() {
    let src = "- [X] done\n- [ ] todo\n- [ ] later\n";
    let doc = parse(src);
    let loc = ops::next_task(&doc, &dummy_uri(), src, 0, 0, true).expect("found a task");
    // Should be line 1 (the first [ ]).
    assert_eq!(loc.range.start.line, 1);
}

#[test]
fn next_task_wraps_around_when_no_task_after_cursor() {
    // Only task is on line 0; cursor on line 2 → wraps back.
    let src = "- [ ] todo\n- [X] done\n- [X] also done\n";
    let doc = parse(src);
    let loc = ops::next_task(&doc, &dummy_uri(), src, 2, 0, true).expect("found");
    assert_eq!(loc.range.start.line, 0);
}

#[test]
fn next_task_returns_none_when_no_open_tasks() {
    let src = "- [X] a\n- [X] b\n";
    let doc = parse(src);
    let loc = ops::next_task(&doc, &dummy_uri(), src, 0, 0, true);
    assert!(loc.is_none());
}

#[test]
fn next_task_only_counts_items_with_checkboxes() {
    // Plain items without a `[…]` are ignored — they're not tasks.
    let src = "- plain\n- [ ] real task\n";
    let doc = parse(src);
    let loc = ops::next_task(&doc, &dummy_uri(), src, 0, 0, true).expect("found");
    assert_eq!(loc.range.start.line, 1);
}

// ===== smoke: COMMANDS list matches registered handlers =====

#[test]
fn commands_list_is_complete() {
    let names: Vec<&str> = nuwiki_lsp::commands::COMMANDS.to_vec();
    for name in [
        "nuwiki.file.delete",
        "nuwiki.list.toggleCheckbox",
        "nuwiki.list.cycleCheckbox",
        "nuwiki.list.rejectCheckbox",
        "nuwiki.list.nextTask",
        "nuwiki.heading.addLevel",
        "nuwiki.heading.removeLevel",
    ] {
        assert!(names.contains(&name), "missing: {name}");
    }
}