use super::*;

// ── is_config_file ────────────────────────────────────────────────────────

#[test]
fn is_config_file_identifies_root_project_toml() {
    let git_root = PathBuf::from("/proj");
    let config = git_root.join(".huskies").join("project.toml");
    assert!(is_config_file(&config, &git_root));
}

#[test]
fn is_config_file_identifies_root_agents_toml() {
    let git_root = PathBuf::from("/proj");
    let agents = git_root.join(".huskies").join("agents.toml");
    assert!(is_config_file(&agents, &git_root));
}

#[test]
fn is_config_file_rejects_worktree_copies() {
    let git_root = PathBuf::from("/proj");
    // project.toml inside a worktree must NOT be treated as the root config.
    let worktree_config =
        PathBuf::from("/proj/.huskies/worktrees/42_story_foo/.huskies/project.toml");
    assert!(!is_config_file(&worktree_config, &git_root));
}

#[test]
fn is_config_file_rejects_other_files() {
    let git_root = PathBuf::from("/proj");
    // Random files must not match.
    assert!(!is_config_file(
        &PathBuf::from("/proj/.huskies/work/2_current/42_story_foo.md"),
        &git_root
    ));
    assert!(!is_config_file(
        &PathBuf::from("/proj/.huskies/README.md"),
        &git_root
    ));
}

#[test]
fn is_config_file_rejects_wrong_root() {
    let git_root = PathBuf::from("/proj");
    let other_root_config = PathBuf::from("/other/.huskies/project.toml");
    assert!(!is_config_file(&other_root_config, &git_root));
}

// ── stage_metadata ────────────────────────────────────────────────────────

#[test]
fn stage_metadata_returns_correct_actions() {
    let (action, msg) = stage_metadata("2_current", "42_story_foo").unwrap();
    assert_eq!(action, "start");
    assert_eq!(msg, "huskies: start 42_story_foo");

    let (action, msg) = stage_metadata("5_done", "42_story_foo").unwrap();
    assert_eq!(action, "done");
    assert_eq!(msg, "huskies: done 42_story_foo");

    let (action, msg) = stage_metadata("6_archived", "42_story_foo").unwrap();
    assert_eq!(action, "accept");
    assert_eq!(msg, "huskies: accept 42_story_foo");

    assert!(stage_metadata("unknown", "id").is_none());
}

// ── sweep_done_to_archived (CRDT-based) ─────────────────────────────────
//
// The sweep function reads from `read_all_typed()` and checks
// `Stage::Done { merged_at, .. }`.  Items created via
// `write_item_with_content("5_done")` project `merged_at = Utc::now()`,
// so we test with Duration::ZERO to sweep immediately and with a long
// retention to verify items are kept.  No filesystem access is involved.

#[test]
fn sweep_moves_old_items_to_archived() {
    crate::db::ensure_content_store();
    crate::db::write_item_with_content("9880_story_sweep_old", "5_done", "---\nname: old\n---\n");

    // With ZERO retention, any Done item should be swept.
    sweep_done_to_archived(Duration::ZERO);

    // Verify the item was moved to 6_archived in the CRDT.
    let items = crate::pipeline_state::read_all_typed();
    let item = items
        .iter()
        .find(|i| i.story_id.0 == "9880_story_sweep_old");
    assert!(
        item.is_some_and(|i| matches!(i.stage, crate::pipeline_state::Stage::Archived { .. })),
        "item should be archived after sweep"
    );
}

#[test]
fn sweep_keeps_recent_items_in_done() {
    crate::db::ensure_content_store();
    crate::db::write_item_with_content("9881_story_sweep_new", "5_done", "---\nname: new\n---\n");

    // With a very long retention, the item (merged_at ≈ now) should stay.
    sweep_done_to_archived(Duration::from_secs(999_999));

    let items = crate::pipeline_state::read_all_typed();
    let item = items
        .iter()
        .find(|i| i.story_id.0 == "9881_story_sweep_new");
    assert!(
        item.is_some_and(|i| matches!(i.stage, crate::pipeline_state::Stage::Done { .. })),
        "item should remain in Done with long retention"
    );
}

#[test]
fn sweep_respects_custom_retention() {
    crate::db::ensure_content_store();
    crate::db::write_item_with_content(
        "9882_story_sweep_custom",
        "5_done",
        "---\nname: custom\n---\n",
    );

    // With ZERO retention, sweep should promote.
    sweep_done_to_archived(Duration::ZERO);

    let items = crate::pipeline_state::read_all_typed();
    let item = items
        .iter()
        .find(|i| i.story_id.0 == "9882_story_sweep_custom");
    assert!(
        item.is_some_and(|i| matches!(i.stage, crate::pipeline_state::Stage::Archived { .. })),
        "item should be archived with zero retention"
    );
}

/// Prove that the sweep reads `merged_at` from the CRDT (not `Utc::now()`).
///
/// This test sets `merged_at` to 10 seconds in the past and uses a 5-second
/// retention.  If the sweep were still using `Utc::now()` as the start time
/// (the original bug), the elapsed time would be ~0 and the item would NOT
/// be swept.  With the fix, the item is swept because 10s > 5s retention.
#[test]
fn sweep_uses_crdt_merged_at_not_utc_now() {
    crate::db::ensure_content_store();

    let ten_seconds_ago = (chrono::Utc::now() - chrono::Duration::seconds(10)).timestamp() as f64;

    // Write item in 5_done with an explicit past merged_at timestamp.
    crate::crdt_state::write_item(
        "9883_story_sweep_merged_at",
        "5_done",
        Some("merged_at test"),
        None,
        None,
        None,
        None,
        None,
        None,
        Some(ten_seconds_ago),
    );

    // 5-second retention: item is 10s old → should be swept.
    sweep_done_to_archived(Duration::from_secs(5));

    let items = crate::pipeline_state::read_all_typed();
    let item = items
        .iter()
        .find(|i| i.story_id.0 == "9883_story_sweep_merged_at");
    assert!(
        item.is_some_and(|i| matches!(i.stage, crate::pipeline_state::Stage::Archived { .. })),
        "item with merged_at 10s ago should be archived with 5s retention"
    );
}

/// Prove that an item with merged_at NEWER than done_retention is NOT swept.
#[test]
fn sweep_keeps_item_newer_than_retention() {
    crate::db::ensure_content_store();

    let one_second_ago = (chrono::Utc::now() - chrono::Duration::seconds(1)).timestamp() as f64;

    crate::crdt_state::write_item(
        "9884_story_sweep_recent",
        "5_done",
        Some("recent merged_at test"),
        None,
        None,
        None,
        None,
        None,
        None,
        Some(one_second_ago),
    );

    // 1-hour retention: item is only 1s old → should NOT be swept.
    sweep_done_to_archived(Duration::from_secs(3600));

    let items = crate::pipeline_state::read_all_typed();
    let item = items
        .iter()
        .find(|i| i.story_id.0 == "9884_story_sweep_recent");
    assert!(
        item.is_some_and(|i| matches!(i.stage, crate::pipeline_state::Stage::Done { .. })),
        "item with merged_at 1s ago should stay in Done with 1-hour retention"
    );
}