//! Regression coverage for conflict diagnostics and validation pass ordering.

use super::RuntimeKeymap;
use codex_config::types::TuiKeymap;
use pretty_assertions::assert_eq;
use serde_json::Value;
use serde_json::json;

#[test]
fn conflicting_contexts_report_the_first_conflict_in_validation_order() {
    let contexts = [
        ("editor", "insert_newline", "yank"),
        ("vim_normal", "enter_insert", "cancel_operator"),
        ("vim_operator", "delete_line", "cancel"),
        ("vim_text_object", "word", "cancel"),
        ("pager", "scroll_up", "close_transcript"),
        ("list", "move_up", "cancel"),
        ("agents", "search", "toggle_grouping"),
        ("approval", "open_fullscreen", "cancel"),
    ];
    let mut config = serde_json::Map::new();
    for (context, first, second) in contexts {
        config.insert(context.to_string(), json!({first: "f12", second: "f12"}));
    }

    for (context, first, second) in contexts {
        let keymap: TuiKeymap = serde_json::from_value(Value::Object(config.clone()))
            .expect("valid keymap configuration");
        assert_eq!(
            RuntimeKeymap::from_config(&keymap).expect_err("expected binding conflict"),
            format!(
                "Ambiguous `tui.keymap.{context}` bindings: `{first}` and `{second}` use the same key. \
Set unique keys in `~/.codex/config.toml` and retry. \
See the Codex keymap documentation for supported actions and examples."
            )
        );
        config.remove(context);
    }
}

#[test]
fn new_agents_defaults_preserve_existing_custom_bindings() {
    for (action, alias) in [("archive", "a"), ("delete", "delete"), ("hide", "h")] {
        for (context, existing, suffix) in [
            ("agents", "stop", ""),
            ("list", "move_down", ""),
            ("global", "copy", ""),
            ("agents", "stop", " f12"),
            ("list", "move_down", " f12"),
        ] {
            // Plain keys are allowed in the dashboard, but global actions and list
            // chord prefixes still share text-entry surfaces.
            if alias != "delete" && (context == "global" || context == "list" && !suffix.is_empty())
            {
                continue;
            }
            let keymap: TuiKeymap = serde_json::from_value(
                json!({context: {existing: format!("{alias}{suffix}")}, "approval": {"open_fullscreen": "f12", "approve_for_session": []},
                    "editor": {"move_line_start": [], "move_line_end": [], "delete_backward_word": [], "delete_forward": []}}),
            )
            .unwrap();
            let runtime =
                RuntimeKeymap::from_config(&keymap).expect("existing configuration remains valid");
            let bindings = match action {
                "archive" => &runtime.agents.archive,
                "delete" => &runtime.agents.delete,
                "hide" => &runtime.agents.hide,
                _ => unreachable!(),
            };
            assert!(
                bindings.is_empty(),
                "{action} shadows {context}.{existing} = {alias}{suffix}"
            );
        }
    }
}