//! 主题三档（Ink / Silver / 跟随系统）的落点测试（M229；从 `app/tests.rs` 拆出守 400 行）。
//!
//! 这一份只管**用户点设置页那三枚 chip 之后**发生的事：换色板、同步设置组状态、落盘。
//! `Auto`（跟随系统）那条路在 `app::tests::the_system_theme_never_overrides_an_explicit_one`。

use crate::app::message::Message;
use crate::app::state::App;
use crate::cli::Options;
use crate::pages;
use crate::theme::Families;
use unlucky_design::color::SchemeFlavor;
use unlucky_presenter::mock::MockBackend;
use unlucky_presenter::prefs::ThemeMode;
use unlucky_presenter::settings_bridge::SettingsBridge;

const FAMILIES: Families = Families {
    text: "Segoe UI",
    display: "Segoe UI",
    mono: "Consolas",
};

/// 一个把配置写在临时文件里的 App：测「落盘」必须真的过文件（内存桥读回来永远是出厂值）。
fn with_config() -> (App, std::path::PathBuf) {
    let dir = std::env::temp_dir().join(format!("ull-theme-m229-{}", std::process::id()));
    std::fs::create_dir_all(dir.join("config")).expect("临时目录");
    let path = dir.join("config/launcher.json");
    std::fs::write(&path, "{}").expect("写配置文件");

    let app = App::with_presenter(
        Options::default(),
        FAMILIES,
        SchemeFlavor::Light,
        Box::new(MockBackend::new()),
        SettingsBridge::with_path(&path),
    );
    (app, dir)
}

/// M229：设置页「通用 → 主题」三档（Ink / Silver / 跟随系统）真的换色板、真的落盘。
///
/// 抓得住：①`pages::Message::Theme` 没接进 `on_page`（点了没反应）②接了但不换 `Ui`
/// （只有选中态变了，界面颜色还是旧的）③同步设置组状态漏了（设置页首帧/刷新后画错档）
/// ④落盘漏了（重启回旧值——这里**真的过文件**：`with_config` 用 `SettingsBridge::with_path` 写临时
/// 配置，再用同一路径重新 `load()` 读回；内存桥读回来永远是出厂值，验不了落盘）。
/// 抓不住：色板好不好看、像素级差异（那要截图，见 `DevDocs/artifacts/m229/`）。
#[test]
fn the_theme_message_switches_the_board_and_persists_it() {
    let (mut app, dir) = with_config();
    assert_eq!(app.board_name(), "silver", "首帧是浅色主方案（Silver）");

    // 选 Ink（= 深色主方案）
    let _ = app.update(Message::Page(pages::Message::Theme(ThemeMode::Dark)));
    assert_eq!(app.theme_mode(), ThemeMode::Dark);
    assert_eq!(app.board_name(), "ink", "Ink 深板要真切过去");
    assert_eq!(app.ui().flavor(), SchemeFlavor::Dark);
    assert_eq!(
        app.settings.language_appearance.theme,
        ThemeMode::Dark,
        "设置页那一行的档位要跟着改"
    );
    // 落盘：真的过了文件（重新打开同一个配置读回来就是 dark）
    assert_eq!(
        SettingsBridge::with_path(dir.join("config/launcher.json"))
            .load()
            .1,
        ThemeMode::Dark,
        "主题档要落盘"
    );

    // 选 Silver（= 浅色主方案）
    let _ = app.update(Message::Page(pages::Message::Theme(ThemeMode::Light)));
    assert_eq!(app.board_name(), "silver");
    assert_eq!(app.ui().flavor(), SchemeFlavor::Light);
    assert_eq!(
        SettingsBridge::with_path(dir.join("config/launcher.json"))
            .load()
            .1,
        ThemeMode::Light
    );

    // 同一档再点一次：不许白重建
    let refreshes = app.refreshes;
    let _ = app.update(Message::Page(pages::Message::Theme(ThemeMode::Light)));
    assert_eq!(app.refreshes, refreshes, "同一档不该再重建视图模型");
    std::fs::remove_dir_all(&dir).ok();
}