use client_domain::{
    BoundingBox, Color, DrawCommand, FontMetrics, FontSize, HAlign, RenderEngine, ThemeConfig,
    VAlign,
};

fn metrics() -> FontMetrics {
    FontMetrics {
        small: (6, 10),
        large: (10, 20),
    }
}

fn theme() -> ThemeConfig {
    ThemeConfig::default()
}

fn bounds(w: u16, h: u16) -> BoundingBox {
    BoundingBox::new(0, 0, w, h)
}

#[test]
fn textblock_renders_plain_text() {
    let engine = RenderEngine::new(metrics(), theme());
    let cmds = engine.render_text("hello", bounds(100, 40), HAlign::Left, VAlign::Top);

    assert_eq!(cmds.len(), 1);
    assert_eq!(cmds[0].text, "hello");
    assert_eq!(cmds[0].x, 0);
    assert_eq!(cmds[0].y, 0);
    assert_eq!(cmds[0].color, theme().text);
    assert_eq!(cmds[0].font, FontSize::Small);
}

#[test]
fn text_centered_horizontally() {
    let engine = RenderEngine::new(metrics(), theme());
    // "hi" = 12px, bounds = 100px → offset = 44
    let cmds = engine.render_text("hi", bounds(100, 40), HAlign::Center, VAlign::Top);

    assert_eq!(cmds[0].x, 44);
}

#[test]
fn text_centered_vertically() {
    let engine = RenderEngine::new(metrics(), theme());
    // 1 line = 10px height, bounds = 40px → offset = 15
    let cmds = engine.render_text("hi", bounds(100, 40), HAlign::Left, VAlign::Middle);

    assert_eq!(cmds[0].y, 15);
}

#[test]
fn text_wraps_and_stacks_lines() {
    let engine = RenderEngine::new(metrics(), theme());
    // "hello world" at 40px wide → "hello" + "world", each at 6x10
    let cmds = engine.render_text("hello world", bounds(40, 100), HAlign::Left, VAlign::Top);

    assert_eq!(cmds.len(), 2);
    assert_eq!(cmds[0].text, "hello");
    assert_eq!(cmds[0].y, 0);
    assert_eq!(cmds[1].text, "world");
    assert_eq!(cmds[1].y, 10);
}

#[test]
fn colored_markup_produces_colored_spans() {
    let engine = RenderEngine::new(metrics(), theme());
    let cmds = engine.render_text("{accent}hi{/}", bounds(100, 40), HAlign::Left, VAlign::Top);

    assert_eq!(cmds.len(), 1);
    assert_eq!(cmds[0].text, "hi");
    assert_eq!(cmds[0].color, theme().accent);
}

#[test]
fn bounds_offset_applied() {
    let engine = RenderEngine::new(metrics(), theme());
    let b = BoundingBox::new(10, 20, 100, 40);
    let cmds = engine.render_text("hi", b, HAlign::Left, VAlign::Top);

    assert_eq!(cmds[0].x, 10);
    assert_eq!(cmds[0].y, 20);
}