@use 'sass:list';
@use 'iro-sass/src/index' as iro;
@use '../functions' as fn;

$themes: primary accent positive negative warning;

@mixin button-variant($theme: null) {
    $key: if($theme == null, (), --#{$theme});

    &:link,
    &:visited,
    &:enabled {
        border-color:     fn.color(list.join($key, --bg));
        background-color: fn.color(list.join($key, --bg));
        color:            fn.color(list.join($key, --label));
    }
    
    @include iro.bem-modifier('outline') {
        &:link,
        &:visited,
        &:enabled {
            background-color: transparent;
            color:            fn.color(list.join($key, --outline-label));
        }
    }

    &:link,
    &:visited,
    &:enabled {
        &:hover {
            border-color:     fn.color(list.join($key, --hover --bg));
            background-color: fn.color(list.join($key, --hover --bg));
            color:            fn.color(list.join($key, --hover --label));
        }

        &:active {
            border-color:     fn.color(list.join($key, --active --bg));
            background-color: fn.color(list.join($key, --active --bg));
            color:            fn.color(list.join($key, --active --label));
        }
    }
}

@include iro.props-namespace('button') {
    @include iro.props-store((
        --dims: (
            --line-height: 1.4,
            --pad-i:       fn.global-dim(--size --225),
            --pad-b:       fn.global-dim(--size --65),
            --rounding:    10em,

            --lg: (
                --pad-i: fn.global-dim(--size --300),
                --pad-b: fn.global-dim(--size --100),
            ),
        ),
        --colors: (
            --bg:            fn.global-color(--border-mute),
            --label:         fn.global-color(--text),
            --outline-label: fn.global-color(--text),

            --hover: (
                --bg:     fn.global-color(--border),
                --label:  fn.global-color(--heading),
            ),
            --active: (
                --bg:     fn.global-color(--border-strong),
                --label:  fn.global-color(--heading),
            ),
            --disabled: (
                --bg:     fn.global-color(--border-mute),
                --label:  fn.global-color(--text-disabled),
            ),
            --key-focus: (
                --bg:     fn.global-color(--base --50),
                --label:  fn.global-color(--heading),
                --border: fn.global-color(--yellow-static --400),
            ),
            
            --primary: (
                --bg:            fn.global-color(--base --800),
                --label:         fn.global-color(--base --800-text),
                --outline-label: fn.global-color(--text),

                --hover: (
                    --bg:     fn.global-color(--base --900),
                    --label:  fn.global-color(--base --900-text),
                ),
                --active: (
                    --bg:     fn.global-color(--base --900),
                    --label:  fn.global-color(--base --900-text),
                ),
            ),
        ),
    ));

    @each $theme in $themes {
        @if $theme != primary {
            @include iro.props-store((
                --colors: (
                    --#{$theme}: (
                        --bg:            fn.global-color(--#{$theme} --900),
                        --label:         fn.global-color(--#{$theme} --900-text),
                        --outline-label: fn.global-color(--#{$theme} --1000),

                        --hover: (
                            --bg:     fn.global-color(--#{$theme} --1000),
                            --label:  fn.global-color(--#{$theme} --1000-text),
                        ),
                        --active: (
                            --bg:     fn.global-color(--#{$theme} --1100),
                            --label:  fn.global-color(--#{$theme} --1100-text),
                        ),
                    ),
                ),
            ));
        }
    }

    @include iro.bem-object(iro.props-namespace()) {
        display:          inline-block;
        padding-block:    fn.dim(--pad-b);
        padding-inline:   fn.dim(--pad-i);
        border:           2px solid transparent;
        border-radius:    fn.dim(--rounding);
        border-color:     fn.color(--disabled --bg);
        background-color: fn.color(--disabled --bg);
        color:            fn.color(--disabled --label);
        font-weight:      500;
        line-height:      fn.dim(--line-height);
        text-align:       center;
        text-decoration:  none;
        vertical-align:   top;
    
        @include iro.bem-modifier('block') {
            display: block;
        }
    
        @include iro.bem-modifier('outline') {
            background-color: transparent;
            box-shadow:       none;
        }

        @include iro.bem-modifier('lg') {
            padding-block:  fn.dim(--lg --pad-b);
            padding-inline: fn.dim(--lg --pad-i);
        }

        @include button-variant();
    
        @each $theme in $themes {
            @include iro.bem-modifier($theme) {
                @include button-variant($theme);
            }
        }

        &:link,
        &:visited,
        &:enabled {
            &:focus-visible {
                border-color:     fn.color(--key-focus --border);
                background-color: fn.color(--key-focus --bg);
                color:            fn.color(--key-focus --label);
            }
        }
    
        @include iro.bem-modifier('round') {
            inline-size:    calc(1em * fn.dim(--line-height) + 2 * fn.dim(--pad-b));
            padding-inline: 0;
            border-radius:  100em;
        }
    }
}