@use 'sass:list';
@use 'sass:map';
@use 'sass:meta';
@use 'sass:string';
@use 'iro-sass/src/iro-sass' as iro;
@use 'iro-sass/src/props';
@use '../core.vars' as core;

@forward 'button.vars';
@use 'button.vars' as vars;

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

    &:link,
    &:visited,
    &:enabled {
        &:hover,
        &:focus-visible {
            color:            props.get($theme, list.join($key, --hover --label)...);
            background-color: props.get($theme, list.join($key, --hover --bg)...);
            border-color:     transparent;
        }

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

@mixin -apply-static-theme($theme, $key: ()) {
    color:            props.get($theme, list.join($key, --disabled --label)...);
    background-color: props.get($theme, list.join($key, --disabled --bg)...);
    border-color:     transparent;

    &::after {
        outline-color: props.get($theme, list.join($key, --key-focus --border)...);
        box-shadow:
            0
            0
            0
            calc(props.get(vars.$key-focus--border-width) + props.get(vars.$key-focus--outline-width))
            props.get($theme, list.join($key, --key-focus --outline)...);
    }
    
    @include iro.bem-modifier('outline') {
        background-color: transparent;
        border-color:     props.get($theme, list.join($key, --disabled --outline-border)...);
    }

    @include -apply-theme($theme, $key);

    @include iro.bem-modifier('primary') {
        @include -apply-theme($theme, list.join($key, --primary));
    }
}

@mixin styles {
    @include props.materialize(meta.module-variables('vars'));

    @include iro.bem-object('button') {
        position:         relative;
        display:          inline-block;
        padding-block:    props.get(vars.$pad-b);
        padding-inline:   props.get(vars.$pad-i);
        font-size:        props.get(vars.$font-size);
        font-weight:      500;
        line-height:      props.get(vars.$line-height);
        text-align:       center;
        text-decoration:  none;
        border:           props.get(vars.$border-width) solid transparent;
        border-radius:    props.get(vars.$rounding);

        &::after {
            position:       absolute;
            inset:          calc(-1 * props.get(vars.$border-width) - props.get(vars.$key-focus--border-offset));
            z-index:        1;
            display:        none;
            pointer-events: none;
            content:        '';
            border-radius:  calc(props.get(vars.$rounding) + props.get(vars.$key-focus--border-offset));
            outline:        transparent solid props.get(vars.$key-focus--border-width);
        }

        &:link,
        &:visited,
        &:enabled {
            &:focus-visible {
                &::after {
                    display: block;
                }
            }
        }

        @include iro.bem-elem('label') {
            margin-inline: props.get(vars.$pad-i-label);
        }
    
        @include iro.bem-modifier('block') {
            display: block;
        }
    
        @include iro.bem-modifier('outline') {
            background-color: transparent;
        }

        @each $mod, $pad-i, $pad-i-label, $pad-b, $font-size in vars.$sizes {
            @include iro.bem-modifier($mod) {
                padding-block:  props.get($pad-b);
                padding-inline: props.get($pad-i);
                font-size:      props.get($font-size);

                @include iro.bem-elem('label') {
                    margin-inline: props.get($pad-i-label);
                }
            }
        }

        @include -apply-static-theme(vars.$default-theme);

        @each $theme in map.keys(props.get(vars.$themes)) {
            @include iro.bem-modifier(string.slice($theme, 3)) {
                @include -apply-theme(vars.$themes, $theme);
            }
        }

        @each $theme in map.keys(props.get(vars.$static-themes)) {
            @include iro.bem-modifier(string.slice($theme, 3)) {
                @include -apply-static-theme(vars.$static-themes, $theme);
            }
        }
    
        @include iro.bem-modifier('round') {
            inline-size:    calc(1em * props.get(vars.$line-height) + 2 * props.get(vars.$pad-b));
            padding-inline: 0;
            border-radius:  100em;
        }
    }
}