import { Component, computed, input, output } from '@angular/core';

@Component({
  selector: 'app-setting-slider', standalone: true,
  template: `
    <div class="slider-heading"><span>{{label()}}</span><output>{{display()}}</output></div>
    <input type="range" min="0" [max]="values().length - 1" step="1" [value]="index()"
      [disabled]="disabled()" [attr.aria-label]="label()" [attr.aria-valuetext]="display()"
      [style.--fill]="(index() / (values().length - 1) * 100) + '%'"
      (input)="change($any($event.target).value)" />
    <div class="slider-ends"><span>{{labels()[0] || values()[0]}}</span><span>{{labels().at(-1) || values().at(-1)}}</span></div>
    @if(hint()){<p>{{hint()}}</p>}
  `,
  styles: [`
    :host{display:block;min-width:0;padding:14px 16px;background:var(--app-surface-soft, #f8fafc);border:1px solid var(--app-border, #e2e8f0);border-radius:14px;font-size:13px;color:var(--app-text-control, #334155)}
    .slider-heading,.slider-ends{display:flex;align-items:center;justify-content:space-between;gap:10px}
    .slider-heading{font-weight:600}output{color:var(--app-exploration-text, #4f46e5);font-size:12px;white-space:nowrap}.slider-ends{font-size:11px;color:var(--app-text-muted, #64748b)}
    input{appearance:none;display:block;box-sizing:border-box;width:100%;height:6px;border:0;border-radius:10px;margin:20px 0 12px;background:linear-gradient(to right,#6366f1 var(--fill),var(--app-primary-soft, #dbe3ee) var(--fill));cursor:pointer}
    input::-webkit-slider-thumb{appearance:none;width:18px;height:18px;border-radius:50%;background:var(--app-surface, #fff);border:2px solid #6366f1;box-shadow:0 2px 6px #33415526}
    input::-moz-range-thumb{width:14px;height:14px;border-radius:50%;background:var(--app-surface, #fff);border:2px solid #6366f1}
    input:focus-visible{outline:2px solid var(--app-primary-border, #a5b4fc);outline-offset:5px}input:disabled{opacity:.5;cursor:default}p{margin:10px 0 0;font-size:12px;line-height:1.6;color:var(--app-text-muted, #64748b)}
  `]
})
export class SettingSliderComponent {
  label = input.required<string>();
  value = input.required<string | number>();
  values = input.required<(string | number)[]>();
  labels = input<string[]>([]);
  hint = input('');
  disabled = input(false);
  valueChange = output<any>();
  index = computed(() => {
    const exact = this.values().indexOf(this.value());
    if(exact >= 0) return exact;
    if(typeof this.value() === 'number') return this.values().reduce<number>((best, v, i) => Math.abs(Number(v)-Number(this.value())) < Math.abs(Number(this.values()[best])-Number(this.value())) ? i : best, 0);
    return 0;
  });
  display = computed(() => {
    const exact = this.values().indexOf(this.value());
    return exact >= 0 ? this.labels()[exact] || String(this.value()) : String(this.value()) + (typeof this.value() === 'number' ? ' 秒' : '');
  });
  change(index: string) { this.valueChange.emit(this.values()[Number(index)]); }
}

export const REASONING_VALUES = ['default','none','minimal','low','medium','high','xhigh','max'];
export const REASONING_LABELS = ['模型默认','关闭 · none','最低 · minimal','低 · low','中 · medium','高 · high','极高 · xhigh','最高 · max'];