// ── components.js — shared UI primitives ─────────────────
//
// One-stop helpers for the repeating bar / pill / chart-header
// patterns across pages. Renderers return HTML strings — callers
// inject via innerHTML and wire events on the resulting DOM.

import { escapeHTML } from './utils.js';

// ── Bar primitives ───────────────────────────────────────

// barTrack — just the percentage bar (no label/count head).
//   value:    numeric value to display
//   max:      ceiling for percentage; 0/falsy means 0%
//   fwClass:  optional framework slug (openclaw, claude-code, hermes, …)
//             — applied as fw-<slug> on the fill for color
//   size:     'xs' | 'sm' | 'md' | 'lg' (default 'md')
//   modifier: extra class on the fill (e.g. 'model', 'input', 'output')
export function barTrack({ value = 0, max = 0, fwClass = '', size = 'md', modifier = '' } = {}) {
  const pct = max > 0 ? Math.min(100, (value / max) * 100).toFixed(1) : '0';
  const fillClasses = ['am-bar-fill'];
  if (fwClass) fillClasses.push('fw-' + fwClass);
  if (modifier) fillClasses.push(modifier);
  return `<div class="am-bar-track am-bar-track--${escapeHTML(size)}"><div class="${fillClasses.join(' ')}" style="width:${pct}%"></div></div>`;
}

// barRow — head (name + count) plus track.
//   countDisplay overrides the rendered count text (e.g. "238" vs "238 events").
export function barRow({ name = '', count = 0, countDisplay, max = 0, fwClass = '', size = 'sm', modifier = '' } = {}) {
  const display = countDisplay != null ? countDisplay : count;
  return `
    <div class="am-bar-row">
      <div class="am-bar-row-head">
        <span class="am-bar-row-name">${escapeHTML(String(name))}</span>
        <span class="am-bar-row-count">${escapeHTML(String(display))}</span>
      </div>
      ${barTrack({ value: count, max, fwClass, size, modifier })}
    </div>`;
}

// barRankList — ranked list of barRows wrapped in <ul class="am-bar-list">.
//   items:       array of arbitrary objects
//   mapItem:     fn(item) → { name, count, countDisplay?, fwClass?, modifier? }
//   maxOverride: ceiling override; default = max of items' counts
//   size:        bar height (default 'xs' for ranked lists)
//   emptyText:   shown when items is empty
export function barRankList(items, { mapItem, maxOverride, size = 'xs', emptyText = 'No data' } = {}) {
  if (!items || items.length === 0) {
    return `<p class="empty-state" style="padding:0.5rem 0;font-size:0.8rem">${escapeHTML(emptyText)}</p>`;
  }
  const mapped = items.map(item => (mapItem ? mapItem(item) : { name: item.name, count: item.count }));
  const max = maxOverride != null ? maxOverride : Math.max(1, ...mapped.map(m => Number(m.count) || 0));
  const rows = mapped.map(m => `<li>${barRow({ ...m, max, size })}</li>`).join('');
  return `<ul class="am-bar-list">${rows}</ul>`;
}

// ── Pill primitives ──────────────────────────────────────

// metricPill — small label + bold value, optional meta line.
//   value:     pre-escaped HTML when valueHTML=true, else escaped as text
//   valueId:   id attribute (for animateCounter targets)
//   variant:   'insight' | 'total' | 'range' | '' (default — standalone metric pill)
//   alert:     adds .alert to the pill (turns value red)
export function metricPill({ label, value = '-', valueId = '', valueHTML = false, meta = '', variant = '', alert = false } = {}) {
  const classes = ['am-pill'];
  if (variant) classes.push('am-pill--' + variant);
  if (alert) classes.push('alert');
  const idAttr = valueId ? ` id="${escapeHTML(valueId)}"` : '';
  const rendered = valueHTML ? value : escapeHTML(String(value));
  const metaLine = meta ? `<span class="am-pill-meta">${escapeHTML(String(meta))}</span>` : '';
  return `
    <div class="${classes.join(' ')}">
      <span class="am-pill-label">${escapeHTML(String(label))}</span>
      <strong class="am-pill-value"${idAttr}>${rendered}</strong>
      ${metaLine}
    </div>`;
}

// metricStrip — flex/grid container around a list of pill specs.
//   variant: '' | 'insights' (4-up grid) | 'totals' (tight inline pills)
export function metricStrip(pills, { variant = '', className = '' } = {}) {
  const classes = ['am-pill-strip'];
  if (variant) classes.push('am-pill-strip--' + variant);
  if (className) classes.push(className);
  return `<div class="${classes.join(' ')}">${pills.map(p => metricPill(p)).join('')}</div>`;
}

// ── Chart header ─────────────────────────────────────────

// chartHeader — title + optional subtitle on the left, raw controls HTML on the right.
//   controls is passed through unchanged (legend/buttons/tabs vary by chart).
export function chartHeader({ title = '', subtitle = '', controls = '' } = {}) {
  const subtitleHTML = subtitle ? `<span class="am-chart-subtitle">${escapeHTML(subtitle)}</span>` : '';
  const controlsHTML = controls ? `<div class="am-chart-controls">${controls}</div>` : '';
  return `
    <div class="am-chart-header">
      <div class="am-chart-title-group">
        <span class="am-chart-title">${escapeHTML(title)}</span>
        ${subtitleHTML}
      </div>
      ${controlsHTML}
    </div>`;
}