<script setup lang="ts">
const props = defineProps<{
  content: string
}>()

/**
 * Basic markdown rendering: bold, line breaks, unordered lists.
 * Returns sanitized HTML string for v-html usage.
 */
const renderedHtml = computed(() => {
  if (!props.content) return ''

  let html = props.content

  // Escape HTML entities to prevent XSS
  html = html
    .replace(/&/g, '&amp;')
    .replace(/</g, '&lt;')
    .replace(/>/g, '&gt;')

  // Convert **bold** to <strong>
  html = html.replace(/\*\*(.+?)\*\*/g, '<strong>$1</strong>')

  // Convert *italic* to <em>
  html = html.replace(/\*(.+?)\*/g, '<em>$1</em>')

  // Convert `code` to <code>
  html = html.replace(/`([^`]+)`/g, '<code class="md-code">$1</code>')

  // Process lines for list items
  const lines = html.split('\n')
  const result: string[] = []
  let inList = false

  for (const line of lines) {
    const trimmed = line.trim()

    if (trimmed.startsWith('- ')) {
      if (!inList) {
        result.push('<ul class="md-list">')
        inList = true
      }
      result.push(`<li>${trimmed.slice(2)}</li>`)
    } else {
      if (inList) {
        result.push('</ul>')
        inList = false
      }
      if (trimmed === '') {
        result.push('<br>')
      } else {
        result.push(`<p class="md-para">${line}</p>`)
      }
    }
  }

  if (inList) {
    result.push('</ul>')
  }

  return result.join('\n')
})
</script>

<template>
  <div
    class="md-rendered"
    v-html="renderedHtml"
  />
</template>

<style scoped>
.md-rendered {
  color: var(--mood-text);
  line-height: 1.5;
}

.md-rendered :deep(.md-list) {
  list-style-type: disc;
  padding-left: 1.25em;
  margin: 0.125em 0;
}

.md-rendered :deep(.md-list li) {
  padding: 0;
  line-height: 1.4;
}

.md-rendered :deep(.md-para) {
  margin: 0.1em 0;
}

.md-rendered :deep(.md-code) {
  font-family: monospace;
  font-size: 0.875em;
  padding: 0.1em 0.35em;
  border-radius: 4px;
  background: color-mix(in srgb, var(--mood-accent) 8%, var(--mood-bg));
  color: var(--mood-text);
}

.md-rendered :deep(strong) {
  font-weight: 700;
  color: var(--mood-text);
}

.md-rendered :deep(em) {
  font-style: italic;
  color: var(--mood-text-muted);
  font-size: 0.875em;
}
</style>
