RUWIO/src/components/FontPicker.vue

<script setup lang="ts">
import { computed, onBeforeUnmount, onMounted, ref, watch } from 'vue'
import { PhCaretDown, PhCheck, PhTrash, PhUploadSimple } from '@phosphor-icons/vue'
import {
  AVAILABLE_FONTS,
  BUILTIN_FONTS,
  fontDef,
  removeCustomFont,
  uploadCustomFont,
} from '@/lib/fonts'

const props = defineProps<{
  // Empty string = system-sans (no override). Mirrors the storage
  // shape: TextAsset.fontFamily is undefined for the default.
  modelValue: string
}>()
const emit = defineEmits<{ 'update:modelValue': [value: string] }>()

const open = ref(false)
const trigger = ref<HTMLButtonElement | null>(null)
const popover = ref<HTMLDivElement | null>(null)
const fileInput = ref<HTMLInputElement | null>(null)
const errorMsg = ref<string | null>(null)

const selected = computed(() => fontDef(props.modelValue || undefined))

const customFonts = computed(() => AVAILABLE_FONTS.value.filter(f => f.custom))

function toggle() {
  open.value = !open.value
}

function pick(id: string) {
  // Storage convention: 'system-sans' clears the override.
  emit('update:modelValue', id === 'system-sans' ? '' : id)
  open.value = false
  trigger.value?.focus()
}

function onUploadClick() {
  errorMsg.value = null
  fileInput.value?.click()
}

async function onFileChange(e: Event) {
  const input = e.target as HTMLInputElement
  const file = input.files?.[0]
  // Reset value so picking the same file twice still triggers change.
  input.value = ''
  if (!file) return
  try {
    const newFont = await uploadCustomFont(file)
    // Auto-select the freshly uploaded font.
    emit('update:modelValue', newFont.id)
  } catch (err) {
    errorMsg.value = err instanceof Error ? err.message : 'Upload failed.'
  }
}

function onDelete(id: string, e: MouseEvent) {
  e.stopPropagation()
  // If the currently selected font is the one being deleted, fall
  // back to system sans — otherwise the asset is left pointing at a
  // dead id and silently renders in the fallback family.
  if (props.modelValue === id) emit('update:modelValue', '')
  removeCustomFont(id)
}

function onWindowPointerDown(e: PointerEvent) {
  if (!open.value) return
  const t = e.target as Node | null
  if (!t) return
  if (trigger.value?.contains(t)) return
  if (popover.value?.contains(t)) return
  open.value = false
}

function onKeydown(e: KeyboardEvent) {
  if (!open.value) return
  if (e.key === 'Escape') {
    e.preventDefault()
    open.value = false
    trigger.value?.focus()
  }
}

onMounted(() => {
  window.addEventListener('pointerdown', onWindowPointerDown, true)
  window.addEventListener('keydown', onKeydown)
})
onBeforeUnmount(() => {
  window.removeEventListener('pointerdown', onWindowPointerDown, true)
  window.removeEventListener('keydown', onKeydown)
})

const popStyle = ref<Record<string, string>>({})
watch(open, async (isOpen) => {
  if (!isOpen) return
  await Promise.resolve()
  const t = trigger.value
  if (!t) return
  const r = t.getBoundingClientRect()
  popStyle.value = {
    left: `${r.left}px`,
    top: `${r.bottom + 4}px`,
    minWidth: `${r.width}px`,
  }
})

function isActive(id: string): boolean {
  return (props.modelValue || 'system-sans') === id
}
</script>

<template>
  <div class="font-picker">
    <button
      ref="trigger"
      type="button"
      class="trigger"
      :class="{ open }"
      :aria-expanded="open"
      @click="toggle"
    >
      <span class="label" :style="{ fontFamily: selected.family }">{{ selected.label }}</span>
      <PhCaretDown :size="12" class="caret" />
    </button>
    <input
      ref="fileInput"
      type="file"
      accept=".woff2,.woff,.ttf,.otf,font/woff2,font/woff,font/ttf,font/otf"
      class="hidden-file-input"
      @change="onFileChange"
    />
    <Teleport to="body">
      <div
        v-if="open"
        ref="popover"
        class="font-popover"
        :style="popStyle"
        role="listbox"
      >
        <div class="font-popover-section">
          <button
            v-for="f in BUILTIN_FONTS"
            :key="f.id"
            type="button"
            class="font-option"
            :class="{ active: isActive(f.id) }"
            role="option"
            :aria-selected="isActive(f.id)"
            @click="pick(f.id)"
          >
            <PhCheck
              :size="12"
              class="check"
              :style="{ visibility: isActive(f.id) ? 'visible' : 'hidden' }"
            />
            <span class="option-label" :style="{ fontFamily: f.family }">{{ f.label }}</span>
          </button>
        </div>

        <div v-if="customFonts.length > 0" class="font-popover-divider"></div>

        <div v-if="customFonts.length > 0" class="font-popover-section">
          <div class="section-title">Your fonts</div>
          <button
            v-for="f in customFonts"
            :key="f.id"
            type="button"
            class="font-option"
            :class="{ active: isActive(f.id) }"
            role="option"
            :aria-selected="isActive(f.id)"
            @click="pick(f.id)"
          >
            <PhCheck
              :size="12"
              class="check"
              :style="{ visibility: isActive(f.id) ? 'visible' : 'hidden' }"
            />
            <span class="option-label" :style="{ fontFamily: f.family }">{{ f.label }}</span>
            <button
              type="button"
              class="delete-custom"
              title="Remove this font"
              @click="onDelete(f.id, $event)"
            >
              <PhTrash :size="12" />
            </button>
          </button>
        </div>

        <div class="font-popover-divider"></div>

        <button type="button" class="font-option upload-btn" @click="onUploadClick">
          <PhUploadSimple :size="12" class="check" />
          <span class="option-label">Upload font…</span>
        </button>
        <div v-if="errorMsg" class="upload-error">{{ errorMsg }}</div>
      </div>
    </Teleport>
  </div>
</template>

<style scoped>
.font-picker {
  position: relative;
  width: 100%;
}

.trigger {
  display: flex;
  align-items: center;
  gap: 6px;
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  padding: 6px 8px;
  font-size: 12px;
  text-transform: none;
  letter-spacing: 0;
  cursor: pointer;
  text-align: left;
}

.trigger:hover {
  border-color: var(--border-strong, var(--border));
}

.trigger.open,
.trigger:focus-visible {
  border-color: var(--accent);
  outline: none;
}

.trigger .label {
  flex: 1 1 auto;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.trigger .caret {
  flex-shrink: 0;
  color: var(--text-dim);
  transition: transform 0.15s ease;
}

.trigger.open .caret {
  transform: rotate(180deg);
}

.hidden-file-input {
  position: absolute;
  width: 0;
  height: 0;
  opacity: 0;
  pointer-events: none;
}
</style>

<style>
/* Popover is teleported to <body>, so the styles need to be global. */
.font-popover {
  position: fixed;
  z-index: 1000;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.18);
  padding: 4px;
  display: flex;
  flex-direction: column;
  gap: 1px;
  max-height: 360px;
  overflow-y: auto;
}

.font-popover-section {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.font-popover-divider {
  height: 1px;
  background: var(--border);
  margin: 4px 2px;
}

.font-popover .section-title {
  font-size: 9px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-dim);
  padding: 4px 8px 2px;
}

.font-popover .font-option {
  display: flex;
  align-items: center;
  gap: 6px;
  width: 100%;
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  color: var(--text);
  padding: 6px 8px;
  font-size: 13px;
  text-transform: none;
  letter-spacing: 0;
  cursor: pointer;
  text-align: left;
}

.font-popover .font-option:hover {
  background: var(--panel-hover, var(--panel-alt));
}

.font-popover .font-option.active {
  background: var(--accent-soft);
  color: var(--accent);
}

.font-popover .check {
  flex-shrink: 0;
}

.font-popover .option-label {
  flex: 1 1 auto;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.font-popover .delete-custom {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  color: var(--text-dim);
  cursor: pointer;
  opacity: 0;
}

.font-popover .font-option:hover .delete-custom {
  opacity: 1;
}

.font-popover .delete-custom:hover {
  color: var(--danger, #ff6b6b);
  border-color: var(--danger, #ff6b6b);
}

.font-popover .upload-btn {
  color: var(--text-dim);
}

.font-popover .upload-btn:hover {
  color: var(--text);
}

.font-popover .upload-error {
  font-size: 11px;
  color: var(--danger, #ff6b6b);
  padding: 4px 8px;
}
</style>