<template>
  <span class="kole-popconfirm" ref="root">
    <span @click="toggle">
      <slot />
    </span>
    <teleport to="body">
      <div
        v-if="open"
        class="kole-popconfirm-pop"
        :class="'placement-' + placement"
        :style="popStyle"
      >
        <div class="kole-popconfirm-inner">
          <span class="kole-popconfirm-icon">!</span>
          <span class="kole-popconfirm-title">{{ title }}</span>
        </div>
        <div class="kole-popconfirm-actions">
          <button class="kole-popconfirm-btn" @click="cancel">{{ cancelText }}</button>
          <button class="kole-popconfirm-btn primary" @click="confirm">{{ okText }}</button>
        </div>
      </div>
    </teleport>
  </span>
</template>

<script setup>
import { ref, computed, watch, onBeforeUnmount } from 'vue';

const props = defineProps({
  modelValue: { type: Boolean, default: undefined },  // 受控打开
  title: { type: String, required: true },
  okText: { type: String, default: '确定' },
  cancelText: { type: String, default: '取消' },
  placement: { type: String, default: 'bottom' }       // bottom | top
});
const emit = defineEmits(['update:modelValue', 'confirm', 'cancel']);

const root = ref(null);
const innerOpen = ref(false);
const open = computed(() => props.modelValue !== undefined ? props.modelValue : innerOpen.value);

const popStyle = ref({});
function syncPosition() {
  if (!root.value || !open.value) return;
  const r = root.value.getBoundingClientRect();
  popStyle.value = props.placement === 'top'
    ? { left: r.left + 'px', bottom: (window.innerHeight - r.top) + 'px' }
    : { left: r.left + 'px', top: r.bottom + 8 + 'px' };
}

function setOpen(v) {
  if (props.modelValue !== undefined) emit('update:modelValue', v);
  else innerOpen.value = v;
  if (v) { syncPosition(); document.addEventListener('click', onDocClick, true); window.addEventListener('resize', syncPosition); }
  else { document.removeEventListener('click', onDocClick, true); window.removeEventListener('resize', syncPosition); }
}
function toggle() { setOpen(!open.value); }
function confirm() { emit('confirm'); setOpen(false); }
function cancel() { emit('cancel'); setOpen(false); }
function onDocClick(e) {
  if (root.value && root.value.contains(e.target)) return;
  setOpen(false);
}

watch(() => props.modelValue, (v) => {
  if (v) { syncPosition(); document.addEventListener('click', onDocClick, true); window.addEventListener('resize', syncPosition); }
  else { document.removeEventListener('click', onDocClick, true); window.removeEventListener('resize', syncPosition); }
});
onBeforeUnmount(() => { document.removeEventListener('click', onDocClick, true); window.removeEventListener('resize', syncPosition); });
</script>

<!-- 样式对齐 组件2.txt Popconfirm 规范 -->
<style scoped>
.kole-popconfirm { position: relative; display: inline-block; }
.kole-popconfirm-pop { position: fixed; z-index: 100; min-width: 220px; background: #fff; border: 1px solid #E8ECF1;
  border-radius: 6px; box-shadow: 0 4px 12px rgba(0,0,0,0.12); padding: 12px 14px; }
.kole-popconfirm-inner { display: flex; gap: 8px; }
.kole-popconfirm-icon { flex-shrink: 0; width: 16px; height: 16px; border-radius: 50%; background: #8C5A00; color: #fff;
  display: inline-flex; align-items: center; justify-content: center; font-size: 12px; font-weight: 700; margin-top: 2px; }
.kole-popconfirm-title { font-size: 14px; color: #262626; line-height: 1.5; }
.kole-popconfirm-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 12px; }
.kole-popconfirm-btn { height: 28px; padding: 0 12px; border-radius: 4px; font-size: 13px; cursor: pointer;
  border: 1px solid #E8ECF1; background: #fff; color: #262626; transition: border-color .15s, color .15s; }
.kole-popconfirm-btn:hover { color: #2F54EB; border-color: #2F54EB; }
.kole-popconfirm-btn.primary { background: #2F54EB; border-color: #2F54EB; color: #fff; }
.kole-popconfirm-btn.primary:hover { background: #1D39C4; border-color: #1D39C4; color: #fff; }
</style>
