<template>
  <div>
    <button class="openForm" @click="openForm" v-if="!formVisible">编辑</button>
    <button @click="closeForm" v-if="formVisible">取消编辑</button>
    <hr />
    <form
      v-if="formVisible"
      @submit.prevent="addMemo"
      class="draggable-form"
      :style="{ top: formPosition.y + 'px', left: formPosition.x + 'px' }"
    >
      <div class="form-title" @mousedown="startDrag">{{ formTitle }}</div>
      <div class="form-content">
        <input type="reset" value="重置" />
        <textarea v-model="newItem" rows="10" placeholder="请输入备注内容"></textarea>
        <button type="submit" class="addBtn">添加</button>
      </div>
    </form>
    <div class="memo" @click="handleMemoAction">
      <div v-for="(memo, index) in memos" :key="index" class="item">
        <span class="item-number">{{ index + 1 }}.</span>
        <button v-if="showActions && !memo.finished" @click="completeMemo(index)">完成</button>
        <button v-if="showActions && memo.finished" @click="cancelMemo(index)">取消</button>
        <span class="text-content" :class="{ content: true, finish: memo.finished }">
          {{ memo.name }}
        </span>
        <button v-if="showActions && memo.finished" @click="reworkMemo(index)">修改</button>
        <button
          class="deleteBtn"
          v-if="showActions && memo.finished"
          v-show="noindex == index ? false : true"
          @click="deleteMemo(index)"
        >
          删除
        </button>
        <span v-show="noindex == index ? true : false" class="alter">
          <textarea v-model="newItem"></textarea>
          <button @click="csu">提交</button>
        </span>
      </div>
    </div>
  </div>
</template>
<script setup>
import { ref, reactive, onMounted } from 'vue'
const formVisible = ref(false)
const newItem = ref('')
const memos = ref([])
const showActions = ref(false)
const noindex = ref(-1)
const openForm = () => {
  formVisible.value = true
  showActions.value = true
}
const closeForm = () => {
  formVisible.value = false
  showActions.value = false
}
const reworkMemo = (index) => {
  if (newItem.value === '' || false) {
    newItem.value = memos.value[index].name
    noindex.value = index
    formVisible.value = false
    showActions.value = false
  } else {
    newItem.value = ''
    noindex.value = -1
  }
}
const csu = () => {
  if (noindex.value === -1) {
    return
  }
  memos.value[noindex.value].name = newItem.value
  // 取消备忘录的完成状态
  memos.value[noindex.value].finished = false
  noindex.value = -1
  newItem.value = ''
  saveTodo()
}
const addMemo = () => {
  if (newItem.value.trim() !== '') {
    memos.value.push({ name: newItem.value, finished: false })
    newItem.value = ''
    formVisible.value = false
    showActions.value = false
    saveTodo()
  }
}
const completeMemo = (index) => {
  memos.value[index].finished = true
  saveTodo()
}
const cancelMemo = (index) => {
  memos.value[index].finished = false
  saveTodo()
}
const deleteMemo = (index) => {
  memos.value.splice(index, 1)
  updateItemNumbers()
  formVisible.value = false
  showActions.value = false
  saveTodo()
}
const handleMemoAction = (event) => {
  const target = event.target
  if (target.innerHTML === '完成') {
    // handle complete action
  } else if (target.innerHTML === '取消') {
    // handle cancel action
  } else if (target.innerHTML === '删除') {
    // handle delete action
  }
}
const saveTodo = () => {
  localStorage.myLogs = JSON.stringify(memos.value)
}
const loadTodo = () => {
  const savedMemos = JSON.parse(localStorage.myLogs ?? '[]')
  memos.value = savedMemos
  updateItemNumbers()
}
const updateItemNumbers = () => {
  const itemNumbers = document.querySelectorAll('.item-number')
  itemNumbers.forEach((item, index) => {
    item.textContent = index + 1
  })
}
loadTodo()
/*窗口移动事件*/
const formTitle = '鼠标事件绑定标题栏实现拖动功能'
const formPosition = reactive({ x: 0, y: 0 }) // 记录窗口位置的变量
const startDrag = (event) => {
  event.preventDefault() // 阻止默认拖动行为
  const offsetX = event.clientX - formPosition.x
  const offsetY = event.clientY - formPosition.y
  const onDrag = (e) => {
    formPosition.x = e.clientX - offsetX
    formPosition.y = e.clientY - offsetY
  }
  const onStopDrag = () => {
    document.removeEventListener('mousemove', onDrag)
    document.removeEventListener('mouseup', onStopDrag)
  }
  document.addEventListener('mousemove', onDrag)
  document.addEventListener('mouseup', onStopDrag)
}
onMounted(() => {
  const initialX = window.innerWidth / 4 // 窗口水平
  const initialY = window.innerHeight / 4 // 窗口垂直
  formPosition.x = initialX
  formPosition.y = initialY
})
</script>
<style scoped>
/* 全局样式 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  user-select: none;
}
button,
input {
  cursor: pointer;
  margin: 0 5px;
  border: none;
  &:hover {
    color: #fff;
    background-color: hsla(160, 100%, 37%, 0.2);
    box-shadow: 0 0 15px rgba(255, 254, 254, 0.5);
  }
}
/* 拖动窗口的样式 */
.draggable-form {
  position: fixed;
  /* 最小宽度 */
  min-width: 50%;
  background-color: #fff;
  box-shadow: 2px 2px 5px rgba(251, 249, 249, 0.76);
  border-radius: 8px;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 9;
  box-shadow: 0 0 10px rgba(255, 254, 254, 0.5);
}
.form-title {
  text-align: center;
  padding: 5px;
  box-shadow: 0 0 10px rgba(93, 93, 93, 0.537);
  color: hsla(160, 100%, 37%, 1);
  cursor: move;
}
.form-content {
  display: flex;
  textarea {
    flex: 1;
    font-size: 1.5rem;
    background-color: rgba(0, 0, 0, 0.5);
    color: rgb(255, 255, 255);
    text-shadow: 1px 1px 1px rgba(0, 0, 0, 0.5);
    &::placeholder {
      text-align: center;
    }
  }
}
/* 文本显示区样式 */
.memo {
  display: flex;
  align-content: flex-start;
  flex-wrap: wrap;
  margin: 0 20px;
}
.item {
  margin: 5px 10px;
  padding: 0 5px;
  border-radius: 10px;
  background-color: rgba(0, 0, 0, 0.5);
  box-shadow: 0 0 10px rgba(255, 254, 254, 0.5);
  display: flex;
  align-items: center;
  transition: all 0.3s ease-in-out;
  &:hover {
    transform: scale(1.05);
    box-shadow: 0 0 15px rgba(255, 254, 254, 0.5);
  }
}
.item-number {
  /* 粗字体 */
  font-weight: bold;
  color: #fff;
  text-shadow: 1px 1px 1px #030303;
  /* 背景颜色 */
  background-color: #09de69;
  border-radius: 20px;
}
.text-content {
  color: hsla(160, 100%, 37%, 1);
  user-select: text;
  padding: 0 5px;
  &:hover {
    color: #fff;
    background-color: hsla(160, 100%, 37%, 0.2);
  }
}
/* 点击完成按钮显示.finish样式  */
.finish {
  /* 文本-装饰：删除线 */
  /* text-decoration: line-through; */
  background-color: rgb(191, 210, 255);
  color: rgb(255, 250, 250);
  text-shadow: 1px 1px 1px #030303;
  box-shadow:
    inset -2px -2px 3px rgba(255, 255, 255, 0.6),
    inset 2px 2px 3px rgba(0, 0, 0, 0.6);
  border-radius: 20px;
}
/* 点击删除按钮显示.alter样式  */
.deleteBtn {
  color: #f3d303;
  text-shadow: 1px 1px 1px rgb(0, 0, 0);
  background: #ff0000;
  border-radius: 5px;
  border: none;
  margin: 5px;
  padding: 2px;
  /* 粗体 */
  font-weight: bold;
  &:hover {
    background-color: #f3d303;
    color: #ff0505;
  }
}
</style>