<script setup>
import { onMounted, ref, computed, onUnmounted } from 'vue';
import { storeToRefs } from 'pinia'
import useAuths from '@/hooks/useAuths.js';
import { getList as getChatUserList } from '@/apis/chatUserApi'
import { sendPersonalMessage, sendGroupMessage, getAccountList as getChatAccountMessageList } from '@/apis/chatMessageApi'
import useChatStore from "@/stores/chat";
import useUserStore from "@/stores/user";
const { isLogin } = useAuths();
import { useRouter } from 'vue-router'
import { getUrl } from '@/utils/icon'
const router = useRouter();
//聊天存储
const chatStore = useChatStore();
const { userList } = storeToRefs(chatStore);

//用户信息
const userStore = useUserStore();
//发送消息是否为空
const msgIsNullShow = ref(false)
//当前选择用户
const currentSelectUser = ref(null);
//当前输入框的值
const currentInputValue = ref("");
//临时存储的输入框，根据用户id及组name、all组为key，data为value
const inputListDataStore = ref([{ key: "all", value: "" }]);

//当前聊天框显示的消息
const currentMsgContext = computed(() => {
  if (selectIsAll()) {
    return chatStore.allMsgContext;
  }
  else {
    return chatStore.personalMsgContext.filter(x => {
      //两个条件
      //接收用户者id为对面id（我发给他）
      //或者，发送用户id为对面（他发给我）
      return (x.receiveId == currentSelectUser.value.userId && x.sendUserId == userStore.id) ||
        (x.sendUserId == currentSelectUser.value.userId && x.receiveId == userStore.id);
    });
  }
});


//当前聊天框显示的名称
const currentHeaderName = computed(() => {
  return currentSelectUser.value == null ? "官方学习交流群" : currentSelectUser.value.userName;
});
const currentUserItem = computed(() => {
  return userList.value.filter(x => x.userId != useUserStore().id)
});
var timer = null;

//初始化
onMounted(async () => {
  if (!isLogin.value) {
    ElMessage({
      message: '该功能，请登录后使用！即将自动跳转',
      type: 'warning',
    })
    timer = setTimeout(function () {
      onclickClose();
    }, 3000);


  }
  chatStore.setMsgList((await getChatAccountMessageList()).data);
  chatStore.setUserList((await getChatUserList()).data);
})
onUnmounted(() => {
  if (timer != null) {
    clearInterval(timer)
  }

})
/*-----方法-----*/
//当前选择的是否为全部
const selectIsAll = () => {
  return currentSelectUser.value == null;
};

//输入框的值被更改
const changeInputValue = (inputValue) => {
  currentInputValue.value = inputValue;
  let index = -1;
  let findKey = currentSelectUser.value?.userId
  if (selectIsAll()) {
    findKey = 'all'
  }
  index = inputListDataStore.value.findIndex(obj => obj.key == findKey);
  inputListDataStore.value[index].value = currentInputValue.value;
}
//绑定的input改变事件
const updateInputValue = (event) => {
  changeInputValue(event.target.value);
}
//获取输入框的值
const getCurrentInputValue = () => {

  if (selectIsAll()) {
    return inputListDataStore.value.filter(x => x.key == "all")[0].value;
  } else {
    //如果不存在初始存储值
    if (!inputListDataStore.value.some(x => x.key == currentSelectUser.value.userId)) {
      inputListDataStore.value.push({ key: currentSelectUser.value.userId, value: "" });
      return "";
    }
    return inputListDataStore.value.filter(x => x.key == currentSelectUser.value.userId)[0].value;
  }
};

//点击用户列表,
const onclickUserItem = (userInfo, isAllItem) => {
  if (isAllItem) {
    currentSelectUser.value = null;
  }
  else {
    currentSelectUser.value = userInfo;
  }
  //填充临时存储的输入框
  var value = getCurrentInputValue();
  //更新当前的输入框
  changeInputValue(value);
}

//点击发送按钮
const onclickSendMsg = () => {
  if (currentInputValue.value == "") {
    msgIsNullShow.value = true;
    setTimeout(() => {
      // 这里写上你想要3秒后执行的代码
      msgIsNullShow.value = false;
    }, 3000);
    return;
  }

  if (selectIsAll()) {
    onclickSendGroupMsg("all", currentInputValue.value);
  }
  else {
    onclickSendPersonalMsg(currentSelectUser.value.userId, currentInputValue.value);
  }
  changeInputValue("");
}

//点击发送个人消息
const onclickSendPersonalMsg = (receiveId, msg) => {
  //添加到本地存储
  chatStore.addMsg({
    messageType: "Personal",
    sendUserId: userStore.id,
    content: msg,
    receiveId: receiveId
  });
  sendPersonalMessage({ userId: receiveId, content: msg });
  //调用接口发送消息
}

const onclickClose = () => {
  router.push({ path: "/index" })
    .then(() => {
      // 重新刷新页面
      location.reload()
    })
}

//点击发送群组消息按钮
const onclickSendGroupMsg = (groupName, msg) => {
  //组还需区分是否给全部成员组
  if (selectIsAll) {
    //添加到本地存储,不需要，因为广播自己能够接收
    // chatStore.addMsg({
    //   messageType: "All",
    //   sendUserId: userStore.id,
    //   content: msg
    // });
    //调用接口发送消息
    sendGroupMessage({ content: msg });
  }
  else {
    alert("暂未实现");
  }
}


//获取当前最后一条信息
const getLastMessage = ((receiveId, isAll) => {
  if (isAll) {
    return chatStore.allMsgContext[chatStore.allMsgContext.length - 1]?.content;
  } else {
    const messageContext = chatStore.personalMsgContext.filter(x => {
      //两个条件
      //接收用户者id为对面id（我发给他）
      //或者，发送用户id为对面（他发给我）
      return (x.receiveId == receiveId && x.sendUserId == userStore.id) ||
        (x.sendUserId == receiveId && x.receiveId == userStore.id);
    });
    return messageContext[messageContext.length - 1]?.content;
  }

})
</script>

<template>
  <div style="position: absolute; top: 0;left: 0;">
    <p>当前版本：1.2.0</p>
    <p>tip:官方学习交流群每次发送消息消耗 1 钱钱</p>
    <p>tip:点击聊天窗口右上角“X”可退出</p>
    <p>tip:多人同时在聊天室时，左侧可显示其他成员</p>
  </div>
  <div class="body">

    <div class="left">
      <div class="icon">
        <img src="@/assets/chat_images/icon.jpg">
      </div>
      <ul class="top-icon">
        <li><img src="@/assets/chat_images/wechat.png" /></li>
        <li><img src="@/assets/chat_images/addressBook.png" /></li>
        <li><img src="@/assets/chat_images/collection.png" /></li>
        <li><img src="@/assets/chat_images/file.png" /></li>
        <li><img src="@/assets/chat_images/friend.png" /></li>
        <li><img src="@/assets/chat_images/line.png" /></li>
        <li><img src="@/assets/chat_images/look.png" /></li>
        <li><img src="@/assets/chat_images/sou.png" /></li>
      </ul>
      <ul class="bottom-icon">
        <li><img src="@/assets/chat_images/mini.png" /></li>
        <li><img src="@/assets/chat_images/phone.png" /></li>
        <li><img src="@/assets/chat_images/other.png" /></li>
      </ul>

    </div>

    <div class="middle">
      <div class="header">
        <div class="header-div">
          <div class="search">
            <img src="@/assets/chat_images/search.png" />
            <span>搜索</span>
          </div>
          <button type="button"> <img src="@/assets/chat_images/add.png" /></button>
        </div>
      </div>
      <div class="user-list">
        <div class="user-div" @click="onclickUserItem(null, true)"
          :class="{ 'select-user-item': currentSelectUser == null }">
          <div class="user-div-left">
            <img src="@/assets/chat_images/yilogo.png" />
            <div class="user-name-msg">
              <p class="font-name">官方学习交流群</p>
              <p class="font-msg">{{ getLastMessage(null, true) }}</p>
            </div>
          </div>
          <div class=" user-div-right">
            10:28
          </div>

        </div>


        <div v-for="(item, i) in currentUserItem" :key="i" @click="onclickUserItem(item, false)" class="user-div"
          :class="{ 'select-user-item': currentSelectUser?.userId == item.userId }">
          <div class="user-div-left">

            <img :src="getUrl(item.userIcon)"  />
            <div class="user-name-msg">
              <p class="font-name">{{ item.userName }}</p>
              <p class="font-msg">{{ getLastMessage(item.userId, false) }}</p>
            </div>
          </div>
          <div class=" user-div-right">
            10:28
          </div>
        </div>
      </div>
    </div>

    <div class="right">
      <div class="header">
        <div class="header-left">{{ currentHeaderName }}</div>
        <div class="header-right">
          <div>
            <ul>
              <li><img src="@/assets/chat_images/fixed.png" /></li>
              <li><img src="@/assets/chat_images/min.png" /></li>
              <li><img src="@/assets/chat_images/max.png" /></li>
              <li style="cursor: pointer;" @click="onclickClose"><img src="@/assets/chat_images/close.png" /></li>
            </ul>
          </div>
          <div class="more"><img src="@/assets/chat_images/other2.png" /></div>


        </div>

      </div>
      <div class="content">
        <div v-for="(item, i) in currentMsgContext" :key="i">
          <div class="content-myself content-common" v-if="item.sendUserId == userStore.id">
            <div class="content-myself-msg content-msg-common ">{{ item.content }}</div>
            <img :src="getUrl(item.sendUserInfo?.user.icon)" />
          </div>

          <div class="content-others content-common" v-else>

            <img :src="getUrl(item.sendUserInfo?.user.icon)" />
            <div>
    
              <p  v-if="selectIsAll()" class="content-others-username">{{item.sendUserInfo?.user.userName}}</p>
              <div class="content-others-msg content-msg-common " :class="{'content-others-msg-group':selectIsAll()}">
                {{ item.content }}
              </div>
            </div>
          </div>

        </div>

      </div>
      <div class="bottom">
        <div class="bottom-tool">

          <ul class="ul-left">
            <li><img src="@/assets/chat_images/emoji.png" /></li>
            <li><img src="@/assets/chat_images/sendFile.png" /></li>
            <li><img src="@/assets/chat_images/screenshot.png" /></li>
            <li><img src="@/assets/chat_images/chatHistory.png" /></li>
          </ul>

          <ul class="ul-right">
            <li><img src="@/assets/chat_images/landline.png" /></li>
            <li><img src="@/assets/chat_images/videoChat.png" /></li>
          </ul>

        </div>
        <!-- <div class="bottom-input" contenteditable="true" @input="updateInputValue"> -->
        <!-- <div class="bottom-input" contenteditable="true"  @input="updateInputValue">

        </div> -->
        <textarea class="bottom-input" v-model="currentInputValue" @input="updateInputValue"
          @keyup.enter="onclickSendMsg()">

</textarea>
        <div class="bottom-send">
          <div class="msg-null" v-show="msgIsNullShow">不能发送空白信息</div>
          <button @click="onclickSendMsg()">
            发送(S)
          </button>

        </div>
      </div>
    </div>
  </div>
</template>
<style scoped lang="scss">
.body {
  height: 790px;
  width: 1400px;
  display: flex;
  justify-content: center;
  box-shadow: 0px 0px 5px rgba(0, 0, 0, 0.2);
}

.select-user-item {
  background-color: #C8C8CA !important;
}

.left {
  background-color: #2a2a2a;
  width: 70px;
  padding: 46px 10px 0 10px;

  .icon {
    background-color: burlywood;
    height: 46px;
    width: 46px;

    img {
      height: 100%;
      width: 100%;
    }
  }
}

.middle {
  background-color: #dadbdc;
  width: 380px;

  .header {
    height: 75px;
    background: #f7f7f7;
    padding: 26px 0 26px 0;

    .header-div {
      background-color: #F7F7F7;
      height: 30px;
      width: 338px;
      margin: auto;
      display: flex;
      justify-content: space-between;

      .search {
        width: 300px;
        height: 100%;
        background-color: #E2E2E2;
        border-radius: 5px;
        padding: 5px;

        img {
          height: 16px;
          width: 16px;
        }

        span {
          margin-left: 10px;
          font-size: 14px;
          color: #818181;
          margin-bottom: 5px;
          vertical-align: top;
        }
      }

      button {
        margin-left: 10px;
        width: 30px;
        background-color: #E2E2E2;
        border-radius: 5px;
        padding: 5px 3px;

        img {
          height: 100%;
          width: 100%;
        }
      }
    }

  }

  .user-list::-webkit-scrollbar-thumb {
    background-color: #BEBCBA;
    /* 滚动条滑块颜色 */
  }

  .user-list::-webkit-scrollbar {
    width: 8px;
    /* 滚动条宽度 */
    height: 10px;
    /* 滚动条高度 */
  }

  .user-list {
    height: calc(100% - 75px);


    overflow-y: auto;

    /* 只启用垂直方向滚动条 */
    .user-div {
      display: flex;
      justify-content: space-between;
      height: 80px;
      width: 100%;
      background-color: #EAE8E7;
      padding: 16px;

      &-left {

        height: 100%;
        display: flex;

        .user-name-msg {
          display: flex;
          flex-direction: column;
          justify-content: space-between;
          padding: 0 10px;

          .font-name {
            font-size: 20px;
          }

          .font-msg {
            font-size: 15px;
            color: #999999;
          }
        }

        img {
          height: 100%;

        }
      }

      &-right {
        font-size: 15px;
        color: #999999;
      }
    }

    .user-div:hover {
      background-color: #D9D8D8;
    }
  }
}

.right {
  background-color: #f5f5f5;
  width: 950px;

  .header {
    height: 75px;
    background: #f7f7f7;
    border: 1px solid #e7e7e7;
    display: flex;
    justify-content: space-between;

    .header-left {
      padding: 25px;
      font-size: 25px;
      align-content: center;
    }

    .header-right {
      ul {
        display: flex;

        li {
          padding: 8px 12.5px 10px 12.5px;

          img {
            height: 15px;
            width: 15px;
          }
        }
      }

      .more {
        padding: 0px 12.5px;
        display: flex;
        justify-content: flex-end;

        img {
          height: 18px;
          width: 18px;
        }
      }
    }
  }

  .content {
    overflow-y: auto;
    /* 只启用垂直方向滚动条 */
    height: 555px;
    padding: 20px 40px;

  }

  .bottom {
    height: calc(100% - 630px);
    background: #f7f7f7;
    border-top: 1.5px solid #e7e7e7;
    padding: 15px 35px;

    &-tool {
      display: flex;
      justify-content: space-between;
      height: 22px;

      .ul-left {
        display: flex;

        li {
          width: 22px;
          height: 22px;
          margin-right: 20px;
        }

        img {
          width: 100%;
          height: 100%;
        }
      }

      .ul-right {
        display: flex;

        li {
          width: 22px;
          height: 22px;
          margin-right: 20px;
        }

        img {
          width: 100%;
          height: 100%;
        }
      }

    }

    &-input {
      font-family: "Microsoft YaHei", sans-serif;
      height: 70px;
      width: 100%;
      overflow-y: auto;
      padding: 10px 0;
      font-size: 18px;
      background: #F7F7F7;
      border: none;
      resize: none;
      outline: none;
    }

    &-send {
      display: flex;
      justify-content: flex-end;

      button {
        width: 126px;
        height: 40px;
        background-color: #E9E9E9;
        color: #06AE56;
        border-radius: 5px;
        font-size: 18px;
      }

      button:hover {
        background-color: #D2D2D2;

      }
    }
  }
}

.top-icon {
  margin-top: 32px;

  li {
    cursor: pointer;
    text-align: center;
    margin-bottom: 24px;

    img {
      height: 24px;
      width: 24px;

    }

  }
}

.bottom-icon {
  margin-top: 125px;

  li {
    cursor: pointer;
    text-align: center;
    margin-bottom: 24px;

    img {
      height: 24px;
      width: 24px;

    }

  }
}



.content-common {
  display: flex;
  margin-bottom: 18px;

  img {
    height: 45px;
    width: 45px;
  }
}

.content-msg-common {
  display: flex;
  align-content: center;
  flex-wrap: wrap;
  position: relative;

  margin: 0 15px;
  padding: 5px 15px;
  text-align: center;
  font-size: 18px;
  border-radius: 5px;
}


.content-myself {
  justify-content: flex-end;
}

.content-myself-msg:hover {

  background-color: #89D961;
}

.content-myself-msg {
  background-color: #95EC69;
}

.content-myself-msg:hover:after {
  border-left: 10px solid #89D961;
}


.content-others {
  justify-content: flex-start;

}
.content-others-username{
    margin-left: 15px;
    color: #B2B2B2;
    position: relative;
    top: -15px;
  }
.content-others-msg-group{
  position: relative;
    top: -10px;
}
.content-others-msg {
  background-color: #FFFFFF;
  padding: 10px 15px;
}

.content-others-msg:hover {
  background-color: #EBEBEB;
}

.content-others-msg:hover:after {
  border-right: 10px solid #EBEBEB;
}

.content-myself-msg:after {
  content: '';
  position: absolute;
  width: 0;
  height: 0;
  /* 箭头靠右边 */
  top: 13px;
  right: -10px;
  border-top: 10px solid transparent;
  border-bottom: 10px solid transparent;
  border-left: 10px solid #97EC6F;

}

.content-others-msg:after {
  /* 箭头靠左边 */
  content: '';
  position: absolute;
  width: 0;
  height: 0;
  top: 13px;
  left: -10px;
  border-top: 10px solid transparent;
  border-bottom: 10px solid transparent;
  border-right: 10px solid #FFFFFF;

}

.msg-null {
  width: 140px;
  height: 41px;
  background-color: #FFFFFF;
  position: relative;
  left: 132px;
  bottom: 60px;
  border-radius: 5px;
  // border: 2px solid #E5E5E5;
  display: flex;
  align-content: center;
  justify-content: center;
  flex-wrap: wrap;
  font-size: 14px;
}

.msg-null:after {
  /* 箭头靠下边 */
  content: "";
  position: absolute;
  width: 0;
  height: 0;
  top: 40px;
  left: 80px;
  border-top: 10px solid #FFFFFF;
  border-bottom: 10px solid transparent;
  border-right: 10px solid transparent;
  border-left: 10px solid transparent;

}
</style>