<template>
  <el-row :gutter="20">
    <el-col :span="3"><div class="grid-content ep-bg-purple" /></el-col>
    <el-col :span="12">
      <el-card style="width: 100%">
        <template #header>
          <div class="card-header">
            <span>Your Offer Information</span>
          </div>
        </template>
        <el-form
          ref="ruleFormRef"
          :model="ruleForm"
          :rules="rules"
          label-width="180px"
          :label-position="'right'"
          class="demo-ruleForm"
          :size="formSize"
          status-icon
        >
          <el-form-item label="Located City" prop="spaceLocateCity">
            <el-col :span="15">
              <el-input v-model="ruleForm.spaceLocateCity" :readonly="buttonState === 'edit'"/>
            </el-col>
          </el-form-item>
          <el-form-item label="State" prop="state">
            <el-col :span="8">
              <el-select
                  v-model="ruleForm.state"
                  placeholder="Select state"
                  :disabled="buttonState === 'edit'"
              >
                <el-option v-for="(state_item, index) in USA_STATE_INITAL_LIST"
                           :label="state_item" :value="state_item" />
              </el-select>
            </el-col>
          </el-form-item>
          <el-form-item label="Zip Code" prop="zipCode">
            <el-col :span="7">
              <el-input v-model="ruleForm.zipCode" placeholder="24061" :readonly="buttonState === 'edit'"/>
            </el-col>
          </el-form-item>
          <el-col :span="24">
            <el-form-item label="Space Type" prop="spaceType">
              <el-select
                v-model="ruleForm.spaceType"
                placeholder="Please select your Space Type"
                :disabled="buttonState === 'edit'"
              >
                <el-option
                  label="Apartment (No Roommates)"
                  value="apt-single"
                />
                <el-option
                  label="Apartment (Shared with Roommates)"
                  value="apt-share"
                />
                <el-option label="Townhouse (No Roommates)" value="th-single" />
                <el-option
                  label="Townhouse (Shared with Roommates)"
                  value="th-share"
                />
                <el-option
                  label="Single Family House (No Roommates)"
                  value="sfh-single"
                />
                <el-option
                  label="Single Family House (Shared with Roommates)"
                  value="sfh-share"
                />
                <el-option label="Other" value="other" />
              </el-select>
            </el-form-item>
          </el-col>
          <el-form-item
            label="Other Type"
            v-if="ruleForm.spaceType === 'other'"
            :required="ruleForm.spaceType === 'other'"
          >
            <el-col :span="8">
              <el-input v-model="ruleForm.otherSpaceType" :readonly="buttonState === 'edit'"/>
            </el-col>
          </el-form-item>
          <el-form-item label="Space Available for Offering?">
            <el-col :span="2">
              <el-form-item prop="offering">
                <el-switch v-model="ruleForm.offering" :disabled="buttonState === 'edit'"/>
              </el-form-item>
            </el-col>
          </el-form-item>
          <el-form-item></el-form-item>
          <el-form-item
            label="Time Window"
            v-if="ruleForm.offering"
            :required="ruleForm.offering"
          >
            <el-col :span="7">
              <el-form-item prop="availableTimeStart">
                <el-date-picker
                  v-model="ruleForm.availableTimeStart"
                  type="date"
                  label="Pick a date"
                  placeholder="Pick a date"
                  style="width: 100%"
                  :readonly="buttonState === 'edit'"
                />
              </el-form-item>
            </el-col>
            <el-col class="text-center" :span="2">
              <span class="text-gray-500"> To </span>
            </el-col>
            <el-col :span="7">
              <el-form-item prop="availableTimeEnd">
                <el-date-picker
                  v-model="ruleForm.availableTimeEnd"
                  label="Pick a time"
                  placeholder="Pick a time"
                  style="width: 100%"
                  :readonly="buttonState === 'edit'"
                />
              </el-form-item>
            </el-col>
          </el-form-item>
          <el-form-item
            label="Max Number of People"
            :required="ruleForm.offering"
            v-if="ruleForm.offering"
            prop="maxNumberOfPeople"
          >
            <el-col :span="4">
              <el-input v-model="ruleForm.maxNumberOfPeople" :readonly="buttonState === 'edit'"/>
            </el-col>
          </el-form-item>
          <el-form-item></el-form-item>

          <el-form-item label="Space Details:" prop="spaceDetails">
            <el-col :span="16"
              ><el-input v-model="ruleForm.spaceDetails" type="textarea" :readonly="buttonState === 'edit'"
            /></el-col>
          </el-form-item>
          <el-form-item v-if="buttonState === 'create'">
            <el-button type="primary" @click="submitForm(ruleFormRef)"
              >Create</el-button>
            <el-button @click="resetForm(ruleFormRef)">Reset</el-button>
          </el-form-item>
          <el-form-item v-if="buttonState === 'edit'">
            <el-button type="primary" @click="editForm()"
            >Edit</el-button>
          </el-form-item>
          <el-form-item v-if="buttonState === 'update'">
            <el-button type="success" @click="updateForm(ruleFormRef)"
            >Save</el-button>
            <el-button type="danger" @click="deleteForm(ruleFormRef)">Delete</el-button>
          </el-form-item>

        </el-form>
      </el-card>
    </el-col>
    <el-col :span="6">
      <el-card style="width: 100%">
        <template #header>
          <div class="card-header">
            <span>Match Request</span>
          </div>
        </template>
<!--  TODO     -->
        <el-card
            v-for="(item, index) in matchRequestList.value"
            shadow="hover"
            :fill="true"
            @click="selectMatchRequestItem(index)"
        >
          <time > {{formatDate(item.startTime)}} - {{formatDate(item.endTime)}}</time>
          <div class="w-bottom">
            <span class="w-owner"> Wishlist Owner Name: {{item.wishListOwnerName}}</span>
            <br>
            <span class="w-zipCode" v-if="!item.hasOffer"> No Available Offer </span>
            <span class="w-zipCode">Zip Code: {{item.zipCode}}</span>
          </div>
        </el-card>

      </el-card>
    </el-col>
    <el-col :span="2"></el-col>
  </el-row>
</template>

<script lang="ts" setup>
import { reactive, ref, onMounted } from "vue";
import type { FormInstance, FormRules } from "element-plus";
import { OfferFormModel } from "@/models/OfferFormModel";
import * as OfferPageService from "@/services/OfferPageService";
import { USA_STATE_INITAL_LIST } from "@/services/Constans";

// Form verification relate field
const formSize = ref("default");
const ruleFormRef = ref<FormInstance>();
const rules = reactive<FormRules>({
  spaceLocateCity: [
    {
      required: true,
      message: "Please give your space location",
      trigger: "blur",
    },
    { min: 0, max: 20, message: "Length should be 0 to 20", trigger: "blur" },
  ],
  state: [
    {
      required: true,
      message: "Please give your space located state",
      trigger: "blur",
    },
    { min: 0, max: 20, message: "Length should be 0 to 20", trigger: "blur" },
  ],
  zipCode: [
    {
      required: true,
      message: "Please give your zip code of your space",
      trigger: "blur",
    },
  ],
  spaceType: [
    {
      required: true,
      message: "Please select your space type",
      trigger: "blur",
    },
  ],
});
// TODO: uncomment it when API connection ready
let ruleForm = ref(new OfferFormModel());
let buttonState = ref("create");
let matchRequestList = reactive({value:[]});

onMounted(() => {
  loadInitOfferInfoPage();
  loadOfferPageMatchRequest();
})

const loadInitOfferInfoPage = async () =>{
  await OfferPageService.getUserOfferInfoFromServer().then( (data) => {
    console.log("Receive user offer data: ", data);
    if(data["data"] === null){
      // TODO: Handle fetch error
    }else{
      ruleForm.value = data["data"];
      if(ruleForm.value.spaceLocateCity == null || ruleForm.value.spaceLocateCity == ""){
        buttonState.value = "create";
      }else{
        buttonState.value = "edit";
      }
    }
  });
}

const loadOfferPageMatchRequest = async() =>{
  await OfferPageService.getWishlistMatchRequestInfoList().then( (data) =>{
    console.log("Fetching Offer Page Match Request Info: ", data);
    matchRequestList.value = data["data"];
  })
}


const submitForm = async (formEl: FormInstance | undefined) => {
  if (!formEl) return;
  await formEl.validate((valid, fields) => {
    if (valid) {
      // TODO: Check the return result
      console.log("Form Data before save in DB: ", ruleForm.value);
      OfferPageService.createNewUserOffer(ruleForm.value).then((data) => {
        console.log("Save user offer data: ", data);
        ruleForm.value = data["data"];
        buttonState.value = "edit";
      })
      console.log("submit!");
    } else {
      console.log("error submit!", fields);
    }
  });
};

const editForm = () => {
  buttonState.value = "update";
}

const updateForm = async (formEl: FormInstance | undefined) => {
  if (!formEl) return;
  await formEl.validate((valid, fields) => {
    if (valid) {
      // TODO: Check the return result
      OfferPageService.updateOffer(ruleForm.value).then((data) =>{
        console.log("Update user offer data: ", data);
        ruleForm.value = data["data"];
        buttonState.value = "edit";
      })
    } else {
      console.log("error submit!", fields);
    }
  });
};

const deleteForm = async(formEl: FormInstance | undefined) => {
  // TODO: Check the return result
  await OfferPageService.deleteOffer(ruleForm.value.userId).then((data) =>{
    console.log("Deleting Offer Record");
    console.log("Message: " + data["message"]);
    resetForm();
    buttonState.value = "create";
  });
};

const resetForm = () => {
  let userId = ruleForm.value.userId;
  ruleForm.value = new OfferFormModel();
  ruleForm.value.userId = userId;
};

const options = Array.from({ length: 10000 }).map((_, idx) => ({
  value: `${idx + 1}`,
  label: `${idx + 1}`,
}));

const formatDate = (dateString) => {
  const date = new Date(dateString);
  return new Intl.DateTimeFormat('en-US').format(date);
}
</script>

<style scoped>
.time {
  font-size: 12px;
}
.w-zipCode {
  font-size: 12px;
}
.w-owner {
  font-size: 12px;
}
</style>