<template>
	<!--  `branch-wrap--${nodeConfig.local_status}`-->
	<div class="branch-wrap" :class="[disabled ? 'branch-wrap--disabled' : '']">
		<div class="branch-box-wrap">
			<div class="branch-box">
				<el-button class="add-branch" type="success" plain round @click="addTerm"> 添加条件 </el-button>
				<div v-for="(item, index) in nodeConfig.conditionNodes" :key="index" class="col-box">
					<div class="condition-node">
						<div class="condition-node-box">
							<div :class="['auto-judge', `auto-judge--${item.local_status}`]" @click="show(index)">
								<!-- 不是第一个 也不是 最后一个-->
								<div v-if="index != 0 && index != nodeConfig.conditionNodes.length - 1" class="sort-left" @click.stop="arrTransfer(index, -1)">
									<el-icon><ArrowLeft /></el-icon>
								</div>
								<div class="title">
									<span class="node-title" :class="[index === nodeConfig.conditionNodes.length - 1 ? 'last-child-title' : '']">{{
										index === nodeConfig.conditionNodes.length - 1 ? '默认条件' : item.nodeName
									}}</span>
									<span class="priority-title">优先级{{ item.priorityLevel }}</span>
									<el-icon v-if="index != nodeConfig.conditionNodes.length - 1" class="close" @click.stop="delTerm(index)">
										<Close />
									</el-icon>
								</div>
								<div class="content" :class="[index === nodeConfig.conditionNodes.length - 1 ? 'last-child-title' : '']">
									<span v-if="toText(nodeConfig, index)">{{ toText(nodeConfig, index) }}</span>
									<span v-else class="placeholder"> 请设置条件 </span>
								</div>
								<!-- 最后一个没有，长度大于2倒数第二个没有 -->
								<div
									v-if="
										!(nodeConfig.conditionNodes.length == 2 && (index === nodeConfig.conditionNodes.length - 1 || index === 0)) &&
										!(
											(nodeConfig.conditionNodes.length > 2 && index === nodeConfig.conditionNodes.length - 1) ||
											index === nodeConfig.conditionNodes.length - 2
										)
									"
									class="sort-right"
									@click.stop="arrTransfer(index)"
								>
									<el-icon><ArrowRight /></el-icon>
								</div>
							</div>
							<add-node v-model="item.childNode" :disabled="disabled"></add-node>
						</div>
					</div>
					<slot v-if="item.childNode" :node="item"></slot>
					<div v-if="index == 0" class="top-left-cover-line"></div>
					<div v-if="index == 0" class="bottom-left-cover-line"></div>
					<div v-if="index == nodeConfig.conditionNodes.length - 1" class="top-right-cover-line"></div>
					<div v-if="index == nodeConfig.conditionNodes.length - 1" class="bottom-right-cover-line"></div>
				</div>
			</div>
			<add-node v-model="nodeConfig.childNode" :disabled="disabled"></add-node>
		</div>
		<el-drawer v-model="drawer" title="条件设置" destroy-on-close append-to-body :size="600">
			<template #header>
				<div class="node-wrap-drawer__title">
					<label v-if="!isEditTitle" @click="editTitle">
						{{ form.nodeName }}<el-icon class="node-wrap-drawer__title-edit"><Edit /></el-icon>
						<!--						<div @click="rmConditionGroup(conditionGroup)">-->
						<!--							-->
						<!--						</div>-->
					</label>
					<el-input v-if="isEditTitle" ref="nodeTitle" v-model="form.nodeName" clearable @blur="saveTitle" @keyup.enter="saveTitle"></el-input>
				</div>
			</template>
			<el-container>
				<el-main style="padding: 0 0 20px 0">
					<div class="top-tips">满足以下条件时进入当前分支</div>
					<template v-for="(conditionGroup, conditionGroupIdx) in form.conditionList" :key="conditionGroupIdx">
						<div v-if="conditionGroupIdx != 0" class="or-branch-link-tip">或满足</div>
						<div class="condition-group-editor">
							<div class="header">
								<span>条件组 {{ conditionGroupIdx + 1 }}</span>
								<div @click="deleteConditionGroup(conditionGroupIdx)">
									<el-icon class="branch-delete-icon"><Delete /></el-icon>
								</div>
							</div>

							<div class="main-content">
								<!-- 单个条件 -->
								<div class="condition-content-box cell-box">
									<div v-if="false">描述</div>
									<div>条件字段</div>
									<div>运算符</div>
									<div>值</div>
								</div>
								<div v-for="(condition, idx) in conditionGroup" :key="idx" class="condition-content">
									<div class="condition-relation">
										<span>{{ idx == 0 ? '当' : '且' }}</span>
										<div v-if="conditionGroup.length > 1" @click="deleteConditionList(conditionGroup, idx)">
											<el-icon class="branch-delete-icon"><Delete /></el-icon>
										</div>
									</div>
									<div class="condition-content">
										<div class="condition-content-box">
											<el-input
												v-if="condition.type === 'custom'"
												v-model="condition.label"
												placeholder="自定义条件字段"
												@input="getCurrentItemField(conditionGroupIdx, idx)"
											/>
											<el-select
												v-if="condition.type === 'form'"
												v-model="condition.field"
												filterable
												placeholder="表单条件字段"
												@change="getCurrentItemLabel(conditionGroupIdx, idx)"
											>
												<el-option v-for="{ id, label, key } in expressionFormList" :key="id" :label="label" :value="key" />
											</el-select>
											<el-select v-model="condition.operator" placeholder="请选择表达式">
												<el-option label="等于" value="=="></el-option>
												<el-option label="不等于" value="!="></el-option>
												<el-option label="大于" value=">"></el-option>
												<el-option label="大于等于" value=">="></el-option>
												<el-option label="小于" value="<"></el-option>
												<el-option label="小于等于" value="<="></el-option>
												<el-option label="包含" value="include"></el-option>
												<el-option label="不包含" value="notinclude"></el-option>
											</el-select>
											<el-input v-model="condition.value" placeholder="值" />
										</div>
									</div>
								</div>
							</div>
							<div class="sub-content">
								<el-button link type="primary" :icon="Plus" @click="addConditionList(conditionGroup, 'custom')"> 添加自定义条件 </el-button>
								<el-button
									v-if="expressionFormList.length"
									link
									type="primary"
									:icon="Plus"
									style="margin-left: 8px"
									@click="addConditionList(conditionGroup, 'form')"
								>
									添加表单条件
								</el-button>
							</div>
						</div>
					</template>
					<el-button style="width: 100%" type="info" :icon="Plus" text bg @click="addConditionGroup"> 添加条件组 </el-button>
				</el-main>
				<el-footer>
					<el-button type="primary" @click="save"> 保存 </el-button>
					<el-button @click="drawer = false">取消</el-button>
				</el-footer>
			</el-container>
		</el-drawer>
	</div>
</template>

<script>
import addNode from './addNode.vue'
import useFlowStore from '@/store/modules/flow'
import { Delete, Plus, ArrowLeft, Close, ArrowRight, Edit } from '@element-plus/icons-vue'
import { mapState } from 'pinia'

export default {
	components: {
		addNode
	},
	props: {
		modelValue: { type: Object, default: () => {} },
		disabled: {
			type: Boolean,
			default: false
		}
	},
	data() {
		return {
			nodeConfig: {},
			drawer: false,
			isEditTitle: false,
			index: 0,
			form: {},
			expressionFormList: []
		}
	},
	computed: {
		Plus() {
			return Plus
		},
		...mapState(useFlowStore, ['processForm']) //映射函数，取出processForm
	},
	watch: {
		modelValue() {
			this.nodeConfig = this.modelValue
		}
	},
	mounted() {
		this.nodeConfig = this.modelValue
	},
	methods: {
		show(index) {
			if (this.disabled) return
			if (index === this.nodeConfig.conditionNodes.length - 1) {
				// 最后一个节点不能编辑
				return
			}
			this.index = index
			this.form = {}
			this.form = JSON.parse(JSON.stringify(this.nodeConfig.conditionNodes[index]))
			const { formStructure } = JSON.parse(this.processForm) // 表单设计字段
			// 使用 filter 方法找到 required 属性为 true 的对象
			const requiredList = (formStructure?.fields || []).filter(item => item.options && item.options.required === true)
			console.log(`%c 这里打印出符合条件的表单对象-=== ${JSON.stringify(requiredList)}`, 'background: orange; color: #fff')
			this.expressionFormList = requiredList || []
			this.drawer = true
		},
		editTitle() {
			this.isEditTitle = true
			this.$nextTick(() => {
				this.$refs.nodeTitle.focus()
			})
		},
		saveTitle() {
			this.isEditTitle = false
		},
		save() {
			this.nodeConfig.conditionNodes[this.index] = this.form
			this.$emit('update:modelValue', this.nodeConfig)
			this.drawer = false
		},
		addTerm() {
			let len = this.nodeConfig.conditionNodes.length + 1
			this.nodeConfig.conditionNodes.push({
				nodeName: '条件' + len,
				type: 3,
				priorityLevel: len,
				conditionMode: 1,
				conditionList: []
			})
		},
		delTerm(index) {
			this.nodeConfig.conditionNodes.splice(index, 1)
			if (this.nodeConfig.conditionNodes.length == 1) {
				if (this.nodeConfig.childNode) {
					if (this.nodeConfig.conditionNodes[0].childNode) {
						this.reData(this.nodeConfig.conditionNodes[0].childNode, this.nodeConfig.childNode)
					} else {
						this.nodeConfig.conditionNodes[0].childNode = this.nodeConfig.childNode
					}
				}
				this.$emit('update:modelValue', this.nodeConfig.conditionNodes[0].childNode)
			}
		},
		reData(data, addData) {
			if (!data.childNode) {
				data.childNode = addData
			} else {
				this.reData(data.childNode, addData)
			}
		},
		arrTransfer(index, type = 1) {
			this.nodeConfig.conditionNodes[index] = this.nodeConfig.conditionNodes.splice(index + type, 1, this.nodeConfig.conditionNodes[index])[0]
			this.nodeConfig.conditionNodes.map((item, index) => {
				item.priorityLevel = index + 1
			})
			this.$emit('update:modelValue', this.nodeConfig)
		},
		addConditionList(conditionList, type) {
			conditionList.push({
				label: '',
				field: '',
				operator: '==',
				value: '',
				type
			})
		},
		deleteConditionList(conditionList, index) {
			conditionList.splice(index, 1)
		},
		addConditionGroup() {
			this.addConditionList(this.form.conditionList[this.form.conditionList.push([]) - 1], 'custom')
		},
		deleteConditionGroup(index) {
			this.form.conditionList.splice(index, 1)
		},
		toText(nodeConfig, index) {
			var { conditionList } = nodeConfig.conditionNodes[index]
			if (conditionList && conditionList.length == 1) {
				const text = conditionList.map(conditionGroup => conditionGroup.map(item => `${item.label}${item.operator}${item.value}`)).join(' 和 ')
				return text
			} else if (conditionList && conditionList.length > 1) {
				return conditionList.length + '个条件，或满足'
			} else {
				if (index == nodeConfig.conditionNodes.length - 1) {
					return '未满足时其他条件时，将进入默认流程'
				} else {
					return false
				}
			}
		},
		getCurrentItemLabel(conditionIdx, idx) {
			const currentCondition = this.form.conditionList[conditionIdx]
			const field = currentCondition[idx].field
			// const labelObj = this.expressionFormList.find(i => i.key === field)
			// currentCondition[idx].label = labelObj.label
			currentCondition[idx].label = field
		},
		getCurrentItemField(conditionIdx, idx) {
			const currentCondition = this.form.conditionList[conditionIdx]
			currentCondition[idx].field = currentCondition[idx].label
		}
	}
}
</script>

<style scoped lang="scss">
.top-tips {
	display: flex;
	justify-content: space-between;
	align-items: center;
	margin-bottom: 12px;
	color: #646a73;
}

.or-branch-link-tip {
	margin: 10px 0;
	color: #646a73;
}

.condition-group-editor {
	user-select: none;
	border-radius: 4px;
	border: 1px solid #e4e5e7;
	position: relative;
	margin-bottom: 16px;

	.branch-delete-icon {
		font-size: 18px;
	}

	.header {
		background-color: #f4f6f8;
		padding: 0 12px;
		font-size: 14px;
		color: #171e31;
		height: 36px;
		display: flex;
		align-items: center;

		span {
			flex: 1;
		}
	}

	.main-content {
		padding: 0 12px;

		.condition-relation {
			color: #9ca2a9;
			display: flex;
			align-items: center;
			height: 36px;
			display: flex;
			justify-content: space-between;
			padding: 0 2px;
		}

		.condition-content-box {
			display: flex;
			justify-content: space-between;
			align-items: center;

			div {
				width: 100%;
				min-width: 120px;
			}

			div:not(:first-child) {
				margin-left: 16px;
			}
		}

		.cell-box {
			div {
				padding: 16px 0;
				width: 100%;
				min-width: 120px;
				color: #909399;
				font-size: 14px;
				font-weight: 600;
				text-align: center;
			}
		}

		.condition-content {
			display: flex;
			flex-direction: column;

			:deep(.el-input__wrapper) {
				border-top-left-radius: 0;
				border-bottom-left-radius: 0;
			}

			.content {
				flex: 1;
				padding: 0 0 4px 0;
				display: flex;
				align-items: center;
				min-height: 31.6px;
				flex-wrap: wrap;
			}
		}
	}

	.sub-content {
		padding: 12px;
	}
}
</style>
