<template>
    <div class="module">
        <div @click="clickItem()" class="netlist-treeview-item">
            <span class="module-tag-status" @click.stop="expandManage.click">
                <div :class="expandManage.expandTagClass"></div>
            </span>
            <span :class="`iconfont ${makeIconClass(module)}`"></span>
            &ensp;{{ module.name }}
        </div>

        <!-- 渲染这个 module scope 有的组件 -->
        <div
            v-if="ports.length > 0 || cells.length > 0"
            v-show="expandManage.expanded"
            class="netlist-subtree-wrapper"
        >
            <div style="width: 20px;"></div>
            <div style="width: 100%;">
                <!-- ports -->
                <div v-for="port in ports" :key="port.name" class="netlist-treeview-item">
                    <span class="module-tag-status">
                    </span>
                    <span class="iconfont icon-wave-square"></span>
                    &ensp;{{ port.name }}
                </div>

                <!-- 例化模块 -->
                <modules
                    v-for="(cell, index) in cells" 
                    :module="cell.view" 
                    :key="index"
                ></modules>
            </div>
        </div>
    </div>
</template>

<script setup>
/* eslint-disable */
import { globalLookup } from '@/hook/global';
import { ModuleView } from '@/hook/render/yosys';
import { defineComponent, reactive } from 'vue';

defineComponent({ name: 'modules' });

const props = defineProps({
    module: {
        type: ModuleView,
        required: true
    } 
});

const module = props.module;

// 当前 scope 的例化模块下的
const ports = [];
const cells = [];

// 初始化渲染的子视图 ports & modules
for (const portName of module.nameToPort.keys()) {
    ports.push({
        name: portName
    });
}

for (const cellName of module.nameToCell.keys()) {
    const cell = module.nameToCell.get(cellName);
    if (cell.view === module) {
        // 防止递归
        continue;
    }
    if (cell.isInstantiation) {
        cells.push({
            name: cellName,
            view: cell.belongModuleView
        });
    }
}

function clickItem() {

}

function getExpandStatus() {
    return module.name === globalLookup.topModuleName;
}

const expandManage = reactive({
    expanded: getExpandStatus(),
    expandTagClass: getExpandStatus() ? 'expand-tag' : 'collapse-tag',
    click() {                
        this.expanded = !this.expanded;
        if (this.expandTagClass) {
            this.expandTagClass = this.expanded ? 'expand-tag' : 'collapse-tag';
        }
    }
});

function makeIconClass() {
    return 'icon-memory-chip';
}

</script>

<style>
.icon-memory-chip {
    color: #FF7043;
}

.module {
    text-align: left;
}

.netlist-subtree-wrapper {
    display: flex;
    width: 100%;
}

.netlist-treeview-item {
    color: var(--vscode-foreground);
    cursor: pointer;
    display: flex;
    align-items: center;
    white-space: nowrap;
    text-overflow: ellipsis;
    font-size: 0.75rem;
}

.netlist-treeview-item::selection {
    background: none;
}

.netlist-treeview-item:hover {
    background-color: var(--sidebar-item-selected);
    border-radius: .3em;
}

.netlist-treeview-selected {
    color: #ddd;
    background-color: var(--button-active) !important;
    border-radius: .3em;
}

.module-tag-status {
    width: 23px;
    height: 23px;
    align-items: center;
    justify-content: space-around;
    display: flex;
    transition: var(--animation-3s);
}

.expand-tag {
    height: 5px;
    width: 5px;
    border-top: solid 1.7px var(--vscode-foreground);
    border-left: solid 1.7px var(--vscode-foreground);
    transform: rotate(225deg);
}

.collapse-tag {
    height: 5px;
    width: 5px;
    border-top: solid 1.7px var(--vscode-foreground);
    border-left: solid 1.7px var(--vscode-foreground);
    transform: rotate(135deg);
}
</style>