{% extends "../layout.html" %}

{% block title %}角色权限{% endblock %}

{% block content %}
<div id="roleApp">
  <!-- 搜索栏 -->
  <el-card shadow="never" class="mb-4">
    <el-form :inline="true" @submit.prevent="loadList()" class="flex items-center flex-wrap gap-2">
      <el-form-item label="关键字" class="!mb-0">
        <el-input v-model="keyword" placeholder="角色名称" clearable style="width:180px;" />
      </el-form-item>
      <el-form-item class="!mb-0">
        <el-button type="primary" @click="loadList()">搜索</el-button>
        <el-button @click="resetFilter">重置</el-button>
      </el-form-item>
    </el-form>
  </el-card>

  <!-- 角色列表 -->
  <el-card shadow="never">
    <template #header>
      <el-button type="primary" @click="showAddModal">+ 新增</el-button>
    </template>

    <el-table :data="tableData" v-loading="loading" stripe border>
      <el-table-column prop="name" label="角色名称">
        <template #default="{ row }">
          <span class="text-orange-500 font-medium">${ row.name }</span>
        </template>
      </el-table-column>
      <el-table-column prop="is_default" label="默认" width="80" align="center">
        <template #default="{ row }">
          <el-tag v-if="row.is_default" type="success" size="small">是</el-tag>
        </template>
      </el-table-column>
      <el-table-column prop="code" label="角色编码">
        <template #default="{ row }">${ row.code || '-' }</template>
      </el-table-column>
      <el-table-column prop="description" label="描述">
        <template #default="{ row }">${ row.description || '-' }</template>
      </el-table-column>
      <el-table-column label="操作" width="200" align="center">
        <template #default="{ row }">
          <el-button type="primary" link @click="openPermDrawer(row)">分配权限</el-button>
          <el-button v-if="!row.is_default" type="primary" link @click="editRole(row)">编辑</el-button>
          <el-button v-if="!row.is_default" type="danger" link @click="deleteRole(row)">删除</el-button>
        </template>
      </el-table-column>
    </el-table>

    <div class="flex justify-end mt-4">
      <el-pagination
        v-model:current-page="pagination.page"
        :page-size="pagination.pageSize"
        :total="pagination.total"
        layout="total, prev, pager, next"
        @current-change="loadList"
      />
    </div>
  </el-card>

  <!-- 新增/编辑弹窗 -->
  <el-dialog v-model="dialogVisible" :title="dialogTitle" width="500px" destroy-on-close>
    <el-form :model="form" label-width="80px">
      <el-form-item label="角色名称" required>
        <el-input v-model="form.name" placeholder="请输入角色名称" />
      </el-form-item>
      <el-form-item label="角色编码">
        <el-input v-model="form.code" placeholder="请输入角色编码（如 ADMIN）" />
      </el-form-item>
      <el-form-item label="描述">
        <el-input v-model="form.description" type="textarea" :rows="3" placeholder="请输入角色描述" />
      </el-form-item>
      <el-form-item label="排序">
        <el-input-number v-model="form.sort" :min="0" />
      </el-form-item>
      <el-form-item label="默认角色">
        <el-switch v-model="form.is_default" :active-value="1" :inactive-value="0" />
      </el-form-item>
    </el-form>
    <template #footer>
      <el-button @click="dialogVisible = false">取消</el-button>
      <el-button type="primary" @click="saveRole" :loading="saving">确定</el-button>
    </template>
  </el-dialog>

  <!-- 权限分配抽屉 -->
  <el-drawer v-model="permDrawerVisible" :title="permTitle" size="420px" destroy-on-close>
    <template #header>
      <span class="font-semibold">${ permTitle }</span>
    </template>
    <div class="mb-3">
      <el-checkbox v-model="expandAll" @change="handleExpandAll">全部展开</el-checkbox>
    </div>
    <el-tree
      ref="permTreeRef"
      :data="permissionTree"
      show-checkbox
      node-key="key"
      :default-expand-all="expandAll"
      :props="{ label: 'name', children: 'children' }"
    />
    <template #footer>
      <el-button @click="permDrawerVisible = false">取消</el-button>
      <el-button type="primary" @click="savePermissions" :loading="permSaving">确定</el-button>
    </template>
  </el-drawer>
</div>
{% endblock %}

{% block js %}
<script>
const permissionTreeData = {{ permissionTree | dump | safe }};

const { createApp, ref, reactive, onMounted, nextTick } = Vue;

const app = createApp({
  delimiters: ['${', '}'],
  setup() {
    const keyword = ref('');
    const loading = ref(false);
    const tableData = ref([]);
    const pagination = reactive({ page: 1, pageSize: 20, total: 0 });

    // 弹窗
    const dialogVisible = ref(false);
    const dialogTitle = ref('新增角色');
    const saving = ref(false);
    const form = reactive({ id: null, name: '', code: '', description: '', sort: 0, is_default: 0 });

    // 权限抽屉
    const permDrawerVisible = ref(false);
    const permTitle = ref('权限分配');
    const permTreeRef = ref(null);
    const expandAll = ref(false);
    const permSaving = ref(false);
    const currentPermRoleId = ref(null);
    const permissionTree = ref(permissionTreeData || []);

    // 加载列表
    async function loadList(page) {
      if (typeof page === 'number') pagination.page = page;
      loading.value = true;
      try {
        const params = new URLSearchParams({ page: pagination.page, pageSize: pagination.pageSize, keyword: keyword.value });
        const res = await fetch('/admin/system/role/list?' + params).then(r => r.json());
        if (res.code === 0) {
          tableData.value = res.data.data || [];
          pagination.total = res.data.count || 0;
        } else {
          ElementPlus.ElMessage.error(res.msg || '加载失败');
        }
      } finally {
        loading.value = false;
      }
    }

    // 重置筛选
    function resetFilter() {
      keyword.value = '';
      pagination.page = 1;
      loadList();
    }

    // 显示新增弹窗
    function showAddModal() {
      dialogTitle.value = '新增角色';
      Object.assign(form, { id: null, name: '', code: '', description: '', sort: 0, is_default: 0 });
      dialogVisible.value = true;
    }

    // 编辑角色
    function editRole(row) {
      dialogTitle.value = '编辑角色';
      Object.assign(form, { id: row.id, name: row.name, code: row.code || '', description: row.description || '', sort: row.sort || 0, is_default: row.is_default || 0 });
      dialogVisible.value = true;
    }

    // 保存角色
    async function saveRole() {
      if (!form.name.trim()) {
        ElementPlus.ElMessage.warning('角色名称不能为空');
        return;
      }
      saving.value = true;
      try {
        const url = form.id ? '/admin/system/role/edit' : '/admin/system/role/add';
        const body = { name: form.name, code: form.code, description: form.description, sort: form.sort, is_default: form.is_default };
        if (form.id) body.id = form.id;

        const res = await fetch(url, {
          method: 'POST',
          headers: { 'Content-Type': 'application/json' },
          body: JSON.stringify(body)
        }).then(r => r.json());

        if (res.code === 0) {
          ElementPlus.ElMessage.success('保存成功');
          dialogVisible.value = false;
          loadList();
        } else {
          ElementPlus.ElMessage.error(res.msg || '保存失败');
        }
      } finally {
        saving.value = false;
      }
    }

    // 删除角色
    async function deleteRole(row) {
      try {
        await ElementPlus.ElMessageBox.confirm('确定要删除该角色吗？', '提示', { type: 'warning' });
        const res = await fetch('/admin/system/role/delete', {
          method: 'POST',
          headers: { 'Content-Type': 'application/json' },
          body: JSON.stringify({ id: row.id })
        }).then(r => r.json());

        if (res.code === 0) {
          ElementPlus.ElMessage.success('删除成功');
          loadList();
        } else {
          ElementPlus.ElMessage.error(res.msg || '删除失败');
        }
      } catch {}
    }

    // 打开权限抽屉
    async function openPermDrawer(row) {
      currentPermRoleId.value = row.id;
      permTitle.value = `【${row.name}】权限分配`;
      permDrawerVisible.value = true;

      await nextTick();
      const res = await fetch('/admin/system/role/detail?id=' + row.id).then(r => r.json());
      const currentPerms = res.code === 0 ? (res.data.permissions || []) : [];
      if (permTreeRef.value) {
        permTreeRef.value.setCheckedKeys(currentPerms);
      }
    }

    // 全部展开/折叠
    function handleExpandAll(val) {
      if (permTreeRef.value) {
        const nodes = permTreeRef.value.store.nodesMap;
        for (const key in nodes) {
          nodes[key].expanded = val;
        }
      }
    }

    // 保存权限
    async function savePermissions() {
      permSaving.value = true;
      try {
        const permissions = permTreeRef.value ? permTreeRef.value.getCheckedKeys(true) : [];
        const res = await fetch('/admin/system/role/assignPermissions', {
          method: 'POST',
          headers: { 'Content-Type': 'application/json' },
          body: JSON.stringify({ id: currentPermRoleId.value, permissions })
        }).then(r => r.json());

        if (res.code === 0) {
          ElementPlus.ElMessage.success('权限保存成功');
          permDrawerVisible.value = false;
        } else {
          ElementPlus.ElMessage.error(res.msg || '保存失败');
        }
      } finally {
        permSaving.value = false;
      }
    }

    onMounted(() => loadList());

    return {
      keyword, loading, tableData, pagination,
      dialogVisible, dialogTitle, saving, form,
      permDrawerVisible, permTitle, permTreeRef, expandAll, permSaving, permissionTree,
      loadList, resetFilter, showAddModal, editRole, saveRole, deleteRole,
      openPermDrawer, handleExpandAll, savePermissions
    };
  }
});

app.use(ElementPlus, { locale: ElementPlusLocaleZhCn });
app.mount('#roleApp');
</script>
{% endblock %}