import { describe, it, expect, vi, beforeEach, afterEach } from "vitest";
import { mount, flushPromises, enableAutoUnmount, type VueWrapper } from "@vue/test-utils";
import ViewUIPlus from "view-ui-plus";
import { nextTick, reactive } from "vue";

const { flowApiMock } = vi.hoisted(() => ({
    flowApiMock: {
        adminTeacherTree: vi.fn(),
        deptMembers: vi.fn(),
        mapLookupUser: vi.fn(),
        applyPreview: vi.fn(),
    },
}));

vi.mock("@/api/module/flow", () => ({ flowApi: flowApiMock }));

import ApprovalDrawer from "@/views/flow/admin/def-editor/components/ApprovalDrawer.vue";
import AssigneePreviewModal from "@/views/flow/admin/def-editor/components/AssigneePreviewModal.vue";
import { EDITOR_CTX, createApproval, type ApprovalNode, type EditorItem } from "@/views/flow/admin/def-editor/model";

/**
 * 审批节点抽屉的组件测试：验收 P2-1 的两条硬指标——
 * ① 面板里有可发现的「预览候选人」入口，点开是真接口解析结果；
 * ② 核心/高级分层只挪展示，不改字段与数据语义。
 * 注：iView Drawer/Modal 内容 teleport 到 body，一律按真实 DOM 断言。
 */

enableAutoUnmount(afterEach);

function ok<T>(value: T) {
    return { send: async () => value };
}

function makeNode(over: Partial<ApprovalNode> = {}): ApprovalNode {
    return { ...createApproval("科室审核", { type: "DEPT_KEY", deptKey: "41" }), ...over } as ApprovalNode;
}

function baseCtx(over: Record<string, unknown> = {}) {
    const model = reactive({
        code: "c",
        name: "n",
        list: [] as EditorItem[],
        settings: { rejectPolicy: "END_REJECTED", urge: { enabled: true, intervalHours: 24, maxTimes: 3 } },
    });
    return {
        model,
        depts: [
            { deptKey: "41", deptName: "校长室", count: 2 },
            { deptKey: "42", deptName: "空科室", count: 0 },
        ],
        userNames: { 101: "陈星", 102: "刘文娟" },
        routers: [],
        availableVars: [],
        issueOf: () => [],
        openNode: () => undefined,
        removeNode: () => undefined,
        insertItem: () => undefined,
        addBranch: () => undefined,
        removeBranch: () => undefined,
        exitOutlets: () => undefined,
        flowGuid: "g-line-1",
        ...over,
    };
}

function mountDrawer(node: ApprovalNode, ctxOver: Record<string, unknown> = {}): VueWrapper {
    return mount(ApprovalDrawer, {
        props: { modelValue: true, node },
        global: {
            plugins: [ViewUIPlus],
            provide: { [EDITOR_CTX as unknown as symbol]: baseCtx(ctxOver) },
        },
        attachTo: document.body,
    });
}

const bodyText = () => document.body.textContent || "";
const q = (sel: string) => document.querySelector(sel) as HTMLElement | null;
const hiddenByStyle = (el: HTMLElement | null) => (el?.getAttribute("style") || "").includes("display: none");

async function clickEl(el: HTMLElement | null) {
    expect(el, "目标元素不存在").toBeTruthy();
    el!.click();
    await nextTick();
    await flushPromises();
}

function buttonNamed(text: string) {
    return (Array.from(document.querySelectorAll("button")) as HTMLButtonElement[])
        .find((b) => (b.textContent || "").includes(text)) || null;
}

beforeEach(() => {
    document.body.innerHTML = "";
    flowApiMock.adminTeacherTree.mockImplementation(() => ok([]));
    flowApiMock.deptMembers.mockImplementation((deptId: string) =>
        ok(deptId === "41"
            ? [
                { userId: 101, userName: "陈星", status: 0 },
                { userId: 102, userName: "刘文娟", status: 0 },
                { userId: 103, userName: "测试教师10", status: 1 },
            ]
            : []),
    );
    flowApiMock.mapLookupUser.mockImplementation((id: number) => ok({ id, name: `用户${id}`, status: 1 }));
    flowApiMock.applyPreview.mockImplementation(() => ok({ defVersion: 3, nodes: [] }));
});

afterEach(() => {
    vi.clearAllMocks();
});

describe("审批节点抽屉 · 核心/高级分层", () => {
    it("核心区直接可见：节点名称、审批人、预览入口；高级项默认收起", async () => {
        mountDrawer(makeNode());
        await flushPromises();
        const text = bodyText();
        expect(text).toContain("节点名称");
        expect(text).toContain("审批人类型");
        expect(text).toContain("科室映射");
        expect(text).toContain("预览候选人");
        expect(text).toContain("高级设置");
        // 收起只是隐藏，不删除能力
        expect(hiddenByStyle(q(".adv-body"))).toBe(true);
    });

    it("高级能力一个都没少：展开后会签/发起时指派/时限/多出口都在原位置", async () => {
        mountDrawer(makeNode());
        await flushPromises();
        await clickEl(q(".adv-head"));
        const adv = q(".adv-body");
        expect(hiddenByStyle(adv)).toBe(false);
        const text = adv?.textContent || "";
        expect(text).toContain("多人审批方式");
        expect(text).toContain("发起时指派");
        expect(text).toContain("办理时限（小时）");
        expect(text).toContain("出口路由");
    });

    it("已配置高级项的节点：打开抽屉自动展开，收起态也标出配了哪几项", async () => {
        mountDrawer(makeNode({ countersign: "ALL", deadlineHours: 24 }));
        await flushPromises();
        expect(hiddenByStyle(q(".adv-body"))).toBe(false);

        await clickEl(q(".adv-head"));
        expect(q(".adv-badge")?.textContent).toContain("会签");
        expect(q(".adv-badge")?.textContent).toContain("办理时限");
    });

    it("分层不改数据：折叠/展开来回，节点字段值不变", async () => {
        const node = makeNode({ countersign: "ALL", deadlineHours: 8, outlets: ["同意", "退回"] });
        const snapshot = JSON.stringify(node);
        mountDrawer(node);
        await flushPromises();
        await clickEl(q(".adv-head"));
        await clickEl(q(".adv-head"));
        expect(JSON.stringify(node)).toEqual(snapshot);
    });
});

describe("审批节点抽屉 · 预览候选人入口", () => {
    async function openPreview() {
        await clickEl(buttonNamed("预览候选人"));
    }

    it("点入口即按当前节点配置走真实接口（科室成员 + 发起预览），不是静态示例", async () => {
        mountDrawer(makeNode());
        await flushPromises();
        await openPreview();
        expect(flowApiMock.deptMembers).toHaveBeenCalledWith("41");
        expect(flowApiMock.applyPreview).toHaveBeenCalledWith("g-line-1");
        const text = bodyText();
        expect(text).toContain("校长室");
        expect(text).toContain("陈星");
        expect(text).toContain("刘文娟");
        expect(text).toContain("该成员已停用，不计入候选");
        expect(text).toContain("预览只读");
    });

    it("预览读的是抽屉里的未保存改动（换科室后立刻按新科室解析）", async () => {
        mountDrawer(makeNode({ assignee: { type: "DEPT_KEY", deptKey: "42" } }));
        await flushPromises();
        await openPreview();
        expect(flowApiMock.deptMembers).toHaveBeenCalledWith("42");
        const text = bodyText();
        expect(text).toContain("0 名启用办理人");
        expect(text).toContain("发布会被拦截");
    });

    it("指定用户节点按 UserBase 检索解析，非启用账号如实标注", async () => {
        flowApiMock.mapLookupUser.mockImplementation((id: number) =>
            ok(id === 101 ? { id: 101, name: "陈星", status: 1 } : { id, name: `用户${id}`, status: 0 }),
        );
        mountDrawer(makeNode({ assignee: { type: "USERS", userIds: [101, 102] } }));
        await flushPromises();
        await openPreview();
        expect(flowApiMock.mapLookupUser).toHaveBeenCalledWith(101);
        expect(flowApiMock.mapLookupUser).toHaveBeenCalledWith(102);
        const text = bodyText();
        expect(text).toContain("陈星");
        expect(text).toContain("非启用");
    });

    it("流程线尚未保存时说明没有可比对的已发布版本，不假装有一版", async () => {
        mountDrawer(makeNode(), { flowGuid: "" });
        await flushPromises();
        await openPreview();
        expect(flowApiMock.applyPreview).not.toHaveBeenCalled();
        expect(bodyText()).toContain("尚未保存");
    });

    it("预览只读：打开再关闭不写回节点、不产生任何接口写入", async () => {
        const node = makeNode();
        const before = JSON.stringify(node);
        const wrapper = mountDrawer(node);
        await flushPromises();
        await openPreview();
        await clickEl(buttonNamed("关闭"));
        expect(JSON.stringify(node)).toEqual(before);
        expect(wrapper.emitted("update:modelValue")).toBeUndefined();
        // 预览的数据源只有读接口：科室成员 / 用户检索 / 发起预览
        expect(flowApiMock.deptMembers).toHaveBeenCalled();
        expect(flowApiMock.applyPreview).toHaveBeenCalled();
    });

    it("预览弹窗组件确实挂在抽屉内（入口不是死链）", async () => {
        const wrapper = mountDrawer(makeNode());
        await flushPromises();
        expect(wrapper.findComponent(AssigneePreviewModal).exists()).toBe(true);
    });
});