import { afterEach, describe, expect, it } from "vitest";
import {
  addMockInvoiceComment,
  areMocksEnabled,
  getMockApprovalPolicies,
  getMockApprovals,
  getMockDepartments,
  getMockGlAccounts,
  getMockInvoice,
  getMockInvoices,
  getMockPendingApprovals,
  getMockSessionUser,
  getMockUsers,
  getMockVendors,
  resetMockApprovalPolicies,
  resetMockApprovals,
  resetMockDepartments,
  resetMockGlAccounts,
  resetMockInvoices,
  resetMockSession,
  resetMockUsers,
  resetMockVendors,
  setMockSessionUserId,
  transitionMockInvoiceStatus,
  updateMockApprovalStatus,
  updateMockInvoiceHeader,
  updateMockInvoiceLines,
  updateMockInvoicePayDate,
  upsertMockDepartment,
  upsertMockGlAccount,
  upsertMockVendor,
  upsertMockUser,
  upsertMockApprovalPolicy,
} from "@/mocks";

describe("mocks module", () => {
  afterEach(() => {
    resetMockInvoices();
    resetMockVendors();
    resetMockGlAccounts();
    resetMockDepartments();
    resetMockUsers();
    resetMockApprovalPolicies();
    resetMockApprovals();
    resetMockSession();
  });

  it("defaults to mocks enabled", () => {
    expect(areMocksEnabled()).toBe(true);
  });

  it("exposes sample invoices and vendors", () => {
    expect(getMockVendors().length).toBeGreaterThan(0);
    expect(getMockInvoices().length).toBeGreaterThanOrEqual(6);
  });

  it("seeds Stampli catalog fields on every invoice (AP-47)", () => {
    const invoices = getMockInvoices();
    expect(invoices.length).toBeGreaterThan(0);
    for (const invoice of invoices) {
      expect(typeof invoice.hasBolt).toBe("boolean");
      expect(typeof invoice.hasBell).toBe("boolean");
      expect(typeof invoice.hasEye).toBe("boolean");
      expect(invoice.actionLabel.length).toBeGreaterThan(0);
      expect(invoice.lastUpdate).toMatch(/^\d{4}-\d{2}-\d{2}$/);
      expect(invoice.invoiceDate).toMatch(/^\d{4}-\d{2}-\d{2}$/);
      expect(invoice.processingBegan).toMatch(/^\d{4}-\d{2}-\d{2}$/);
      expect(typeof invoice.tagging).toBe("string");
      expect(typeof invoice.fs).toBe("string");
      expect(typeof invoice.description).toBe("string");
      expect(typeof invoice.invoiceType).toBe("string");
      expect(typeof invoice.location).toBe("string");
      expect(typeof invoice.paymentAccount).toBe("string");
      expect(invoice.relatedInvoice === null || typeof invoice.relatedInvoice === "string").toBe(
        true,
      );
      expect(invoice.rowCount).toBe(invoice.lines.length);
    }
    const pending = invoices.filter((invoice) => invoice.status === "pending_approval");
    expect(pending.every((invoice) => invoice.actionLabel === "Approve invoice")).toBe(true);
  });

  it("seeds at least two invoices per dashboard tab", () => {
    const invoices = getMockInvoices();
    const pending = invoices.filter((invoice) => invoice.status === "pending_approval");
    const ready = invoices.filter((invoice) => invoice.status === "approved");

    expect(pending.length).toBeGreaterThanOrEqual(2);
    expect(ready.length).toBeGreaterThanOrEqual(2);
    expect(invoices.every((invoice) => invoice.invoiceNumbers && invoice.amount >= 0)).toBe(true);
  });

  it("updates pay date in the mutable mock store", () => {
    const before = getMockInvoices().find((invoice) => invoice.id === "inv-1");
    expect(before).toBeDefined();

    const updated = updateMockInvoicePayDate("inv-1", "2026-08-18");
    expect(updated.payDate).toBe("2026-08-18");

    const after = getMockInvoices().find((invoice) => invoice.id === "inv-1");
    expect(after?.payDate).toBe("2026-08-18");
  });

  it("throws when updating an unknown invoice", () => {
    expect(() => updateMockInvoicePayDate("missing", "2026-08-18")).toThrow(
      /Mock invoice not found/,
    );
  });

  it("returns invoice detail with lines, comments, and activity", () => {
    const invoice = getMockInvoice("inv-2");
    expect(invoice).toBeDefined();
    expect(invoice?.documentUrl).toBe("/fixtures/sample-invoice.pdf");
    expect(invoice?.lines.length).toBeGreaterThan(0);
    expect(invoice?.comments.length).toBeGreaterThan(0);
    expect(invoice?.activity.length).toBeGreaterThan(0);
  });

  it("updates header and lines coding against mocks", () => {
    const updated = updateMockInvoiceHeader("inv-2", { memo: "Updated memo", amountDue: 4700 });
    expect(updated.memo).toBe("Updated memo");
    expect(updated.amountDue).toBe(4700);

    const withLines = updateMockInvoiceLines("inv-2", [
      {
        id: "inv-2-line-1",
        description: "Updated line",
        amount: 4700,
        glAccountId: "gl-2",
        departmentId: "dept-1",
      },
    ]);
    expect(withLines.lines).toHaveLength(1);
    expect(withLines.lines[0].description).toBe("Updated line");
    expect(getMockInvoice("inv-2")?.lines[0].description).toBe("Updated line");
  });

  it("adds comments and transitions status with activity", () => {
    const withComment = addMockInvoiceComment("inv-2", {
      authorUserId: "user-1",
      authorName: "Alex Rivera",
      body: "Need another look",
    });
    expect(withComment.comments.some((comment) => comment.body === "Need another look")).toBe(true);

    const approved = transitionMockInvoiceStatus("inv-2", "approved", {
      actorUserId: "user-2",
      actorName: "Jordan Lee",
      message: "Approved",
    });
    expect(approved.status).toBe("approved");
    expect(approved.activity.some((entry) => entry.message === "Approved")).toBe(true);
    expect(getMockPendingApprovals().some((item) => item.invoiceId === "inv-2")).toBe(false);
    expect(getMockApprovals().find((item) => item.invoiceId === "inv-2")?.status).toBe("approved");
  });

  it("returns undefined for unknown invoice ids", () => {
    expect(getMockInvoice("missing-invoice")).toBeUndefined();
  });

  it("switches mock session user", () => {
    expect(getMockSessionUser().id).toBe("user-1");
    const next = setMockSessionUserId("user-2");
    expect(next.role).toBe("approver");
    expect(getMockSessionUser().id).toBe("user-2");
  });

  it("includes inv-8 referenced by approvals", () => {
    expect(getMockInvoice("inv-8")).toBeDefined();
    expect(getMockApprovals().some((item) => item.invoiceId === "inv-8")).toBe(true);
  });

  it("seeds settings entities and supports upsert", () => {
    expect(getMockVendors().length).toBeGreaterThanOrEqual(4);
    expect(getMockGlAccounts().length).toBeGreaterThanOrEqual(3);
    expect(getMockDepartments().length).toBeGreaterThanOrEqual(3);
    expect(getMockUsers().length).toBeGreaterThanOrEqual(3);
    expect(getMockApprovalPolicies().length).toBeGreaterThanOrEqual(3);

    const vendor = upsertMockVendor({
      id: "vendor-new",
      name: "New Vendor",
      email: "new@example.com",
      defaultPaymentMethod: "ach",
    });
    expect(getMockVendors().some((row) => row.id === vendor.id)).toBe(true);

    upsertMockGlAccount({ id: "gl-new", code: "9999", name: "Misc" });
    expect(getMockGlAccounts().some((row) => row.id === "gl-new")).toBe(true);

    upsertMockDepartment({ id: "dept-new", code: "NEW", name: "New Dept" });
    expect(getMockDepartments().some((row) => row.id === "dept-new")).toBe(true);

    upsertMockUser({
      id: "user-new",
      name: "New User",
      email: "new.user@seahaven.example",
      role: "approver",
    });
    expect(getMockUsers().some((row) => row.id === "user-new")).toBe(true);

    upsertMockApprovalPolicy({
      id: "policy-new",
      name: "Ad hoc",
      amountThreshold: 250,
      approverRole: "admin",
    });
    expect(getMockApprovalPolicies().some((row) => row.id === "policy-new")).toBe(true);
  });

  it("lists pending approvals and updates status", () => {
    const pending = getMockPendingApprovals();
    expect(pending.length).toBeGreaterThanOrEqual(2);
    expect(getMockApprovals().length).toBeGreaterThanOrEqual(pending.length);

    const first = pending[0];
    const updated = updateMockApprovalStatus(first.id, "approved");
    expect(updated.status).toBe("approved");
    expect(getMockPendingApprovals().some((row) => row.id === first.id)).toBe(false);
  });

  it("throws when updating an unknown approval", () => {
    expect(() => updateMockApprovalStatus("missing", "rejected")).toThrow(
      /Mock approval not found/,
    );
  });
});