const {
  assertPeopleBaseline,
  buildRulePlan,
  execute,
  parseArgs,
} = require("../../../src/scripts/apply-ceo-finance-fallback");

function currentRows() {
  return [
    {
      id: "small-id",
      min_amount: "0.00",
      max_amount: "500.00",
      level1_role: "manager",
      level2_role: "finance",
      level3_role: null,
      owner_self_fallback_role: "finance_mgr",
    },
    {
      id: "medium-id",
      min_amount: "500.00",
      max_amount: "5000.00",
      level1_role: "manager",
      level2_role: "finance_mgr",
      level3_role: null,
      owner_self_fallback_role: "finance_mgr",
    },
    {
      id: "large-id",
      min_amount: "5000.00",
      max_amount: null,
      level1_role: "manager",
      level2_role: "ceo",
      level3_role: "finance_mgr",
      owner_self_fallback_role: "finance_mgr",
    },
  ];
}

describe("CEO finance fallback production apply contract", () => {
  it("builds the exact three-band target without exposing identifiers in the result shape", () => {
    const plan = buildRulePlan(currentRows());
    expect(plan.map((item) => ({ band: item.band, after: item.after }))).toEqual([
      {
        band: "small",
        after: {
          level1_role: "manager",
          level2_role: "finance",
          level3_role: null,
          owner_self_fallback_role: "finance",
        },
      },
      {
        band: "medium",
        after: {
          level1_role: "manager",
          level2_role: "finance",
          level3_role: null,
          owner_self_fallback_role: "finance",
        },
      },
      {
        band: "large",
        after: {
          level1_role: "manager",
          level2_role: "ceo",
          level3_role: "finance",
          owner_self_fallback_role: "finance",
        },
      },
    ]);
  });

  it.each([
    [currentRows().slice(0, 2), "approval_rule_count_drift"],
    [[...currentRows(), currentRows()[0]], "approval_rule_count_drift"],
    [currentRows().map((row, index) => index === 1 ? { ...row, level2_role: "finance" } : row), "approval_rule_role_drift:medium"],
    [currentRows().map((row, index) => index === 2 ? { ...row, min_amount: "6000" } : row), "approval_rule_amount_band_drift"],
  ])("fails closed on approval-rule drift", (rows, message) => {
    expect(() => buildRulePlan(rows)).toThrow(message);
  });

  it("requires one bound CEO without manager/fallback role, one bound non-CEO finance, and one admin", () => {
    expect(() => assertPeopleBaseline({
      ceos: [{ direct_manager_id: null, has_wecom_binding: true, roles: ["ceo"] }],
      finances: [{ has_wecom_binding: true, roles: ["finance"] }],
      admins: [{ roles: ["admin"] }],
    })).not.toThrow();

    expect(() => assertPeopleBaseline({ ceos: [], finances: [], admins: [] }))
      .toThrow("active_ceo_count_drift");
    expect(() => assertPeopleBaseline({
      ceos: [{ direct_manager_id: null, has_wecom_binding: true, roles: ["ceo", "finance"] }],
      finances: [{ has_wecom_binding: true, roles: ["finance"] }],
      admins: [{ roles: ["admin"] }],
    })).toThrow("ceo_holds_fallback_role");
  });

  it("defaults to dry-run and rejects unknown arguments", () => {
    expect(parseArgs([])).toEqual({ apply: false, format: "text" });
    expect(parseArgs(["--apply", "--format=json"])).toEqual({ apply: true, format: "json" });
    expect(() => parseArgs(["--force"])).toThrow("Unsupported argument");
  });

  it("supplies an explicit UUID for each raw audit-log insert", async () => {
    const ruleIds = [
      "11111111-1111-4111-8111-111111111111",
      "22222222-2222-4222-8222-222222222222",
      "33333333-3333-4333-8333-333333333333",
    ];
    const sourceRows = currentRows().map((row, index) => ({ ...row, id: ruleIds[index] }));
    const targetRows = sourceRows.map((row) => ({
      ...row,
      level2_role: row.id === ruleIds[2] ? "ceo" : "finance",
      level3_role: row.id === ruleIds[2] ? "finance" : null,
      owner_self_fallback_role: "finance",
    }));
    const adminId = "aaaaaaaa-aaaa-4aaa-8aaa-aaaaaaaaaaaa";
    const auditCalls = [];
    const transactionCommands = [];
    let ruleSelectCount = 0;
    let invariantCount = 0;
    const client = {
      query: vi.fn(async (sql, params = []) => {
        const normalized = String(sql).replace(/\s+/g, " ").trim();
        if (normalized.startsWith("BEGIN ") || normalized.startsWith("ROLLBACK")) {
          transactionCommands.push(normalized);
          return {};
        }
        if (normalized.includes("FROM approval_rules")) {
          ruleSelectCount += 1;
          return { rows: ruleSelectCount === 1 ? sourceRows : targetRows };
        }
        if (normalized.includes("JOIN employee_roles selected_role")) {
          if (params[0] === "ceo") {
            return { rows: [{ id: "ceo-id", direct_manager_id: null, has_wecom_binding: true, roles: ["ceo"] }] };
          }
          if (params[0] === "finance") {
            return { rows: [{ id: "finance-id", direct_manager_id: null, has_wecom_binding: true, roles: ["finance"] }] };
          }
          return { rows: [{ id: adminId, direct_manager_id: null, has_wecom_binding: false, roles: ["admin"] }] };
        }
        if (normalized.includes("AS active_employees")) {
          invariantCount += 1;
          return { rows: [{ active_employees: 6, active_role_rows: 8, active_bindings: 6, workflow_snapshots: 0 }] };
        }
        if (normalized.startsWith("UPDATE approval_rules")) return { rowCount: 1, rows: [{ id: params[0] }] };
        if (normalized.startsWith("INSERT INTO audit_logs")) {
          auditCalls.push({ sql: normalized, params });
          return { rowCount: 1 };
        }
        throw new Error(`unexpected query: ${normalized}`);
      }),
      release: vi.fn(),
    };
    const pool = { connect: vi.fn(async () => client), end: vi.fn(async () => {}) };

    await expect(execute({ apply: false, format: "json" }, pool)).resolves.toMatchObject({
      status: "DRY_RUN_PASS",
      rules: 3,
      auditRows: 0,
    });
    expect(invariantCount).toBe(2);
    expect(transactionCommands).toEqual([
      "BEGIN ISOLATION LEVEL SERIALIZABLE",
      "ROLLBACK",
    ]);
    expect(auditCalls).toHaveLength(3);
    for (const [index, call] of auditCalls.entries()) {
      expect(call.sql).toContain("(id, request_id, actor_id");
      expect(call.sql).toContain("VALUES ($1::uuid, $2, $3::uuid");
      expect(call.params[0]).toMatch(/^[0-9a-f]{8}-[0-9a-f]{4}-4[0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/i);
      expect(call.params[1]).toMatch(/^ceo-finance-fallback-[0-9a-f-]+$/i);
      expect(call.params[2]).toBe(adminId);
      expect(call.params[3]).toBe(ruleIds[index]);
      expect(JSON.parse(call.params[4])).toMatchObject({
        task: "07-28-ceo-finance-fallback",
        band: ["small", "medium", "large"][index],
      });
      expect(call.params).toHaveLength(5);
    }
  });
});