import { assertEquals } from "@std/assert";
import { executeOperations } from "./executor.ts";
import type { Operation } from "./operations.ts";
import type { ActualState } from "../state/actual.ts";

function emptyActual(): ActualState {
  return {
    groups: [],
    groupsByName: new Map(),
    groupsById: new Map(),
    setupKeys: [],
    setupKeysByName: new Map(),
    peers: [],
    peersByName: new Map(),
    peersById: new Map(),
    policies: [],
    policiesByName: new Map(),
    routes: [],
    routesByNetworkId: new Map(),
    dns: [],
    dnsByName: new Map(),
  };
}

Deno.test("executor calls createGroup for create_group op", async () => {
  const calls: string[] = [];
  const mockClient = {
    createGroup: (data: { name: string }) => {
      calls.push(`createGroup:${data.name}`);
      return Promise.resolve({
        id: "new-g1",
        name: data.name,
        peers_count: 0,
        peers: [],
        issued: "api" as const,
      });
    },
  };
  const ops: Operation[] = [
    { type: "create_group", name: "pilots" },
  ];
  const { results } = await executeOperations(
    ops,
    mockClient as never,
    emptyActual(),
  );
  assertEquals(calls, ["createGroup:pilots"]);
  assertEquals(results[0].status, "success");
});

Deno.test("executor aborts on first failure", async () => {
  const mockClient = {
    createGroup: () => Promise.reject(new Error("API down")),
    createSetupKey: () => Promise.resolve({ id: 1, key: "k", name: "key1" }),
  };
  const ops: Operation[] = [
    { type: "create_group", name: "pilots" },
    { type: "create_setup_key", name: "key1" },
  ];
  const { results } = await executeOperations(
    ops,
    mockClient as never,
    emptyActual(),
  );
  assertEquals(results[0].status, "failed");
  assertEquals(results.length, 1); // second op never executed
});

Deno.test("executor tracks created group IDs for setup key auto_groups", async () => {
  const calls: Array<{ method: string; data: unknown }> = [];
  const mockClient = {
    createGroup: (data: { name: string }) => {
      calls.push({ method: "createGroup", data });
      return Promise.resolve({
        id: "new-g1",
        name: data.name,
        peers_count: 0,
        peers: [],
        issued: "api" as const,
      });
    },
    createSetupKey: (data: Record<string, unknown>) => {
      calls.push({ method: "createSetupKey", data });
      return Promise.resolve({
        id: 1,
        name: data.name,
        key: "raw-key-123",
        type: data.type,
        expires: "2026-04-01T00:00:00Z",
        valid: true,
        revoked: false,
        used_times: 0,
        state: "valid" as const,
        auto_groups: data.auto_groups,
        usage_limit: data.usage_limit,
      });
    },
  };
  const ops: Operation[] = [
    { type: "create_group", name: "pilots" },
    {
      type: "create_setup_key",
      name: "key1",
      details: {
        type: "one-off",
        auto_groups: ["pilots"],
        usage_limit: 1,
        expires_in: 604800,
      },
    },
  ];
  const { results, createdKeys } = await executeOperations(
    ops,
    mockClient as never,
    emptyActual(),
  );
  assertEquals(results.length, 2);
  assertEquals(results[0].status, "success");
  assertEquals(results[1].status, "success");
  // The setup key call should have resolved "pilots" -> "new-g1"
  const setupKeyCall = calls.find((c) => c.method === "createSetupKey");
  assertEquals(
    (setupKeyCall?.data as Record<string, unknown>).auto_groups,
    ["new-g1"],
  );
  // Created keys map stores the raw key
  assertEquals(createdKeys.get("key1"), "raw-key-123");
});

Deno.test("executor resolves group IDs from actual state", async () => {
  const calls: Array<{ method: string; data: unknown }> = [];
  const actual = emptyActual();
  actual.groupsByName.set("pilots", {
    id: "existing-g1",
    name: "pilots",
    peers_count: 0,
    peers: [],
    issued: "api",
  });

  const mockClient = {
    createSetupKey: (data: Record<string, unknown>) => {
      calls.push({ method: "createSetupKey", data });
      return Promise.resolve({
        id: 1,
        name: data.name,
        key: "raw-key-456",
        type: data.type,
        expires: "2026-04-01T00:00:00Z",
        valid: true,
        revoked: false,
        used_times: 0,
        state: "valid" as const,
        auto_groups: data.auto_groups,
        usage_limit: data.usage_limit,
      });
    },
  };
  const ops: Operation[] = [
    {
      type: "create_setup_key",
      name: "key1",
      details: {
        type: "one-off",
        auto_groups: ["pilots"],
        usage_limit: 1,
        expires_in: 604800,
      },
    },
  ];
  const { results } = await executeOperations(
    ops,
    mockClient as never,
    actual,
  );
  assertEquals(results[0].status, "success");
  const setupKeyCall = calls.find((c) => c.method === "createSetupKey");
  assertEquals(
    (setupKeyCall?.data as Record<string, unknown>).auto_groups,
    ["existing-g1"],
  );
});

Deno.test("executor deletes group by resolving ID from actual", async () => {
  const calls: string[] = [];
  const actual = emptyActual();
  actual.groupsByName.set("stale-group", {
    id: "g-old",
    name: "stale-group",
    peers_count: 0,
    peers: [],
    issued: "api",
  });

  const mockClient = {
    deleteGroup: (id: string) => {
      calls.push(`deleteGroup:${id}`);
      return Promise.resolve();
    },
  };
  const ops: Operation[] = [
    { type: "delete_group", name: "stale-group" },
  ];
  const { results } = await executeOperations(
    ops,
    mockClient as never,
    actual,
  );
  assertEquals(calls, ["deleteGroup:g-old"]);
  assertEquals(results[0].status, "success");
});

Deno.test("executor stores error message on failure", async () => {
  const mockClient = {
    createGroup: () => Promise.reject(new Error("rate limited")),
  };
  const ops: Operation[] = [
    { type: "create_group", name: "pilots" },
  ];
  const { results } = await executeOperations(
    ops,
    mockClient as never,
    emptyActual(),
  );
  assertEquals(results[0].status, "failed");
  assertEquals(results[0].error, "rate limited");
});