import { describe, expect, test } from "bun:test";
import { resolveClient, resolveProjectId } from "../src/services/helper.ts";
import { listProjects, getProject, getProjectSchema } from "../src/services/projects.ts";
import {
  listWorkPackages,
  getWorkPackage,
  searchWorkPackages,
} from "../src/services/work-packages.ts";
import { listQueries, getQuery, getQueryResults } from "../src/services/queries.ts";
import {
  listStatuses,
  listTypes,
  listPriorities,
  listUsers,
} from "../src/services/metadata.ts";
import * as domainServices from "../src/services/index.ts";
import {
  OpenProjectClient,
  OpenProjectAuthenticationError,
  OpenProjectError,
} from "../src/client/api-client.ts";
import { runWithContext, type RequestContext } from "../src/context.ts";

describe("Domain Services Helper", () => {
  test("resolveClient returns explicit client if provided", () => {
    const customClient = new OpenProjectClient({
      baseUrl: "http://example.com",
      apiKey: "custom-key",
    });
    const result = resolveClient(customClient);
    expect(result).toBe(customClient);
  });

  test("resolveClient falls back to getRequestContext().client when omitted", () => {
    const ambientClient = new OpenProjectClient({
      baseUrl: "http://example.com",
      apiKey: "ambient-key",
    });
    const context: RequestContext = {
      client: ambientClient,
      isReadOnly: false,
    };

    runWithContext(context, () => {
      const result = resolveClient();
      expect(result).toBe(ambientClient);
    });
  });

  test("resolveClient throws error when called without client and outside context", () => {
    expect(() => resolveClient()).toThrow("No active RequestContext found");
  });

  test("resolveProjectId returns numeric ID directly if number or numeric string", async () => {
    expect(await resolveProjectId(4)).toBe(4);
    expect(await resolveProjectId("42")).toBe(42);
  });

  test("resolveProjectId fetches project ID when string identifier provided", async () => {
    const mockFetch = async () => {
      return new Response(JSON.stringify({ id: 99, identifier: "custom-slug" }), {
        headers: { "Content-Type": "application/json" },
      });
    };
    const client = new OpenProjectClient({
      baseUrl: "http://example.com",
      apiKey: "test-key",
      fetchFn: mockFetch,
    });
    const id = await resolveProjectId("custom-slug", client);
    expect(id).toBe(99);
  });
});

describe("Projects Service", () => {
  const sampleProjectHal = {
    _type: "Project",
    id: 4,
    identifier: "mcp-test-project",
    name: "MCP Test Project",
    active: true,
    public: true,
    description: { format: "markdown", raw: "Dedicated test project" },
    _links: {
      self: { href: "/api/v3/projects/4", title: "MCP Test Project" },
      parent: { href: "/api/v3/projects/1", title: "Parent Project" },
    },
  };

  test("listProjects sends correct parameters and returns paginated ProjectSummary items", async () => {
    let requestedUrl = "";
    const mockFetch = async (input: string | URL | Request) => {
      requestedUrl = String(input);
      return new Response(
        JSON.stringify({
          _type: "Collection",
          total: 1,
          count: 1,
          pageSize: 10,
          offset: 1,
          _embedded: {
            elements: [sampleProjectHal],
          },
        }),
        { headers: { "Content-Type": "application/hal+json" } }
      );
    };

    const client = new OpenProjectClient({
      baseUrl: "http://example.com",
      apiKey: "test-key",
      fetchFn: mockFetch,
    });

    const result = await listProjects({ pageSize: 10, offset: 1, sortBy: '[["name","asc"]]' }, client);

    expect(requestedUrl).toContain("/api/v3/projects");
    expect(requestedUrl).toContain("pageSize=10");
    expect(requestedUrl).toContain("offset=1");
    expect(requestedUrl).toContain("sortBy=");
    expect(result.total).toBe(1);
    expect(result.items[0]!.id).toBe(4);
    expect(result.items[0]!.identifier).toBe("mcp-test-project");
    expect(result.items[0]!.name).toBe("MCP Test Project");
  });

  test("getProject retrieves project detail by id or identifier", async () => {
    let requestedUrl = "";
    const mockFetch = async (input: string | URL | Request) => {
      requestedUrl = String(input);
      return new Response(JSON.stringify(sampleProjectHal), {
        headers: { "Content-Type": "application/hal+json" },
      });
    };

    const client = new OpenProjectClient({
      baseUrl: "http://example.com",
      apiKey: "test-key",
      fetchFn: mockFetch,
    });

    const result = await getProject("mcp-test-project", client);
    expect(requestedUrl).toContain("/api/v3/projects/mcp-test-project");
    expect(result.id).toBe(4);
    expect(result.parentId).toBe(1);
    expect(result.parentName).toBe("Parent Project");
  });

  test("getProject encodes URI component in id or identifier parameter", async () => {
    let requestedUrl = "";
    const mockFetch = async (input: string | URL | Request) => {
      requestedUrl = String(input);
      return new Response(JSON.stringify(sampleProjectHal), {
        headers: { "Content-Type": "application/hal+json" },
      });
    };

    const client = new OpenProjectClient({
      baseUrl: "http://example.com",
      apiKey: "test-key",
      fetchFn: mockFetch,
    });

    await getProject("special slug/test", client);
    expect(requestedUrl).toContain("/api/v3/projects/special%20slug%2Ftest");
  });

  test("listProjects serializes filters parameter to JSON query string", async () => {
    let requestedUrl = "";
    const mockFetch = async (input: string | URL | Request) => {
      requestedUrl = String(input);
      return new Response(
        JSON.stringify({
          _type: "Collection",
          total: 1,
          count: 1,
          pageSize: 10,
          offset: 1,
          _embedded: { elements: [sampleProjectHal] },
        }),
        { headers: { "Content-Type": "application/hal+json" } }
      );
    };

    const client = new OpenProjectClient({
      baseUrl: "http://example.com",
      apiKey: "test-key",
      fetchFn: mockFetch,
    });

    const filters = [{ active: { operator: "=", values: ["t"] } }];
    await listProjects({ filters }, client);

    expect(requestedUrl).toContain("/api/v3/projects");
    expect(requestedUrl).toContain("filters=");
    const decodedUrl = decodeURIComponent(requestedUrl);
    expect(decodedUrl).toContain(JSON.stringify(filters));
  });

  test("listProjects resolves ambient client from RequestContext when client is omitted", async () => {
    let requestedUrl = "";
    const mockFetch = async (input: string | URL | Request) => {
      requestedUrl = String(input);
      return new Response(
        JSON.stringify({
          _type: "Collection",
          total: 1,
          count: 1,
          pageSize: 10,
          offset: 1,
          _embedded: { elements: [sampleProjectHal] },
        }),
        { headers: { "Content-Type": "application/hal+json" } }
      );
    };

    const ambientClient = new OpenProjectClient({
      baseUrl: "http://example.com",
      apiKey: "ambient-key",
      fetchFn: mockFetch,
    });

    const context: RequestContext = {
      client: ambientClient,
      isReadOnly: false,
    };

    const result = await runWithContext(context, async () => {
      return listProjects();
    });

    expect(requestedUrl).toContain("/api/v3/projects");
    expect(result.total).toBe(1);
  });

  test("getProjectSchema retrieves project schema definition", async () => {
    const mockFetch = async () => {
      return new Response(JSON.stringify({ _type: "Schema", name: { type: "String" } }), {
        headers: { "Content-Type": "application/json" },
      });
    };

    const client = new OpenProjectClient({
      baseUrl: "http://example.com",
      apiKey: "test-key",
      fetchFn: mockFetch,
    });

    const result = await getProjectSchema(client);
    expect(result._type).toBe("Schema");
  });
});

describe("Work Packages Service", () => {
  const sampleWpHal = {
    _type: "WorkPackage",
    id: 38,
    subject: "Implement MCP Server Core Protocol",
    description: { format: "markdown", raw: "Build stdio transport" },
    startDate: "2026-09-01",
    dueDate: "2026-09-10",
    lockVersion: 3,
    _links: {
      self: { href: "/api/v3/work_packages/38", title: "Implement MCP Server Core Protocol" },
      project: { href: "/api/v3/projects/4", title: "MCP Test Project" },
      type: { href: "/api/v3/types/1", title: "Task" },
      status: { href: "/api/v3/statuses/2", title: "In progress" },
      priority: { href: "/api/v3/priorities/8", title: "High" },
      author: { href: "/api/v3/users/1", title: "Admin User" },
      assignee: { href: "/api/v3/users/1", title: "Admin User" },
      parent: { href: "/api/v3/work_packages/30", title: "Epic Parent" },
      children: [
        { href: "/api/v3/work_packages/39", title: "Subtask 1" },
        { href: "/api/v3/work_packages/40", title: "Subtask 2" },
      ],
    },
  };

  test("listWorkPackages applies filter parameters and normalizes collection", async () => {
    let requestedUrl = "";
    const mockFetch = async (input: string | URL | Request) => {
      requestedUrl = String(input);
      return new Response(
        JSON.stringify({
          _type: "Collection",
          total: 1,
          count: 1,
          pageSize: 25,
          offset: 1,
          _embedded: { elements: [sampleWpHal] },
        }),
        { headers: { "Content-Type": "application/hal+json" } }
      );
    };

    const client = new OpenProjectClient({
      baseUrl: "http://example.com",
      apiKey: "test-key",
      fetchFn: mockFetch,
    });

    const result = await listWorkPackages(
      { projectId: 4, status: "open", typeId: 1, pageSize: 25 },
      client
    );

    expect(requestedUrl).toContain("/api/v3/work_packages");
    expect(requestedUrl).toContain("filters=");
    expect(requestedUrl).toContain("pageSize=25");
    expect(result.total).toBe(1);
    expect(result.items[0]!.id).toBe(38);
    expect(result.items[0]!.subject).toBe("Implement MCP Server Core Protocol");
    expect(result.items[0]!.status).toBe("In progress");
    expect(result.items[0]!.type).toBe("Task");
  });

  test("getWorkPackage returns full details with parent and children", async () => {
    const mockFetch = async () => {
      return new Response(JSON.stringify(sampleWpHal), {
        headers: { "Content-Type": "application/hal+json" },
      });
    };

    const client = new OpenProjectClient({
      baseUrl: "http://example.com",
      apiKey: "test-key",
      fetchFn: mockFetch,
    });

    const wp = await getWorkPackage(38, client);
    expect(wp.id).toBe(38);
    expect(wp.subject).toBe("Implement MCP Server Core Protocol");
    expect(wp.parent?.id).toBe(30);
    expect(wp.parent?.subject).toBe("Epic Parent");
    expect(wp.children?.length).toBe(2);
    expect(wp.children?.[0]?.id).toBe(39);
    expect(wp.lockVersion).toBe(3);
  });

  test("searchWorkPackages sets subject query filter", async () => {
    // The union strategy issues several requests in parallel (the precise
    // subject filter, a broad recency window, and per-candidate enrichment
    // calls), so every requested URL is captured rather than just the last.
    const requestedUrls: string[] = [];
    const mockFetch = async (input: string | URL | Request) => {
      requestedUrls.push(String(input));
      return new Response(
        JSON.stringify({
          _type: "Collection",
          total: 1,
          count: 1,
          pageSize: 10,
          offset: 1,
          _embedded: { elements: [sampleWpHal] },
        }),
        { headers: { "Content-Type": "application/hal+json" } }
      );
    };

    const client = new OpenProjectClient({
      baseUrl: "http://example.com",
      apiKey: "test-key",
      fetchFn: mockFetch,
    });

    await searchWorkPackages("MCP Server", { projectId: 4 }, client);

    // Filter must include substring operator for subject on the precise request.
    const decodedUrls = requestedUrls.map((url) => decodeURIComponent(url.replace(/\+/g, " ")));
    const subjectRequestUrl = decodedUrls.find((url) => url.includes('"subject"'));
    expect(subjectRequestUrl).toBeDefined();
    expect(subjectRequestUrl).toContain("MCP Server");
  });
});

describe("Queries Service", () => {
  const sampleQueryHal = {
    _type: "Query",
    id: 30,
    name: "MCP Active Tasks",
    public: true,
    starred: false,
    _links: {
      self: { href: "/api/v3/queries/30", title: "MCP Active Tasks" },
      project: { href: "/api/v3/projects/4", title: "MCP Test Project" },
      results: { href: "/api/v3/queries/30/results" },
      columns: [
        { href: "/api/v3/queries/columns/id", title: "ID" },
        { href: "/api/v3/queries/columns/subject", title: "Subject" },
        { href: "/api/v3/queries/columns/status", title: "Status" },
      ],
      sortBy: [
        { href: "/api/v3/queries/sort_bys/id-asc", title: "ID ascending" },
      ],
    },
    filters: [
      {
        _links: {
          operator: { href: "/api/v3/queries/operators/=", title: "is" },
          filter: { href: "/api/v3/queries/filters/status", title: "Status" },
        },
        name: "status",
        values: ["open"],
      },
    ],
  };

  test("listQueries filters by project when provided", async () => {
    let requestedUrl = "";
    const mockFetch = async (input: string | URL | Request) => {
      requestedUrl = String(input);
      return new Response(
        JSON.stringify({
          _type: "Collection",
          total: 1,
          count: 1,
          pageSize: 20,
          offset: 1,
          _embedded: { elements: [sampleQueryHal] },
        }),
        { headers: { "Content-Type": "application/hal+json" } }
      );
    };

    const client = new OpenProjectClient({
      baseUrl: "http://example.com",
      apiKey: "test-key",
      fetchFn: mockFetch,
    });

    const result = await listQueries({ projectId: 4, pageSize: 20 }, client);
    expect(requestedUrl).toContain("/api/v3/queries");
    expect(requestedUrl).toContain("pageSize=20");
    const decodedUrl = decodeURIComponent(requestedUrl);
    expect(decodedUrl).toContain('"project"');
    expect(result.items[0]!.id).toBe(30);
    expect(result.items[0]!.name).toBe("MCP Active Tasks");
    expect(result.items[0]!.projectId).toBe(4);
  });

  test("getQuery returns normalized details with columns and filters", async () => {
    const mockFetch = async () => {
      return new Response(JSON.stringify(sampleQueryHal), {
        headers: { "Content-Type": "application/hal+json" },
      });
    };

    const client = new OpenProjectClient({
      baseUrl: "http://example.com",
      apiKey: "test-key",
      fetchFn: mockFetch,
    });

    const query = await getQuery(30, client);
    expect(query.id).toBe(30);
    expect(query.name).toBe("MCP Active Tasks");
    expect(query.columns).toContain("ID");
    expect(query.columns).toContain("Subject");
    expect(query.sortBy?.[0]?.attribute).toBe("id");
    expect(query.sortBy?.[0]?.direction).toBe("asc");
    expect(query.filters?.[0]?.field).toBe("Status");
    expect(query.resultsHref).toBe("/api/v3/queries/30/results");
  });

  test("getQueryResults fetches work packages produced by saved query", async () => {
    let requestedUrl = "";
    const mockFetch = async (input: string | URL | Request) => {
      requestedUrl = String(input);
      return new Response(
        JSON.stringify({
          _type: "Collection",
          total: 1,
          count: 1,
          pageSize: 10,
          offset: 1,
          _embedded: {
            elements: [
              {
                _type: "WorkPackage",
                id: 38,
                subject: "Implement MCP Server Core Protocol",
                _links: {
                  self: { href: "/api/v3/work_packages/38" },
                  type: { title: "Task" },
                  status: { title: "In progress" },
                },
              },
            ],
          },
        }),
        { headers: { "Content-Type": "application/hal+json" } }
      );
    };

    const client = new OpenProjectClient({
      baseUrl: "http://example.com",
      apiKey: "test-key",
      fetchFn: mockFetch,
    });

    const result = await getQueryResults(30, { pageSize: 10 }, client);
    expect(requestedUrl).toContain("/api/v3/queries/30/results");
    expect(requestedUrl).toContain("pageSize=10");
    expect(result.items[0]!.id).toBe(38);
    expect(result.items[0]!.subject).toBe("Implement MCP Server Core Protocol");
  });
});

describe("Metadata Service", () => {
  test("listStatuses retrieves and unpacks status items", async () => {
    const mockFetch = async () => {
      return new Response(
        JSON.stringify({
          _type: "Collection",
          _embedded: {
            elements: [
              { id: 1, name: "New", isClosed: false, isDefault: true },
              { id: 2, name: "Closed", isClosed: true, isDefault: false },
            ],
          },
        }),
        { headers: { "Content-Type": "application/hal+json" } }
      );
    };

    const client = new OpenProjectClient({
      baseUrl: "http://example.com",
      apiKey: "test-key",
      fetchFn: mockFetch,
    });

    const statuses = await listStatuses(client);
    expect(statuses.length).toBe(2);
    expect(statuses[0]!.name).toBe("New");
    expect(statuses[0]!.isClosed).toBe(false);
    expect(statuses[1]!.isClosed).toBe(true);
  });

  test("listTypes scopes to project when projectId is provided", async () => {
    let requestedUrl = "";
    const mockFetch = async (input: string | URL | Request) => {
      requestedUrl = String(input);
      return new Response(
        JSON.stringify({
          _type: "Collection",
          _embedded: {
            elements: [{ id: 1, name: "Task", isMilestone: false }],
          },
        }),
        { headers: { "Content-Type": "application/hal+json" } }
      );
    };

    const client = new OpenProjectClient({
      baseUrl: "http://example.com",
      apiKey: "test-key",
      fetchFn: mockFetch,
    });

    const types = await listTypes({ projectId: 4 }, client);
    expect(requestedUrl).toContain("/api/v3/projects/4/types");
    expect(types[0]!.name).toBe("Task");
  });

  test("listTypes fetches global types when projectId is omitted", async () => {
    let requestedUrl = "";
    const mockFetch = async (input: string | URL | Request) => {
      requestedUrl = String(input);
      return new Response(
        JSON.stringify({
          _type: "Collection",
          _embedded: {
            elements: [{ id: 1, name: "Task", isMilestone: false }],
          },
        }),
        { headers: { "Content-Type": "application/hal+json" } }
      );
    };

    const client = new OpenProjectClient({
      baseUrl: "http://example.com",
      apiKey: "test-key",
      fetchFn: mockFetch,
    });

    const types = await listTypes(undefined, client);
    expect(requestedUrl).toContain("/api/v3/types");
    expect(requestedUrl).not.toContain("/projects/");
    expect(types[0]!.name).toBe("Task");
  });

  test("listPriorities retrieves priority items", async () => {
    const mockFetch = async () => {
      return new Response(
        JSON.stringify({
          _type: "Collection",
          _embedded: {
            elements: [{ id: 8, name: "High", isActive: true }],
          },
        }),
        { headers: { "Content-Type": "application/hal+json" } }
      );
    };

    const client = new OpenProjectClient({
      baseUrl: "http://example.com",
      apiKey: "test-key",
      fetchFn: mockFetch,
    });

    const priorities = await listPriorities(client);
    expect(priorities[0]!.name).toBe("High");
  });

  test("listUsers returns paginated UserItem list", async () => {
    let requestedUrl = "";
    const mockFetch = async (input: string | URL | Request) => {
      requestedUrl = String(input);
      return new Response(
        JSON.stringify({
          _type: "Collection",
          total: 1,
          count: 1,
          pageSize: 25,
          offset: 1,
          _embedded: {
            elements: [{ id: 1, name: "Admin User", login: "admin", admin: true }],
          },
        }),
        { headers: { "Content-Type": "application/hal+json" } }
      );
    };

    const client = new OpenProjectClient({
      baseUrl: "http://example.com",
      apiKey: "test-key",
      fetchFn: mockFetch,
    });

    const users = await listUsers({ pageSize: 25, offset: 1 }, client);
    expect(requestedUrl).toContain("/api/v3/users");
    expect(users.items[0]!.login).toBe("admin");
    expect(users.items[0]!.admin).toBe(true);
  });

  test("src/services/index.ts exports all services properly", () => {
    expect(typeof domainServices.listProjects).toBe("function");
    expect(typeof domainServices.getProject).toBe("function");
    expect(typeof domainServices.getProjectSchema).toBe("function");
    expect(typeof domainServices.listWorkPackages).toBe("function");
    expect(typeof domainServices.getWorkPackage).toBe("function");
    expect(typeof domainServices.listWorkPackageActivities).toBe("function");
    expect(typeof domainServices.listQueries).toBe("function");
    expect(typeof domainServices.getQuery).toBe("function");
    expect(typeof domainServices.listStatuses).toBe("function");
    expect(typeof domainServices.listTypes).toBe("function");
    expect(typeof domainServices.listPriorities).toBe("function");
    expect(typeof domainServices.listUsers).toBe("function");
    expect(typeof domainServices.listMeetings).toBe("function");
    expect(typeof domainServices.getMeeting).toBe("function");
    expect(typeof domainServices.searchMeetings).toBe("function");
    expect(typeof domainServices.getWikiPage).toBe("function");
    expect(typeof domainServices.searchWikiPages).toBe("function");
    expect(typeof domainServices.listWikiPageLinks).toBe("function");
  });
});

describe("Live Container Integration (Domain Services)", () => {
  const liveBaseUrl = process.env.OPENPROJECT_BASE_URL || "http://localhost:8080";
  const liveApiKey = process.env.OPENPROJECT_API_KEY;

  const runLiveTests = liveApiKey ? test : test.skip;

  runLiveTests("live: projects service operations", async () => {
    const client = new OpenProjectClient({ baseUrl: liveBaseUrl, apiKey: liveApiKey! });

    const projects = await domainServices.listProjects({ pageSize: 5 }, client);
    expect(projects.items.length).toBeGreaterThan(0);

    const testProject = await domainServices.getProject("mcp-test-project", client);
    expect(testProject.identifier).toBe("mcp-test-project");
    expect(testProject.id).toBeGreaterThan(0);
  });

  runLiveTests("live: work packages service operations", async () => {
    const client = new OpenProjectClient({ baseUrl: liveBaseUrl, apiKey: liveApiKey! });

    const wps = await domainServices.listWorkPackages({ projectId: "mcp-test-project" }, client);
    expect(wps.items.length).toBeGreaterThan(0);

    const firstWp = await domainServices.getWorkPackage(wps.items[0]!.id, client);
    expect(firstWp.id).toBe(wps.items[0]!.id);
    expect(firstWp.subject).toBeDefined();

    const searchRes = await domainServices.searchWorkPackages("MCP", { projectId: "mcp-test-project" }, client);
    expect(searchRes.elements.length).toBeGreaterThan(0);
  });

  runLiveTests("live: queries service operations", async () => {
    const client = new OpenProjectClient({ baseUrl: liveBaseUrl, apiKey: liveApiKey! });

    const queries = await domainServices.listQueries({ projectId: "mcp-test-project" }, client);
    expect(queries.items.length).toBeGreaterThan(0);

    const activeQuery = queries.items.find((q) => q.name.includes("MCP Active Tasks"));
    expect(activeQuery).toBeDefined();
    if (activeQuery) {
      const detail = await domainServices.getQuery(activeQuery.id, client);
      expect(detail.id).toBe(activeQuery.id);

      const results = await domainServices.getQueryResults(activeQuery.id, {}, client);
      expect(results.items.length).toBeGreaterThan(0);
    }
  });

  runLiveTests("live: metadata service operations", async () => {
    const client = new OpenProjectClient({ baseUrl: liveBaseUrl, apiKey: liveApiKey! });

    const statuses = await domainServices.listStatuses(client);
    expect(statuses.length).toBeGreaterThan(0);

    const types = await domainServices.listTypes({ projectId: "mcp-test-project" }, client);
    expect(types.length).toBeGreaterThan(0);

    const priorities = await domainServices.listPriorities(client);
    expect(priorities.length).toBeGreaterThan(0);

    const users = await domainServices.listUsers({ pageSize: 5 }, client);
    expect(users.items.length).toBeGreaterThan(0);
  });

  runLiveTests("live: meetings service operations", async () => {
    const client = new OpenProjectClient({ baseUrl: liveBaseUrl, apiKey: liveApiKey! });

    // list meetings (should return meetings 2..5)
    const meetings = await domainServices.listMeetings({ projectId: 1 }, client);
    expect(meetings.elements.length).toBeGreaterThanOrEqual(4);
    const meetingIds = meetings.elements.map((m) => m.id);
    expect(meetingIds).toContain(2);
    expect(meetingIds).toContain(3);
    expect(meetingIds).toContain(4);
    expect(meetingIds).toContain(5);

    // get meeting (should return meeting with title "Weekly" and agenda items)
    const meeting = await domainServices.getMeeting(2, { includeAgendaItems: true }, client);
    expect(meeting.id).toBe(2);
    expect(meeting.title).toBe("Weekly");
    expect(meeting.agendaItems).toBeDefined();
    expect(meeting.agendaItems!.length).toBeGreaterThan(0);
    expect(meeting.agendaItems![0]!.title).toBeDefined();

    // search meetings (should return results with matching items)
    const searchRes = await domainServices.searchMeetings({ query: "Weekly" }, client);
    expect(searchRes.elements.length).toBeGreaterThan(0);
    const match = searchRes.elements.find((r) => r.meeting.title.includes("Weekly"));
    expect(match).toBeDefined();
  });

  runLiveTests("live: wikis service operations", async () => {
    const client = new OpenProjectClient({ baseUrl: liveBaseUrl, apiKey: liveApiKey! });

    // get wiki page (should return title "Wiki", project id 1)
    const wiki = await domainServices.getWikiPage(1, client);
    expect(wiki.id).toBe(1);
    expect(wiki.title).toBe("Wiki");
    expect(wiki.project.id).toBe(1);

    // search wiki pages (should discover and return wiki page 1)
    const searchRes = await domainServices.searchWikiPages({ query: "Wiki" }, client);
    expect(searchRes.length).toBeGreaterThan(0);
    const found = searchRes.find((w) => w.id === 1);
    expect(found).toBeDefined();
    expect(found!.title).toBe("Wiki");
    expect(found!.project.id).toBe(1);
  });

  runLiveTests("live: activities service operations", async () => {
    const client = new OpenProjectClient({ baseUrl: liveBaseUrl, apiKey: liveApiKey! });

    // list work package activities (should return activities for WP 38)
    const activities = await domainServices.listWorkPackageActivities({ workPackageId: 38 }, client);
    expect(activities.length).toBeGreaterThan(0);
    expect(activities[0]!.id).toBeDefined();
  });
});

describe("Work Package Fuzzy Search", () => {
  function workPackageFixtureClient(calls: string[] = []) {
    const elements = [
      {
        _type: "WorkPackage",
        id: 1,
        subject: "Fix login redirect",
        _links: {
          type: { title: "Bug" },
          status: { title: "New" },
          project: { href: "/api/v3/projects/1", title: "Demo project" },
        },
        updatedAt: "2026-09-10T00:00:00Z",
      },
      {
        _type: "WorkPackage",
        id: 2,
        subject: "Update dependencies",
        _links: {
          type: { title: "Task" },
          status: { title: "New" },
          project: { href: "/api/v3/projects/1", title: "Demo project" },
        },
        updatedAt: "2026-09-11T00:00:00Z",
      },
    ];

    return {
      get: async (path: string, query?: Record<string, unknown>) => {
        // Record the query alongside the path so assertions can inspect the
        // filter payload (the real client encodes filters into the query
        // string of the resolved URL rather than the bare path).
        calls.push(query ? `${path}?${JSON.stringify(query)}` : path);
        if (path.startsWith("work_packages/") || path.startsWith("/api/v3/work_packages/")) {
          // Extract the id following "work_packages/" specifically, rather
          // than concatenating every digit in the path: the activities path
          // (`/api/v3/work_packages/{id}/activities`) contains a stray digit
          // in "v3" that a blanket \D+ strip would fold into the id.
          const id = Number(path.match(/work_packages\/(\d+)/)?.[1] ?? NaN);
          if (path.includes("activities")) {
            return {
              _type: "Collection",
              _embedded: {
                elements:
                  id === 2
                    ? [
                        {
                          id: 90,
                          version: 1,
                          createdAt: "2026-09-11T00:00:00Z",
                          comment: { raw: "Blocked by the expired TLS certificate" },
                          _links: { user: { href: "/api/v3/users/4", title: "Admin" } },
                        },
                      ]
                    : [],
              },
            };
          }
          const match = elements.find((e) => e.id === id);
          return { ...match, description: { raw: id === 1 ? "Session cookie is dropped" : "" } };
        }
        return {
          _type: "Collection",
          total: elements.length,
          count: elements.length,
          pageSize: 100,
          offset: 1,
          _embedded: { elements },
        };
      },
    } as unknown as OpenProjectClient;
  }

  test("finds a work package despite a typo in the subject query", async () => {
    const result = await searchWorkPackages("login redirct", {}, workPackageFixtureClient());
    expect(result.elements[0]!.workPackage.id).toBe(1);
  });

  test("finds a work package by a comment only", async () => {
    const result = await searchWorkPackages("TLS certificate", {}, workPackageFixtureClient());
    expect(result.elements[0]!.workPackage.id).toBe(2);
    expect(result.elements[0]!.matchedFields).toContain("comments");
  });

  test("finds a work package by description only", async () => {
    const result = await searchWorkPackages("session cookie", {}, workPackageFixtureClient());
    expect(result.elements[0]!.workPackage.id).toBe(1);
    expect(result.elements[0]!.matchedFields).toContain("description");
  });

  test("still issues the precise server-side subject filter", async () => {
    const calls: string[] = [];
    await searchWorkPackages("login", {}, workPackageFixtureClient(calls));
    expect(calls.some((path) => path.includes("subject"))).toBe(true);
  });

  test("exact mode finds nothing for a typo", async () => {
    const result = await searchWorkPackages(
      "login redirct",
      { matchMode: "exact" },
      workPackageFixtureClient()
    );
    expect(result.elements).toHaveLength(0);
  });

  test("propagates an auth failure from candidate fetch instead of reporting no results", async () => {
    const client = {
      get: async () => {
        throw new OpenProjectAuthenticationError();
      },
    } as unknown as OpenProjectClient;

    await expect(searchWorkPackages("anything", {}, client)).rejects.toThrow(
      OpenProjectAuthenticationError
    );
  });

  test("a non-fatal failure on one candidate leg still returns results from the other", async () => {
    let calls = 0;
    const client = {
      get: async (path: string) => {
        calls++;
        // Fail the precise (subject-filtered) leg non-fatally; the broad
        // leg (no subject filter) should still supply candidates.
        if (calls === 1) {
          throw new OpenProjectError("boom", { statusCode: 500 });
        }
        return {
          _type: "Collection",
          total: 1,
          count: 1,
          pageSize: 100,
          offset: 1,
          _embedded: {
            elements: [
              {
                _type: "WorkPackage",
                id: 1,
                subject: "Fix login redirect",
                _links: {
                  type: { title: "Bug" },
                  status: { title: "New" },
                  project: { href: "/api/v3/projects/1", title: "Demo project" },
                },
                updatedAt: "2026-09-10T00:00:00Z",
              },
            ],
          },
        };
      },
    } as unknown as OpenProjectClient;

    const result = await searchWorkPackages("login", {}, client);
    expect(result.elements[0]!.workPackage.id).toBe(1);
  });
});


/**
 * These fixtures deliberately HONOUR the server-side `subject ~` filter.
 * `workPackageFixtureClient` above returns every element for any collection
 * request, which is why the exact-mode candidate starvation bug was invisible
 * to the suite: a subject-filtered leg that returns the whole corpus looks
 * identical to a broad leg.
 */
describe("Work Package Search Candidate Union", () => {
  interface FixtureElement {
    _type: string;
    id: number;
    subject: string;
    _links: Record<string, unknown>;
    updatedAt: string;
  }

  function makeElement(id: number, subject: string, updatedAt: string): FixtureElement {
    return {
      _type: "WorkPackage",
      id,
      subject,
      _links: {
        type: { title: "Bug" },
        status: { title: "New" },
        project: { href: "/api/v3/projects/1", title: "Demo project" },
      },
      updatedAt,
    };
  }

  /** Reads the `subject ~` value out of the serialized filter payload. */
  function subjectFilterOf(query?: Record<string, unknown>): string | undefined {
    const raw = query?.filters;
    if (typeof raw !== "string") return undefined;
    const filters = JSON.parse(raw) as Array<Record<string, { values?: string[] }>>;
    for (const filter of filters) {
      const subject = filter.subject;
      if (subject) return subject.values?.[0];
    }
    return undefined;
  }

  /**
   * A fixture client that applies the subject filter server-side, the way a
   * real OpenProject instance does.
   */
  function subjectAwareClient(
    elements: FixtureElement[],
    deep: Record<number, { description?: string; comment?: string }>,
    calls: Array<{ path: string; query?: Record<string, unknown> }> = []
  ) {
    return {
      get: async (path: string, query?: Record<string, unknown>) => {
        calls.push({ path, query });

        if (path.startsWith("work_packages/") || path.startsWith("/api/v3/work_packages/")) {
          const id = Number(path.match(/work_packages\/(\d+)/)?.[1] ?? NaN);
          if (path.includes("activities")) {
            const comment = deep[id]?.comment;
            return {
              _type: "Collection",
              _embedded: {
                elements: comment
                  ? [
                      {
                        id: id * 10,
                        version: 1,
                        createdAt: "2026-09-11T00:00:00Z",
                        comment: { raw: comment },
                        _links: { user: { href: "/api/v3/users/4", title: "Admin" } },
                      },
                    ]
                  : [],
              },
            };
          }
          const match = elements.find((e) => e.id === id);
          return { ...match, description: { raw: deep[id]?.description ?? "" } };
        }

        const subject = subjectFilterOf(query);
        const matched =
          subject === undefined
            ? elements
            : elements.filter((e) =>
                e.subject.toLowerCase().includes(subject.toLowerCase())
              );

        return {
          _type: "Collection",
          total: matched.length,
          count: matched.length,
          pageSize: 100,
          offset: 1,
          _embedded: { elements: matched },
        };
      },
    } as unknown as OpenProjectClient;
  }

  const elements = [
    makeElement(1, "Fix login redirect", "2026-09-10T00:00:00Z"),
    makeElement(2, "Update dependencies", "2026-09-11T00:00:00Z"),
  ];
  const deep = {
    1: { description: "Session cookie is dropped" },
    2: { comment: "Blocked by error ERR_TLS_EXPIRED on deploy" },
  };

  test("the subject-aware fixture really does filter (guards the tests below)", async () => {
    const result = await searchWorkPackages(
      "Update dependencies",
      { matchMode: "exact" },
      subjectAwareClient(elements, deep)
    );
    expect(result.elements.map((e) => e.workPackage.id)).toEqual([2]);
  });

  test("exact mode finds a comment-only match the subject filter cannot return", async () => {
    const result = await searchWorkPackages(
      "ERR_TLS_EXPIRED",
      { matchMode: "exact" },
      subjectAwareClient(elements, deep)
    );
    expect(result.elements).toHaveLength(1);
    expect(result.elements[0]!.workPackage.id).toBe(2);
    expect(result.elements[0]!.matchedFields).toContain("comments");
  });

  test("exact mode finds a description-only match the subject filter cannot return", async () => {
    const result = await searchWorkPackages(
      "Session cookie",
      { matchMode: "exact" },
      subjectAwareClient(elements, deep)
    );
    expect(result.elements).toHaveLength(1);
    expect(result.elements[0]!.workPackage.id).toBe(1);
    expect(result.elements[0]!.matchedFields).toContain("description");
  });

  test("exact mode still issues both the precise and the broad candidate leg", async () => {
    const calls: Array<{ path: string; query?: Record<string, unknown> }> = [];
    await searchWorkPackages(
      "login",
      { matchMode: "exact" },
      subjectAwareClient(elements, deep, calls)
    );
    const collectionCalls = calls.filter((c) => c.path === "work_packages");
    expect(collectionCalls.some((c) => subjectFilterOf(c.query) === "login")).toBe(true);
    expect(collectionCalls.some((c) => subjectFilterOf(c.query) === undefined)).toBe(true);
  });

  test("never requests a page size above the documented 100 maximum", async () => {
    const calls: Array<{ path: string; query?: Record<string, unknown> }> = [];
    await searchWorkPackages("login", {}, subjectAwareClient(elements, deep, calls));
    const pageSizes = calls
      .filter((c) => c.path === "work_packages")
      .map((c) => Number(c.query?.pageSize));
    expect(pageSizes.length).toBeGreaterThan(0);
    for (const pageSize of pageSizes) {
      expect(pageSize).toBeLessThanOrEqual(100);
    }
  });

  test("pages the candidate window until the server-reported total is collected", async () => {
    const requestedOffsets: number[] = [];
    // 150 candidates behind a server that hands back 100 per page: a single
    // pageSize=250 request would have been capped at 100 by a real instance.
    const corpus = Array.from({ length: 150 }, (_, i) =>
      makeElement(i + 1, `Candidate ${i + 1}`, "2026-09-10T00:00:00Z")
    );

    const client = {
      get: async (path: string, query?: Record<string, unknown>) => {
        if (path.startsWith("work_packages/") || path.startsWith("/api/v3/work_packages/")) {
          const id = Number(path.match(/work_packages\/(\d+)/)?.[1] ?? NaN);
          if (path.includes("activities")) {
            return { _type: "Collection", _embedded: { elements: [] } };
          }
          return { ...corpus.find((e) => e.id === id), description: { raw: "" } };
        }
        const pageSize = Number(query?.pageSize ?? 20);
        expect(pageSize).toBeLessThanOrEqual(100);
        const offset = Number(query?.offset ?? 1);
        if (subjectFilterOf(query) === undefined) {
          requestedOffsets.push(offset);
        }
        const start = (offset - 1) * pageSize;
        const page = corpus.slice(start, start + pageSize);
        return {
          _type: "Collection",
          total: corpus.length,
          count: page.length,
          pageSize,
          offset,
          _embedded: { elements: page },
        };
      },
    } as unknown as OpenProjectClient;

    const result = await searchWorkPackages("Candidate 137", {}, client);
    expect(requestedOffsets).toEqual([1, 2]);
    // Candidate 137 lives on the second page; without paging it is unreachable.
    expect(result.elements[0]!.workPackage.id).toBe(137);
  });
});

describe("Work Package Search Response Shape", () => {
  function pagedFixtureClient(count: number) {
    const elements = Array.from({ length: count }, (_, i) => ({
      _type: "WorkPackage",
      id: i + 1,
      subject: `Release checklist item ${i + 1}`,
      _links: {
        type: { title: "Task" },
        status: { title: "New" },
        project: { href: "/api/v3/projects/1", title: "Demo project" },
      },
      updatedAt: "2026-09-10T00:00:00Z",
    }));

    return {
      get: async (path: string) => {
        if (path.startsWith("work_packages/") || path.startsWith("/api/v3/work_packages/")) {
          const id = Number(path.match(/work_packages\/(\d+)/)?.[1] ?? NaN);
          if (path.includes("activities")) {
            return { _type: "Collection", _embedded: { elements: [] } };
          }
          return { ...elements.find((e) => e.id === id), description: { raw: "" } };
        }
        return {
          _type: "Collection",
          total: elements.length,
          count: elements.length,
          pageSize: 100,
          offset: 1,
          _embedded: { elements },
        };
      },
    } as unknown as OpenProjectClient;
  }

  test("offset is a page number: page 2 does not overlap page 1", async () => {
    const client = pagedFixtureClient(12);
    const page1 = await searchWorkPackages(
      "Release checklist item",
      { offset: 1, pageSize: 5 },
      client
    );
    const page2 = await searchWorkPackages(
      "Release checklist item",
      { offset: 2, pageSize: 5 },
      client
    );

    const whole = await searchWorkPackages(
      "Release checklist item",
      { offset: 1, pageSize: 100 },
      client
    );
    const allIds = whole.elements.map((e) => e.workPackage.id);
    const ids1 = page1.elements.map((e) => e.workPackage.id);
    const ids2 = page2.elements.map((e) => e.workPackage.id);

    expect(allIds).toHaveLength(12);
    expect(ids1).toEqual(allIds.slice(0, 5));
    // The bug returned allIds.slice(1, 6) here — four of five items repeated.
    expect(ids2).toEqual(allIds.slice(5, 10));
    expect(ids1.filter((id) => ids2.includes(id))).toEqual([]);
  });

  test("does not ship the result array twice", async () => {
    const result = await searchWorkPackages(
      "Release checklist item",
      {},
      pagedFixtureClient(3)
    );
    expect(result.elements).toHaveLength(3);
    expect(Object.keys(result)).not.toContain("items");
    expect(JSON.parse(JSON.stringify(result))).not.toHaveProperty("items");
  });
});