import { TRPCError } from "@trpc/server";
import { describe, expect, it } from "vitest";
import {
  buildTimelineProjectAssignmentConflicts,
  buildTimelineProjectContextDetailResponse,
  buildTimelineProjectContextResponse,
  buildTimelineProjectContextSummary,
  buildTimelineShiftPreviewDetailResponse,
  resolveTimelineProjectContextPeriod,
} from "../router/timeline-project-context-support.js";

describe("timeline project context support", () => {
  it("derives the detail period from explicit input and validates order", () => {
    expect(resolveTimelineProjectContextPeriod({
      requestedStartDate: "2026-04-03",
      requestedEndDate: "2026-04-12",
      projectStartDate: new Date("2026-04-01T00:00:00.000Z"),
      projectEndDate: new Date("2026-04-10T00:00:00.000Z"),
    })).toEqual({
      startDate: new Date("2026-04-03T00:00:00.000Z"),
      endDate: new Date("2026-04-12T00:00:00.000Z"),
    });

    expect(() =>
      resolveTimelineProjectContextPeriod({
        requestedStartDate: "2026-04-12",
        requestedEndDate: "2026-04-03",
      }),
    ).toThrowError(new TRPCError({
      code: "BAD_REQUEST",
      message: "endDate must be on or after startDate.",
    }));
  });

  it("builds assignment conflict summaries with cross-project overlap counts", () => {
    expect(buildTimelineProjectAssignmentConflicts({
      projectId: "project_1",
      assignments: [
        {
          id: "assignment_1",
          resourceId: "resource_1",
          resource: { displayName: "Alice" },
          startDate: new Date("2026-04-01T00:00:00.000Z"),
          endDate: new Date("2026-04-05T00:00:00.000Z"),
          hoursPerDay: 8,
        },
        {
          id: "placeholder_1",
          resourceId: null,
          resource: null,
          startDate: new Date("2026-04-01T00:00:00.000Z"),
          endDate: new Date("2026-04-05T00:00:00.000Z"),
          hoursPerDay: 4,
        },
      ],
      allResourceAllocations: [
        {
          id: "assignment_1",
          resourceId: "resource_1",
          projectId: "project_1",
          project: { name: "Current", shortCode: "CUR" },
          startDate: new Date("2026-04-01T00:00:00.000Z"),
          endDate: new Date("2026-04-05T00:00:00.000Z"),
          hoursPerDay: 8,
          status: "ACTIVE",
        },
        {
          id: "booking_2",
          resourceId: "resource_1",
          projectId: "project_2",
          project: { name: "Other", shortCode: "OTH" },
          startDate: new Date("2026-04-04T00:00:00.000Z"),
          endDate: new Date("2026-04-07T00:00:00.000Z"),
          hoursPerDay: 6,
          status: "ACTIVE",
        },
        {
          id: "booking_3",
          resourceId: "resource_1",
          projectId: "project_1",
          project: { name: "Current", shortCode: "CUR" },
          startDate: new Date("2026-04-02T00:00:00.000Z"),
          endDate: new Date("2026-04-03T00:00:00.000Z"),
          hoursPerDay: 2,
          status: "PROPOSED",
        },
      ],
    })).toEqual([
      {
        assignmentId: "assignment_1",
        resourceId: "resource_1",
        resourceName: "Alice",
        startDate: "2026-04-01",
        endDate: "2026-04-05",
        hoursPerDay: 8,
        overlapCount: 2,
        crossProjectOverlapCount: 1,
        overlaps: [
          {
            id: "booking_2",
            projectId: "project_2",
            projectName: "Other",
            projectShortCode: "OTH",
            startDate: "2026-04-04",
            endDate: "2026-04-07",
            hoursPerDay: 6,
            status: "ACTIVE",
            sameProject: false,
          },
          {
            id: "booking_3",
            projectId: "project_1",
            projectName: "Current",
            projectShortCode: "CUR",
            startDate: "2026-04-02",
            endDate: "2026-04-03",
            hoursPerDay: 2,
            status: "PROPOSED",
            sameProject: true,
          },
        ],
      },
    ]);
  });

  it("combines timeline counts with holiday overlay summary data", () => {
    expect(buildTimelineProjectContextSummary({
      allocations: [{ projectId: "project_1", resourceId: "resource_1" }],
      demands: [{ projectId: "project_1" }],
      assignments: [{ projectId: "project_1", resourceId: "resource_1" }],
      resourceIds: ["resource_1", "resource_2"],
      allResourceAllocations: [{ id: "booking_1" }, { id: "booking_2" }],
      assignmentConflicts: [
        { crossProjectOverlapCount: 0 },
        { crossProjectOverlapCount: 2 },
      ],
      holidayOverlays: [
        {
          id: "overlay_1",
          resourceId: "resource_1",
          startDate: "2026-04-03",
          endDate: "2026-04-03",
          note: "Holiday",
          scope: "COUNTRY",
          calendarName: "DE",
          sourceType: "CALENDAR",
          countryCode: "DE",
          countryName: "Germany",
          federalState: null,
          metroCityName: null,
        },
        {
          id: "overlay_2",
          resourceId: "resource_2",
          startDate: "2026-04-04",
          endDate: "2026-04-04",
          note: "Holiday",
          scope: "CITY",
          calendarName: "Berlin",
          sourceType: "CALENDAR",
          countryCode: "DE",
          countryName: "Germany",
          federalState: "BE",
          metroCityName: "Berlin",
        },
      ],
    })).toEqual({
      allocationCount: 1,
      demandCount: 1,
      assignmentCount: 1,
      projectCount: 1,
      resourceCount: 1,
      resourceIds: 2,
      allResourceAllocationCount: 2,
      conflictedAssignmentCount: 1,
      overlayCount: 2,
      holidayResourceCount: 2,
      byScope: [
        { scope: "CITY", count: 1 },
        { scope: "COUNTRY", count: 1 },
      ],
    });
  });

  it("builds anonymized project context responses and detail summaries", () => {
    const directory = {
      config: { enabled: true, mode: "alias", domain: "example.test" },
      byResourceId: new Map([
        [
          "resource_1",
          {
            displayName: "Anon Alice",
            eid: "ANON-001",
            email: "anon-alice@example.test",
          },
        ],
      ]),
      byAliasEid: new Map([["anon-001", "resource_1"]]),
    };

    expect(buildTimelineProjectContextResponse({
      project: { id: "project_1" },
      allocations: [
        {
          id: "allocation_1",
          projectId: "project_1",
          resourceId: "resource_1",
          resource: { id: "resource_1", displayName: "Alice", eid: "E-001" },
        },
      ],
      demands: [{ id: "demand_1", projectId: "project_1" }],
      assignments: [
        {
          id: "assignment_1",
          projectId: "project_1",
          resourceId: "resource_1",
          resource: { id: "resource_1", displayName: "Alice", eid: "E-001" },
        },
      ],
      allResourceAllocations: [
        {
          id: "booking_1",
          resourceId: "resource_1",
          resource: { id: "resource_1", displayName: "Alice", eid: "E-001" },
        },
      ],
      resourceIds: ["resource_1"],
      directory: directory as never,
    })).toEqual({
      project: { id: "project_1" },
      allocations: [
        {
          id: "allocation_1",
          projectId: "project_1",
          resourceId: "resource_1",
          resource: { id: "resource_1", displayName: "Anon Alice", eid: "ANON-001" },
        },
      ],
      demands: [{ id: "demand_1", projectId: "project_1" }],
      assignments: [
        {
          id: "assignment_1",
          projectId: "project_1",
          resourceId: "resource_1",
          resource: { id: "resource_1", displayName: "Anon Alice", eid: "ANON-001" },
        },
      ],
      allResourceAllocations: [
        {
          id: "booking_1",
          resourceId: "resource_1",
          resource: { id: "resource_1", displayName: "Anon Alice", eid: "ANON-001" },
        },
      ],
      resourceIds: ["resource_1"],
    });

    expect(buildTimelineProjectContextDetailResponse({
      project: { id: "project_1" },
      period: {
        startDate: new Date("2026-04-01T00:00:00.000Z"),
        endDate: new Date("2026-04-05T00:00:00.000Z"),
      },
      allocations: [
        {
          id: "allocation_1",
          projectId: "project_1",
          resourceId: "resource_1",
          resource: { id: "resource_1", displayName: "Alice", eid: "E-001" },
        },
      ],
      demands: [{ id: "demand_1", projectId: "project_1" }],
      assignments: [
        {
          id: "assignment_1",
          projectId: "project_1",
          resourceId: "resource_1",
          resource: { id: "resource_1", displayName: "Alice", eid: "E-001" },
        },
      ],
      allResourceAllocations: [
        {
          id: "booking_1",
          resourceId: "resource_1",
          resource: { id: "resource_1", displayName: "Alice", eid: "E-001" },
        },
      ],
      resourceIds: ["resource_1"],
      assignmentConflicts: [{ crossProjectOverlapCount: 1, assignmentId: "assignment_1" }],
      holidayOverlays: [],
      directory: directory as never,
    })).toEqual({
      project: { id: "project_1" },
      period: {
        startDate: "2026-04-01",
        endDate: "2026-04-05",
      },
      summary: {
        allocationCount: 1,
        demandCount: 1,
        assignmentCount: 1,
        projectCount: 1,
        resourceCount: 1,
        resourceIds: 1,
        allResourceAllocationCount: 1,
        conflictedAssignmentCount: 1,
        overlayCount: 0,
        holidayResourceCount: 0,
        byScope: [],
      },
      allocations: [
        {
          id: "allocation_1",
          projectId: "project_1",
          resourceId: "resource_1",
          resource: { id: "resource_1", displayName: "Anon Alice", eid: "ANON-001" },
        },
      ],
      demands: [{ id: "demand_1", projectId: "project_1" }],
      assignments: [
        {
          id: "assignment_1",
          projectId: "project_1",
          resourceId: "resource_1",
          resource: { id: "resource_1", displayName: "Anon Alice", eid: "ANON-001" },
        },
      ],
      allResourceAllocations: [
        {
          id: "booking_1",
          resourceId: "resource_1",
          resource: { id: "resource_1", displayName: "Anon Alice", eid: "ANON-001" },
        },
      ],
      assignmentConflicts: [{ crossProjectOverlapCount: 1, assignmentId: "assignment_1" }],
      holidayOverlays: [],
      resourceIds: ["resource_1"],
    });
  });

  it("builds shift preview detail payloads with formatted dates", () => {
    expect(buildTimelineShiftPreviewDetailResponse({
      project: {
        id: "project_1",
        name: "Project One",
        shortCode: "PRJ",
        status: "ACTIVE",
        responsiblePerson: "Alice",
        startDate: new Date("2026-04-01T00:00:00.000Z"),
        endDate: new Date("2026-04-10T00:00:00.000Z"),
      },
      requestedShift: {
        newStartDate: new Date("2026-04-03T00:00:00.000Z"),
        newEndDate: new Date("2026-04-12T00:00:00.000Z"),
      },
      preview: { valid: true },
    })).toEqual({
      project: {
        id: "project_1",
        name: "Project One",
        shortCode: "PRJ",
        status: "ACTIVE",
        responsiblePerson: "Alice",
        startDate: "2026-04-01",
        endDate: "2026-04-10",
      },
      requestedShift: {
        newStartDate: "2026-04-03",
        newEndDate: "2026-04-12",
      },
      preview: { valid: true },
    });
  });
});