import assert from "node:assert/strict";
import { describe, it } from "node:test";
import {
  createCircuitSectionsReorderProjectCommand,
} from "../src/domain/models/circuit-sections-reorder-project-command.model.js";
import {
  buildCircuitSectionReorderAssignments,
} from "../src/frontend/utils/circuit-section-reorder-command.js";
import {
  reorderCircuitSectionCommand,
  reorderCircuitSectionsCommand,
} from "../src/frontend/utils/api.js";
import type { CircuitTreeCircuitDto } from "../src/frontend/types.js";

function circuit(
  id: string,
  sortOrder: number
): CircuitTreeCircuitDto {
  return {
    id,
    circuitListId: "list-1",
    sectionId: "section-1",
    equipmentIdentifier: id,
    sortOrder,
    isReserve: true,
    circuitTotalPower: 0,
    deviceRows: [],
  };
}

describe("circuit section reorder command adapters", () => {
  it("builds complete exact assignments for a requested order", () => {
    const circuits = [
      circuit("circuit-1", 10),
      circuit("circuit-2", 20),
      circuit("circuit-3", 30),
    ];

    assert.deepEqual(
      buildCircuitSectionReorderAssignments(circuits, [
        "circuit-3",
        "circuit-1",
        "circuit-2",
      ]),
      [
        {
          circuitId: "circuit-3",
          expectedSortOrder: 30,
          targetSortOrder: 10,
        },
        {
          circuitId: "circuit-1",
          expectedSortOrder: 10,
          targetSortOrder: 20,
        },
        {
          circuitId: "circuit-2",
          expectedSortOrder: 20,
          targetSortOrder: 30,
        },
      ]
    );
  });

  it("omits unchanged orders and rejects incomplete orders", () => {
    const circuits = [
      circuit("circuit-1", 10),
      circuit("circuit-2", 20),
    ];
    assert.deepEqual(
      buildCircuitSectionReorderAssignments(circuits, [
        "circuit-1",
        "circuit-2",
      ]),
      []
    );
    assert.throws(
      () =>
        buildCircuitSectionReorderAssignments(circuits, [
          "circuit-1",
        ]),
      /jeden Stromkreis/
    );
  });

  it("validates atomic multi-section reorder envelopes", () => {
    const assignments = [
      {
        circuitId: "circuit-1",
        expectedSortOrder: 10,
        targetSortOrder: 20,
      },
      {
        circuitId: "circuit-2",
        expectedSortOrder: 20,
        targetSortOrder: 10,
      },
    ];
    const command = createCircuitSectionsReorderProjectCommand([
      { sectionId: "section-1", assignments },
      {
        sectionId: "section-2",
        assignments: assignments.map((assignment) => ({
          ...assignment,
          circuitId: `${assignment.circuitId}-other`,
        })),
      },
    ]);
    assert.equal(command.type, "circuit.reorder-sections");
    assert.throws(
      () =>
        createCircuitSectionsReorderProjectCommand([
          { sectionId: "section-1", assignments },
          { sectionId: "section-1", assignments },
        ]),
      /duplicate section ids/
    );
  });

  it("sends single and multi-section commands through project history", async () => {
    const requests: Array<Record<string, unknown>> = [];
    const originalFetch = globalThis.fetch;
    globalThis.fetch = async (_input, init) => {
      requests.push(
        JSON.parse(String(init?.body)) as Record<string, unknown>
      );
      return new Response(
        JSON.stringify({
          revision: {
            revisionId: "revision-1",
            changeSetId: "change-1",
            projectId: "project-1",
            revisionNumber: requests.length,
            createdAtIso: "2026-07-25T00:00:00.000Z",
          },
          history: {
            projectId: "project-1",
            currentRevision: requests.length,
            undoDepth: requests.length,
            redoDepth: 0,
            undoChangeSetId: "change-1",
            redoChangeSetId: null,
          },
        }),
        { status: 200, headers: { "Content-Type": "application/json" } }
      );
    };

    const assignments = [
      {
        circuitId: "circuit-1",
        expectedSortOrder: 10,
        targetSortOrder: 20,
      },
      {
        circuitId: "circuit-2",
        expectedSortOrder: 20,
        targetSortOrder: 10,
      },
    ];
    try {
      await reorderCircuitSectionCommand(
        "project-1",
        0,
        "section-1",
        assignments,
        "single"
      );
      await reorderCircuitSectionsCommand(
        "project-1",
        1,
        [{ sectionId: "section-1", assignments }],
        "multiple"
      );
    } finally {
      globalThis.fetch = originalFetch;
    }

    assert.deepEqual(
      requests.map((request) => {
        const command = request.command as { type: string };
        return [request.expectedRevision, command.type];
      }),
      [
        [0, "circuit.reorder-section"],
        [1, "circuit.reorder-sections"],
      ]
    );
  });
});