import assert from "node:assert/strict";
import { describe, it } from "node:test";
import {
  buildCircuitSectionRenumberAssignments,
} from "../src/frontend/utils/circuit-section-renumber-command.js";
import {
  renumberCircuitSectionCommand,
} from "../src/frontend/utils/api.js";
import type {
  CircuitTreeCircuitDto,
  CircuitTreeSectionDto,
} from "../src/frontend/types.js";

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

function section(
  id: string,
  prefix: string,
  circuits: CircuitTreeCircuitDto[]
): CircuitTreeSectionDto {
  return {
    id,
    key: id,
    displayName: id,
    prefix,
    sortOrder: 10,
    circuits: circuits.map((entry) => ({
      ...entry,
      sectionId: id,
    })),
  };
}

describe("circuit section renumber command adapters", () => {
  it("plans sequential identifiers and skips conflicts outside the section", () => {
    const sections = [
      section("target", "-1F", [
        circuit("circuit-1", "-1F7", 10),
        circuit("circuit-2", "-1F9", 20),
        circuit("circuit-3", "-1F11", 30),
      ]),
      section("other", "-2F", [
        circuit("circuit-other", "-1F2", 10),
      ]),
    ];

    assert.deepEqual(
      buildCircuitSectionRenumberAssignments(sections, "target"),
      [
        {
          circuitId: "circuit-1",
          expectedEquipmentIdentifier: "-1F7",
          targetEquipmentIdentifier: "-1F1",
        },
        {
          circuitId: "circuit-2",
          expectedEquipmentIdentifier: "-1F9",
          targetEquipmentIdentifier: "-1F3",
        },
        {
          circuitId: "circuit-3",
          expectedEquipmentIdentifier: "-1F11",
          targetEquipmentIdentifier: "-1F4",
        },
      ]
    );
  });

  it("omits an already canonical section and rejects an unknown section", () => {
    const sections = [
      section("target", "-2F", [
        circuit("circuit-1", "-2F1", 10),
        circuit("circuit-2", "-2F2", 20),
      ]),
    ];
    assert.deepEqual(
      buildCircuitSectionRenumberAssignments(sections, "target"),
      []
    );
    assert.throws(
      () =>
        buildCircuitSectionRenumberAssignments(
          sections,
          "missing"
        ),
      /nicht gefunden/
    );
  });

  it("sends the complete assignment set through project history", async () => {
    let requestBody: Record<string, unknown> | null = null;
    const originalFetch = globalThis.fetch;
    globalThis.fetch = async (_input, init) => {
      requestBody = 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: 1,
            createdAtIso: "2026-07-25T00:00:00.000Z",
          },
          history: {
            projectId: "project-1",
            currentRevision: 1,
            undoDepth: 1,
            redoDepth: 0,
            undoChangeSetId: "change-1",
            redoChangeSetId: null,
          },
        }),
        { status: 200, headers: { "Content-Type": "application/json" } }
      );
    };

    const assignments = [
      {
        circuitId: "circuit-1",
        expectedEquipmentIdentifier: "-2F9",
        targetEquipmentIdentifier: "-2F1",
      },
    ];
    try {
      await renumberCircuitSectionCommand(
        "project-1",
        0,
        "section-1",
        assignments,
        "renumber"
      );
    } finally {
      globalThis.fetch = originalFetch;
    }

    assert.deepEqual(requestBody, {
      expectedRevision: 0,
      description: "renumber",
      command: {
        schemaVersion: 1,
        type: "circuit.renumber-section",
        payload: {
          sectionId: "section-1",
          assignments,
        },
      },
    });
  });
});