import assert from "node:assert/strict";
import { describe, it } from "node:test";
import {
  deserializeProjectCommand,
  serializeProjectCommand,
  type SerializedProjectCommand,
} from "../src/domain/models/project-command.model.js";
import {
  assertCircuitUpdateProjectCommand,
  createCircuitUpdateProjectCommand,
} from "../src/domain/models/circuit-project-command.model.js";
import {
  assertCircuitDeviceRowUpdateProjectCommand,
  createCircuitDeviceRowUpdateProjectCommand,
} from "../src/domain/models/circuit-device-row-project-command.model.js";

describe("serialized project commands", () => {
  it("round-trips a versioned command envelope", () => {
    const command: SerializedProjectCommand = {
      schemaVersion: 1,
      type: "circuit.update",
      payload: {
        circuitId: "circuit-1",
        changes: {
          displayName: "Werkstatt",
          protectionRatedCurrent: 16,
          isReserve: false,
          remark: null,
        },
      },
    };

    assert.deepEqual(
      deserializeProjectCommand(serializeProjectCommand(command)),
      command
    );
  });

  it("rejects values that JSON would lose or silently change", () => {
    const invalidPayloads: unknown[] = [
      { value: undefined },
      { value: Number.NaN },
      { value: Number.POSITIVE_INFINITY },
      { value: new Date() },
    ];

    for (const payload of invalidPayloads) {
      assert.throws(() =>
        serializeProjectCommand({
          schemaVersion: 1,
          type: "test.invalid",
          payload: payload as never,
        })
      );
    }
  });

  it("rejects cyclic payloads before persistence", () => {
    const payload: Record<string, unknown> = {};
    payload.self = payload;

    assert.throws(
      () =>
        serializeProjectCommand({
          schemaVersion: 1,
          type: "test.cyclic",
          payload: payload as never,
        }),
      /must not contain cycles/
    );
  });

  it("rejects malformed serialized envelopes", () => {
    assert.throws(
      () =>
        deserializeProjectCommand(
          JSON.stringify({ schemaVersion: 0, type: "", payload: null })
        ),
      /schema version/
    );
  });
});

describe("circuit update project commands", () => {
  it("creates a typed command with explicit null clearing semantics", () => {
    const command = createCircuitUpdateProjectCommand("circuit-1", {
      displayName: null,
      cableLength: 12.5,
      isReserve: false,
    });

    assert.doesNotThrow(() => assertCircuitUpdateProjectCommand(command));
    assert.deepEqual(command.payload.changes, [
      { field: "displayName", value: null },
      { field: "cableLength", value: 12.5 },
      { field: "isReserve", value: false },
    ]);
  });

  it("rejects empty, duplicate and invalid field changes", () => {
    assert.throws(
      () => createCircuitUpdateProjectCommand("circuit-1", {}),
      /at least one change/
    );
    assert.throws(
      () =>
        assertCircuitUpdateProjectCommand({
          schemaVersion: 1,
          type: "circuit.update",
          payload: {
            circuitId: "circuit-1",
            changes: [
              { field: "displayName", value: "A" },
              { field: "displayName", value: "B" },
            ],
          },
        }),
      /duplicate field/
    );
    assert.throws(
      () =>
        createCircuitUpdateProjectCommand("circuit-1", {
          voltage: 0,
        }),
      /outside its allowed range/
    );
  });
});

describe("circuit device-row update project commands", () => {
  it("creates typed nullable device-row changes", () => {
    const command = createCircuitDeviceRowUpdateProjectCommand("row-1", {
      roomId: null,
      quantity: 2,
      cosPhi: 0.9,
    });

    assert.doesNotThrow(() =>
      assertCircuitDeviceRowUpdateProjectCommand(command)
    );
    assert.deepEqual(command.payload.changes, [
      { field: "roomId", value: null },
      { field: "quantity", value: 2 },
      { field: "cosPhi", value: 0.9 },
    ]);
  });

  it("rejects invalid device-row values", () => {
    assert.throws(
      () => createCircuitDeviceRowUpdateProjectCommand("row-1", {}),
      /at least one change/
    );
    assert.throws(
      () =>
        createCircuitDeviceRowUpdateProjectCommand("row-1", {
          displayName: "",
        }),
      /non-empty string/
    );
    assert.throws(
      () =>
        createCircuitDeviceRowUpdateProjectCommand("row-1", {
          quantity: -1,
        }),
      /non-negative/
    );
  });
});