import path from "node:path";
import assert from "node:assert/strict";
import { describe, it } from "node:test";
import { migrate } from "drizzle-orm/better-sqlite3/migrator";
import { createDatabaseContext } from "../src/db/database-context.js";
import { ExternalModelStateRepository } from "../src/db/repositories/external-model-state.repository.js";
import { externalImportBatches } from "../src/db/schema/external-import-batches.js";
import { externalModelObjects } from "../src/db/schema/external-model-objects.js";
import { externalModelSources } from "../src/db/schema/external-model-sources.js";
import { externalRoomMappings } from "../src/db/schema/external-room-mappings.js";
import { projects } from "../src/db/schema/projects.js";
import { createExternalCsvPreview } from "../src/external-model/application/external-csv-preview.js";
import { parseExternalCsv } from "../src/external-model/csv/external-csv-transport.js";
import {
  createExternalRoomKey,
  indexExternalObjectsByIfcGuid,
  projectInitialExternalObject,
} from "../src/external-model/domain/external-model-matching.js";
import {
  externalCsvTestConfiguration,
  firstIfcGuid,
  quotedRevitCsv,
  utf8Bytes,
} from "./fixtures/revit-csv-fixtures.js";

function configuredCsv() {
  const configuration = structuredClone(externalCsvTestConfiguration);
  configuration.familyTypeRules.push({
    exactFamilyAndType: "Steckdose: Doppelsteckdose",
    internalDeviceType: "Steckdose",
    connectionKind: "socket",
    category: "single_phase",
    quantityRule: { kind: "mapped-column" },
    displayNameSuggestion: { kind: "selection-marker" },
  });
  return configuration;
}

describe("external model matching", () => {
  it("normalizes source rooms and rejects duplicate IFC identities", () => {
    assert.equal(createExternalRoomKey(" 01/101 ", "Technik"), "number:01/101");
    assert.equal(createExternalRoomKey("", " Büro  Nord "), "name:BÜRO  NORD");
    assert.equal(createExternalRoomKey(" ", " "), null);
    assert.throws(
      () => indexExternalObjectsByIfcGuid([{ ifcGuid: firstIfcGuid }, { ifcGuid: firstIfcGuid }]),
      /Duplicate IfcGUID/
    );
  });

  it("derives initial planning values from an exact family rule", () => {
    const configuration = configuredCsv();
    const preview = createExternalCsvPreview({
      fileName: "revit.csv",
      bytes: utf8Bytes(quotedRevitCsv, true),
      configuration,
    });
    const projected = projectInitialExternalObject(preview.objects[0], configuration);

    assert.deepEqual(projected.issues, []);
    assert.equal(projected.ifcGuid, firstIfcGuid);
    assert.equal(projected.planningValues.displayName, "Arbeitsplatz");
    assert.equal(projected.planningValues.category, "single_phase");
    assert.equal(projected.planningValues.effectiveQuantity, 2);
    assert.equal(projected.planningValues.powerPerUnitW, 120.5);
  });

  it("keeps unclassified or invalid values visible as issues", () => {
    const projected = projectInitialExternalObject(
      {
        rowNumber: 4,
        ifcGuid: firstIfcGuid,
        roomNumber: "",
        roomName: "",
        familyAndType: "Unbekannt",
        selectionMarker: "",
        circuitIdentifier: "",
        power: "12,3,4",
        quantity: "0",
        additionalSourceValues: {},
      },
      externalCsvTestConfiguration
    );

    assert.deepEqual(projected.issues, [
      "unknown-family-and-type",
      "missing-room",
      "invalid-power",
    ]);
    assert.equal(projected.planningValues.powerPerUnitW, null);
  });
});

describe("external model state repository", () => {
  it("reads a deterministic complete external state without changing project data", () => {
    const context = createDatabaseContext(":memory:");
    migrate(context.db, { migrationsFolder: path.resolve("src", "db", "migrations") });
    try {
      context.db.insert(projects).values({ id: "project-1", name: "Projekt" }).run();
      context.db.insert(externalModelSources).values({
        id: "source-1",
        projectId: "project-1",
        name: "Revit-Gesamtmodell",
        sourceType: "revit_csv",
      }).run();
      const configuration = configuredCsv();
      const bytes = utf8Bytes(quotedRevitCsv, true);
      const document = parseExternalCsv(bytes, configuration);
      context.db.insert(externalImportBatches).values({
        id: "batch-1",
        projectId: "project-1",
        sourceId: "source-1",
        importKind: "initial",
        importedAtIso: "2026-08-02T15:30:00.000Z",
        fileName: "revit.csv",
        sha256: "hash",
        appliedProjectRevision: 1,
        configurationSnapshot: configuration,
        originalBytes: Buffer.from(bytes),
        document,
      }).run();
      context.db.insert(externalRoomMappings).values({
        id: "mapping-1",
        projectId: "project-1",
        sourceId: "source-1",
        normalizedSourceRoomKey: "number:01/101",
        sourceFloorName: null,
        sourceRoomNumber: "01/101",
        sourceRoomName: "Technik",
        roomId: null,
        defaultDistributionBoardId: null,
      }).run();
      const preview = createExternalCsvPreview({
        fileName: "revit.csv",
        bytes,
        configuration,
      });
      const projected = projectInitialExternalObject(preview.objects[0], configuration);
      context.db.insert(externalModelObjects).values({
        id: "object-1",
        projectId: "project-1",
        sourceId: "source-1",
        ifcGuid: projected.ifcGuid,
        lastSeenImportBatchId: "batch-1",
        lastAcceptedImportBatchId: "batch-1",
        acceptedSourceValues: projected.sourceValues,
        planningValues: projected.planningValues,
        overriddenFields: [],
        externalRoomMappingId: "mapping-1",
        distributionBoardId: null,
        linkedProjectDeviceId: null,
        circuitDeviceRowId: null,
        presenceStatus: "present",
      }).run();

      const result = new ExternalModelStateRepository(context.db).getByProject("project-1");
      assert.equal(result.projectExists, true);
      assert.equal(result.state.source?.id, "source-1");
      assert.equal(result.state.importBatches[0].originalContentBase64, Buffer.from(bytes).toString("base64"));
      assert.equal(result.state.roomMappings[0].normalizedSourceRoomKey, "number:01/101");
      assert.equal(result.state.objects[0].ifcGuid, firstIfcGuid);
      assert.equal(result.state.objects[0].circuitDeviceRowId, null);
      assert.equal(result.state.objects[0].planningValues.effectiveQuantity, 2);

      assert.throws(
        () => context.db.insert(externalModelObjects).values({
          ...context.db.select().from(externalModelObjects).get()!,
          id: "object-2",
        }).run(),
        /UNIQUE constraint failed/
      );
    } finally {
      context.close();
    }
  });

  it("distinguishes an empty project from an unknown project", () => {
    const context = createDatabaseContext(":memory:");
    migrate(context.db, { migrationsFolder: path.resolve("src", "db", "migrations") });
    try {
      context.db.insert(projects).values({ id: "project-1", name: "Projekt" }).run();
      const repository = new ExternalModelStateRepository(context.db);
      assert.deepEqual(repository.getByProject("project-1"), {
        projectExists: true,
        state: { source: null, importBatches: [], roomMappings: [], objects: [] },
      });
      assert.equal(repository.getByProject("missing").projectExists, false);
    } finally {
      context.close();
    }
  });
});