Export reporters (#325)

* fix: change file path used by file report

* refactor: extract cli runner

* chore: change imports

* chore: review fixes

* chore: fix imports

* refactor: export reporters factory from lint analyzer

Author: incendial

example/example.dart

@@ -3,7 +3,6 @@ import 'dart:io';
 
 import 'package:dart_code_metrics/config.dart';
 import 'package:dart_code_metrics/metrics_analyzer.dart';
-import 'package:dart_code_metrics/reporters.dart';
 
 Future<void> main() async {
   // Get some folder you would like to analyze

lib/metrics.dart

@@ -1 +1,7 @@
 export 'package:dart_code_metrics/src/analyzers/lint_analyzer/lint_analyzer.dart';
+
+export 'package:dart_code_metrics/src/analyzers/lint_analyzer/reporters/reporters_list/console/lint_console_reporter.dart';
+export 'package:dart_code_metrics/src/analyzers/lint_analyzer/reporters/reporters_list/json/lint_json_reporter.dart';
+
+export 'package:dart_code_metrics/src/analyzers/lint_analyzer/metrics/metrics_factory.dart';
+export 'package:dart_code_metrics/src/analyzers/lint_analyzer/metrics/models/metric_value_level.dart';

lib/metrics_analyzer.dart

@@ -1,2 +1,2 @@
-export 'package:dart_code_metrics/src/analyzers/lint_analyzer/reporters/reporter_factory.dart';
-export 'package:dart_code_metrics/src/analyzers/lint_analyzer/reporters/reporters_list/console/lint_console_reporter.dart';
+export 'package:dart_code_metrics/src/reporters/models/reporter.dart';
+export 'package:dart_code_metrics/src/analyzers/models/file_report.dart';

lib/reporters.dart

@@ -9,6 +9,8 @@ import 'package:file/local.dart';
 import 'package:glob/glob.dart';
 import 'package:path/path.dart';
 
+import '../../config_builder/models/config.dart';
+import '../../reporters/models/reporter.dart';
 import '../../utils/exclude_utils.dart';
 import '../../utils/node_utils.dart';
 import '../models/entity_type.dart';
@@ -29,11 +31,25 @@ import 'metrics/models/metric_documentation.dart';
 import 'metrics/models/metric_value.dart';
 import 'metrics/models/metric_value_level.dart';
 import 'metrics/scope_visitor.dart';
+import 'reporters/reporter_factory.dart';
 import 'reporters/utility_selector.dart';
 
 class LintAnalyzer {
   const LintAnalyzer();
 
+  Reporter? getReporter({
+    required Config config,
+    required String name,
+    required IOSink output,
+    required String reportFolder,
+  }) =>
+      reporter(
+        config: config,
+        name: name,
+        output: output,
+        reportFolder: reportFolder,
+      );
+
   FileReport? runPluginAnalysis(
     ResolvedUnitResult result,
     LintConfig config,

lib/src/analyzers/lint_analyzer/lint_analyzer.dart

@@ -1,13 +1,14 @@
 import 'dart:io';
 
 import '../analyzers/lint_analyzer/lint_analyzer.dart';
-import '../analyzers/lint_analyzer/reporters/reporter_factory.dart';
 import '../analyzers/lint_analyzer/reporters/utility_selector.dart';
 import '../config_builder/config_builder.dart';
 import '../config_builder/models/analysis_options.dart';
 import 'arguments_builder/arguments_builder.dart';
 
 class CliRunner {
+  static const _analyzer = LintAnalyzer();
+
   static Future<void> runAnalysis(List<String> args) async {
     final parsedArgs = ArgumentsBuilder.getArguments(args);
 
@@ -17,18 +18,20 @@ class CliRunner {
       final lintConfig =
           ConfigBuilder.getLintConfig(config, parsedArgs.rootFolder);
 
-      final lintAnalyserResult = await const LintAnalyzer().runCliAnalysis(
+      final lintAnalyserResult = await _analyzer.runCliAnalysis(
         parsedArgs.folders,
         parsedArgs.rootFolder,
         lintConfig,
       );
 
-      await reporter(
-        name: parsedArgs.reporterName,
-        output: stdout,
-        config: config,
-        reportFolder: parsedArgs.reportFolder,
-      )?.report(lintAnalyserResult);
+      await _analyzer
+          .getReporter(
+            name: parsedArgs.reporterName,
+            output: stdout,
+            config: config,
+            reportFolder: parsedArgs.reportFolder,
+          )
+          ?.report(lintAnalyserResult);
 
       if (parsedArgs.maximumAllowedLevel != null &&
           UtilitySelector.maxViolationLevel(lintAnalyserResult) >=