'use client';

import { useState } from 'react';
import { Play, CheckCircle, XCircle, AlertTriangle, FileText, Clock, Code2, Bug, Loader2 } from 'lucide-react';
import { runCodeQualityCheck, type CodeQualityReport, type CodeQualityIssue } from '@/lib/api';
import { SidebarNav } from '@/components/sidebar-nav';

export default function CodeQualityPage() {
  const [projectPath, setProjectPath] = useState('');
  const [projectId, setProjectId] = useState('');
  const [selectedChecks, setSelectedChecks] = useState<Array<'typescript' | 'eslint' | 'build' | 'test'>>([
    'typescript',
    'eslint',
    'build',
    'test',
  ]);
  const [loading, setLoading] = useState(false);
  const [report, setReport] = useState<CodeQualityReport | null>(null);
  const [error, setError] = useState<string | null>(null);

  const handleRunCheck = async () => {
    if (!projectPath || !projectId) {
      setError('Please provide project ID and path');
      return;
    }

    setLoading(true);
    setError(null);
    setReport(null);

    try {
      const result = await runCodeQualityCheck({
        projectId,
        projectPath,
        checks: selectedChecks,
      });
      setReport(result);
    } catch (err) {
      setError('Failed to run code quality check');
      console.error(err);
    } finally {
      setLoading(false);
    }
  };

  const toggleCheck = (check: 'typescript' | 'eslint' | 'build' | 'test') => {
    setSelectedChecks(prev =>
      prev.includes(check) ? prev.filter(c => c !== check) : [...prev, check]
    );
  };

  const getIssueIcon = (type: string) => {
    switch (type) {
      case 'error':
        return <XCircle className="w-4 h-4 text-red-600" />;
      case 'warning':
        return <AlertTriangle className="w-4 h-4 text-yellow-600" />;
      case 'info':
        return <FileText className="w-4 h-4 text-blue-600" />;
      default:
        return null;
    }
  };

  const getCategoryIcon = (category: string) => {
    switch (category) {
      case 'typescript':
        return <Code2 className="w-4 h-4 text-blue-600" />;
      case 'eslint':
        return <FileText className="w-4 h-4 text-purple-600" />;
      case 'build':
        return <Play className="w-4 h-4 text-green-600" />;
      case 'test':
        return <Bug className="w-4 h-4 text-orange-600" />;
      default:
        return <FileText className="w-4 h-4 text-gray-600" />;
    }
  };

  return (
    <div className="flex min-h-screen bg-gray-50">
      <SidebarNav />

      <main className="flex-1 min-w-0 overflow-y-auto">
        <div className="p-8 max-md:p-4">
          <div className="mb-8">
        <h1 className="text-3xl font-bold text-gray-900 dark:text-white">Code Quality Analysis</h1>
        <p className="text-gray-600 dark:text-gray-400 mt-2">
          Run TypeScript, ESLint, build, and test checks on your projects
        </p>
      </div>

      {/* Configuration */}
      <div className="bg-white dark:bg-gray-800 rounded-lg shadow p-6 mb-8">
        <h2 className="text-xl font-semibold text-gray-900 dark:text-white mb-4">Configuration</h2>
        <div className="grid grid-cols-1 md:grid-cols-2 gap-4 mb-4">
          <div>
            <label className="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-1">
              Project ID
            </label>
            <input
              type="text"
              value={projectId}
              onChange={(e) => setProjectId(e.target.value)}
              className="w-full px-3 py-2 border border-gray-300 dark:border-gray-600 rounded-md bg-white dark:bg-gray-700 text-gray-900 dark:text-white"
              placeholder="e.g., trading-service"
            />
          </div>
          <div>
            <label className="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-1">
              Project Path
            </label>
            <input
              type="text"
              value={projectPath}
              onChange={(e) => setProjectPath(e.target.value)}
              className="w-full px-3 py-2 border border-gray-300 dark:border-gray-600 rounded-md bg-white dark:bg-gray-700 text-gray-900 dark:text-white"
              placeholder="e.g., /opt/bytelyst/learning_ai_invt_trdg"
            />
          </div>
        </div>

        <div className="mb-4">
          <label className="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-2">
            Checks to Run
          </label>
          <div className="flex flex-wrap gap-2">
            {(['typescript', 'eslint', 'build', 'test'] as const).map((check) => (
              <button
                key={check}
                onClick={() => toggleCheck(check)}
                className={`px-4 py-2 rounded-md text-sm font-medium transition-colors ${
                  selectedChecks.includes(check)
                    ? 'bg-blue-600 text-white'
                    : 'bg-gray-100 dark:bg-gray-700 text-gray-700 dark:text-gray-300'
                }`}
              >
                {check.charAt(0).toUpperCase() + check.slice(1)}
              </button>
            ))}
          </div>
        </div>

        <button
          onClick={handleRunCheck}
          disabled={loading || selectedChecks.length === 0}
          className="flex items-center gap-2 px-6 py-2 bg-blue-600 text-white rounded-md hover:bg-blue-700 disabled:bg-gray-300 disabled:cursor-not-allowed"
        >
          {loading ? (
            <>
              <Loader2 className="w-4 h-4 animate-spin" />
              Running Checks...
            </>
          ) : (
            <>
              <Play className="w-4 h-4" />
              Run Analysis
            </>
          )}
        </button>
      </div>

      {error && (
        <div className="bg-red-50 dark:bg-red-900/20 border border-red-200 dark:border-red-800 text-red-700 dark:text-red-300 px-4 py-3 rounded-lg mb-6">
          {error}
        </div>
      )}

      {/* Results */}
      {report && (
        <div className="space-y-6">
          {/* Summary */}
          <div className="bg-white dark:bg-gray-800 rounded-lg shadow p-6">
            <h2 className="text-xl font-semibold text-gray-900 dark:text-white mb-4">Summary</h2>
            <div className="grid grid-cols-1 md:grid-cols-4 gap-4">
              <div className="bg-blue-50 dark:bg-blue-900/20 p-4 rounded-lg">
                <div className="text-3xl font-bold text-blue-600 dark:text-blue-400">
                  {report.summary.totalIssues}
                </div>
                <div className="text-sm text-gray-600 dark:text-gray-400">Total Issues</div>
              </div>
              <div className="bg-red-50 dark:bg-red-900/20 p-4 rounded-lg">
                <div className="text-3xl font-bold text-red-600 dark:text-red-400">
                  {report.summary.errors}
                </div>
                <div className="text-sm text-gray-600 dark:text-gray-400">Errors</div>
              </div>
              <div className="bg-yellow-50 dark:bg-yellow-900/20 p-4 rounded-lg">
                <div className="text-3xl font-bold text-yellow-600 dark:text-yellow-400">
                  {report.summary.warnings}
                </div>
                <div className="text-sm text-gray-600 dark:text-gray-400">Warnings</div>
              </div>
              <div className="bg-green-50 dark:bg-green-900/20 p-4 rounded-lg">
                <div className="text-3xl font-bold text-green-600 dark:text-green-400">
                  {report.categories.test.passed}
                </div>
                <div className="text-sm text-gray-600 dark:text-gray-400">Tests Passed</div>
              </div>
            </div>
          </div>

          {/* Categories */}
          <div className="grid grid-cols-1 md:grid-cols-2 gap-6">
            <div className="bg-white dark:bg-gray-800 rounded-lg shadow p-6">
              <div className="flex items-center gap-2 mb-4">
                <Code2 className="w-5 h-5 text-blue-600" />
                <h3 className="text-lg font-semibold text-gray-900 dark:text-white">TypeScript</h3>
              </div>
              <div className="space-y-2">
                <div className="flex justify-between">
                  <span className="text-gray-600 dark:text-gray-400">Errors:</span>
                  <span className="font-medium text-red-600">{report.categories.typescript.errors}</span>
                </div>
                <div className="flex justify-between">
                  <span className="text-gray-600 dark:text-gray-400">Warnings:</span>
                  <span className="font-medium text-yellow-600">{report.categories.typescript.warnings}</span>
                </div>
                <div className="flex justify-between">
                  <span className="text-gray-600 dark:text-gray-400">Duration:</span>
                  <span className="font-medium text-gray-900 dark:text-white">
                    {report.categories.typescript.duration}ms
                  </span>
                </div>
              </div>
            </div>

            <div className="bg-white dark:bg-gray-800 rounded-lg shadow p-6">
              <div className="flex items-center gap-2 mb-4">
                <FileText className="w-5 h-5 text-purple-600" />
                <h3 className="text-lg font-semibold text-gray-900 dark:text-white">ESLint</h3>
              </div>
              <div className="space-y-2">
                <div className="flex justify-between">
                  <span className="text-gray-600 dark:text-gray-400">Errors:</span>
                  <span className="font-medium text-red-600">{report.categories.eslint.errors}</span>
                </div>
                <div className="flex justify-between">
                  <span className="text-gray-600 dark:text-gray-400">Warnings:</span>
                  <span className="font-medium text-yellow-600">{report.categories.eslint.warnings}</span>
                </div>
                <div className="flex justify-between">
                  <span className="text-gray-600 dark:text-gray-400">Duration:</span>
                  <span className="font-medium text-gray-900 dark:text-white">
                    {report.categories.eslint.duration}ms
                  </span>
                </div>
              </div>
            </div>

            <div className="bg-white dark:bg-gray-800 rounded-lg shadow p-6">
              <div className="flex items-center gap-2 mb-4">
                <Play className="w-5 h-5 text-green-600" />
                <h3 className="text-lg font-semibold text-gray-900 dark:text-white">Build</h3>
              </div>
              <div className="space-y-2">
                <div className="flex justify-between">
                  <span className="text-gray-600 dark:text-gray-400">Status:</span>
                  <span className={`font-medium ${report.categories.build.success ? 'text-green-600' : 'text-red-600'}`}>
                    {report.categories.build.success ? 'Success' : 'Failed'}
                  </span>
                </div>
                <div className="flex justify-between">
                  <span className="text-gray-600 dark:text-gray-400">Errors:</span>
                  <span className="font-medium text-red-600">{report.categories.build.errors}</span>
                </div>
                <div className="flex justify-between">
                  <span className="text-gray-600 dark:text-gray-400">Duration:</span>
                  <span className="font-medium text-gray-900 dark:text-white">
                    {report.categories.build.duration}ms
                  </span>
                </div>
              </div>
            </div>

            <div className="bg-white dark:bg-gray-800 rounded-lg shadow p-6">
              <div className="flex items-center gap-2 mb-4">
                <Bug className="w-5 h-5 text-orange-600" />
                <h3 className="text-lg font-semibold text-gray-900 dark:text-white">Tests</h3>
              </div>
              <div className="space-y-2">
                <div className="flex justify-between">
                  <span className="text-gray-600 dark:text-gray-400">Status:</span>
                  <span className={`font-medium ${report.categories.test.success ? 'text-green-600' : 'text-red-600'}`}>
                    {report.categories.test.success ? 'Success' : 'Failed'}
                  </span>
                </div>
                <div className="flex justify-between">
                  <span className="text-gray-600 dark:text-gray-400">Passed:</span>
                  <span className="font-medium text-green-600">{report.categories.test.passed}</span>
                </div>
                <div className="flex justify-between">
                  <span className="text-gray-600 dark:text-gray-400">Failed:</span>
                  <span className="font-medium text-red-600">{report.categories.test.failed}</span>
                </div>
              </div>
            </div>
          </div>

          {/* Issues List */}
          <div className="bg-white dark:bg-gray-800 rounded-lg shadow p-6">
            <h2 className="text-xl font-semibold text-gray-900 dark:text-white mb-4">Issues</h2>
            {report.issues.length === 0 ? (
              <div className="text-center py-8 text-gray-500 dark:text-gray-400">
                <CheckCircle className="w-12 h-12 mx-auto mb-3 text-green-600" />
                <p>No issues found!</p>
              </div>
            ) : (
              <div className="space-y-3">
                {report.issues.map((issue) => (
                  <div
                    key={issue.id}
                    className="flex items-start gap-3 p-3 bg-gray-50 dark:bg-gray-700 rounded-lg"
                  >
                    <div className="mt-0.5">{getIssueIcon(issue.type)}</div>
                    <div className="flex-1">
                      <div className="flex items-center gap-2 mb-1">
                        <span className="font-medium text-gray-900 dark:text-white">{issue.file}</span>
                        {issue.line && (
                          <span className="text-sm text-gray-500 dark:text-gray-400">
                            :{issue.line}
                            {issue.column && `:${issue.column}`}
                          </span>
                        )}
                        <div className="ml-auto">{getCategoryIcon(issue.category)}</div>
                      </div>
                      <p className="text-sm text-gray-700 dark:text-gray-300">{issue.message}</p>
                      {issue.rule && (
                        <p className="text-xs text-gray-500 dark:text-gray-400 mt-1">Rule: {issue.rule}</p>
                      )}
                    </div>
                  </div>
                ))}
              </div>
            )}
          </div>
        </div>
      )}
        </div>
      </main>
    </div>
  );
}