import React, { useState, useEffect } from "react";
import "./App.css";
import Step1 from "./components/Step1";
import Step2 from "./components/Step2";
import Step3 from "./components/Step3";
import Step4 from "./components/Step4";
import { config as appConfig, debugLog } from "./utils/config";
import { ApiService } from "./utils/apiService";

// Make ApiService available globally for debugging
if (process.env.NODE_ENV === "development") {
  window.ApiService = ApiService;
}

function App() {
  const [apiKey, setApiKey] = useState("");
  const [isApiKeyValid, setIsApiKeyValid] = useState(false); // Explicitly initialized to false

  const [uploadedFile, setUploadedFile] = useState(null);
  const [s3Link, setS3Link] = useState("");
  const [fileMetadata, setFileMetadata] = useState({
    fileSizeBytes: 0,
    sourceFileRows: 0,
  });
  const [config, setConfig] = useState({
    numRows: appConfig.defaultNumRecords,
    targetColumn: "",
  });
  const [generatedDataLink, setGeneratedDataLink] = useState("");

  // Check for previously stored and valid API key on app load
  useEffect(() => {
    const checkStoredApiKey = async () => {
      try {
        debugLog("Checking for stored API key on app initialization");
        const storedKeyStatus = await ApiService.verifyStoredApiKey();
        if (storedKeyStatus.valid) {
          setIsApiKeyValid(true);
          debugLog("Valid stored API key found", storedKeyStatus);
        } else {
          setIsApiKeyValid(false);
          debugLog("No valid stored API key", storedKeyStatus);
        }
      } catch (error) {
        debugLog("Error checking stored API key", error);
        setIsApiKeyValid(false);
      }
    };

    checkStoredApiKey();
  }, []);

  // Log app initialization in debug mode
  useEffect(() => {
    debugLog("Syncora app initialized", {
      defaultNumRecords: appConfig.defaultNumRecords,
      maxFileSizeMB: appConfig.maxFileSizeMB,
      apiBaseUrl: appConfig.apiBaseUrl,
    });
  }, []);

  const steps = [
    { number: 1, title: "API Key Validation", component: Step1, icon: "🔑" },
    { number: 2, title: "Upload Files", component: Step2, icon: "📁" },
    { number: 3, title: "Configuration", component: Step3, icon: "⚙️" },
    { number: 4, title: "Generate Data", component: Step4, icon: "🚀" },
  ];

  // Helper function to check if a step should be enabled
  const isStepEnabled = (stepNumber) => {
    switch (stepNumber) {
      case 1:
        return true; // Step 1 is always enabled
      case 2:
        const step2Enabled = isApiKeyValid;
        debugLog(`Step 2 enabled check: ${step2Enabled}`, {
          isApiKeyValid,
          apiKeyLength: apiKey.length,
          hasApiKey: !!apiKey,
        });
        return step2Enabled; // Step 2 enabled when API key is valid
      case 3:
        return isApiKeyValid && uploadedFile && s3Link; // Step 3 enabled when file is uploaded
      case 4:
        return isApiKeyValid && uploadedFile && s3Link && config.targetColumn; // Step 4 enabled when config is complete
      default:
        return false;
    }
  };

  const renderStep = (stepNumber) => {
    const step = steps[stepNumber - 1];
    const StepComponent = step.component;
    const enabled = isStepEnabled(stepNumber);

    return (
      <div className={`step-wrapper ${enabled ? "enabled" : "disabled"}`}>
        <StepComponent
          apiKey={apiKey}
          setApiKey={setApiKey}
          isApiKeyValid={isApiKeyValid}
          setIsApiKeyValid={setIsApiKeyValid}
          uploadedFile={uploadedFile}
          setUploadedFile={setUploadedFile}
          s3Link={s3Link}
          setS3Link={setS3Link}
          fileMetadata={fileMetadata}
          setFileMetadata={setFileMetadata}
          config={config}
          setConfig={setConfig}
          generatedDataLink={generatedDataLink}
          setGeneratedDataLink={setGeneratedDataLink}
          stepNumber={stepNumber}
          stepTitle={step.title}
          stepIcon={step.icon}
          enabled={enabled}
        />
      </div>
    );
  };

  return (
    <div className="App">
      <header className="app-header">
        <div className="header-content">
          <div>
            <h1>Syncora</h1>
            <p>AI-Powered Data Generation Platform</p>
          </div>
          <div className="progress-indicator">
            {steps.map((step, index) => {
              const stepNumber = step.number;
              const isEnabled = isStepEnabled(stepNumber);
              const isCompleted =
                stepNumber < steps.length
                  ? isStepEnabled(stepNumber + 1)
                  : stepNumber === 4 && generatedDataLink;

              return (
                <div
                  key={step.number}
                  className={`progress-step ${
                    isCompleted
                      ? "completed"
                      : isEnabled
                      ? "active"
                      : "disabled"
                  }`}
                  title={`Step ${step.number}: ${step.title}`}
                />
              );
            })}
          </div>
        </div>
      </header>

      <div className="main-container">
        {/* Left Column */}
        <div className="steps-column">
          {/* Step 1 */}
          <div className="step-content">{renderStep(1)}</div>

          {/* Step 2 */}
          <div className="step-content">{renderStep(2)}</div>
        </div>

        {/* Right Column */}
        <div className="steps-column">
          {/* Step 3 */}
          <div className="step-content">{renderStep(3)}</div>

          {/* Step 4 */}
          <div className="step-content">{renderStep(4)}</div>
        </div>
      </div>

      {/* Floating Help Button */}
      <button
        className="floating-help"
        onClick={() => window.open("https://docs.syncora.ai/help", "_blank")}
        title="Get Help"
      >
        ?
      </button>
    </div>
  );
}

export default App;