> ## Documentation Index
> Fetch the complete documentation index at: https://developer.box.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Scaffold application code

export const ProgressBar = ({pages = [], ...props}) => {
  const [currentStep, setCurrentStep] = useState(0);
  const [isDarkMode, setIsDarkMode] = useState(false);
  useEffect(() => {
    const checkDarkMode = () => {
      const isDark = document.documentElement.classList.contains('dark');
      console.log('ProgressBar - isDarkMode:', isDark);
      setIsDarkMode(isDark);
    };
    checkDarkMode();
    const observer = new MutationObserver(() => {
      checkDarkMode();
    });
    observer.observe(document.documentElement, {
      attributes: true,
      attributeFilter: ['class']
    });
    return () => {
      observer.disconnect();
    };
  }, []);
  useEffect(() => {
    if (pages.length > 0) {
      const currentPath = window.location.pathname;
      const stepIndex = pages.findIndex(page => {
        const pagePath = page.startsWith('/') ? page : `/${page}`;
        return currentPath.endsWith(pagePath) || currentPath.includes(pagePath);
      });
      if (stepIndex !== -1) {
        setCurrentStep(stepIndex + 1);
      }
    }
  }, [pages]);
  if (!pages || pages.length === 0) {
    return null;
  }
  const step = currentStep;
  const total = pages.length;
  console.log('ProgressBar - Rendering with isDarkMode:', isDarkMode);
  const progressBarContainerStyle = {
    width: '100%',
    marginBottom: '32px',
    display: 'flex',
    alignItems: 'center',
    gap: '16px'
  };
  const stepsContainerStyle = {
    display: 'flex',
    alignItems: 'center',
    gap: '8px',
    flexShrink: 0
  };
  const progressBarTrackStyle = {
    flex: 1,
    height: '22px',
    backgroundColor: 'rgba(169, 210, 244, 0.06)',
    border: isDarkMode ? '1px solid rgba(230, 241, 247, 0.67)' : '1px solid #e3ecf3',
    borderRadius: '4px',
    overflow: 'hidden',
    position: 'relative'
  };
  const progressBarFillStyle = {
    height: '100%',
    backgroundColor: 'rgba(113, 192, 248, 0.23)',
    width: `${step / total * 100}%`,
    transition: 'width 0.3s ease'
  };
  const getStepStyle = (stepNumber, isActive) => {
    if (isDarkMode) {
      return {
        width: '22px',
        height: '22px',
        borderRadius: '4px',
        display: 'flex',
        alignItems: 'center',
        justifyContent: 'center',
        fontSize: '12px',
        fontWeight: '600',
        position: 'relative',
        zIndex: 1,
        transition: 'all 0.3s ease',
        backgroundColor: isActive ? 'rgba(113, 192, 248, 0.23)' : 'transparent',
        color: isActive ? '#60a5fa' : '#a0aec0',
        border: isActive ? '1px solid #e3ecf3' : '1px solid #e0e6eb',
        cursor: 'pointer',
        textDecoration: 'none'
      };
    }
    if (isActive) {
      return {
        width: '22px',
        height: '22px',
        borderRadius: '4px',
        display: 'flex',
        alignItems: 'center',
        justifyContent: 'center',
        fontSize: '12px',
        fontWeight: '600',
        position: 'relative',
        zIndex: 1,
        transition: 'all 0.3s ease',
        backgroundColor: 'rgba(169, 210, 244, 0.32)',
        color: '#374151',
        border: '1px solid #e1eef8',
        cursor: 'pointer',
        textDecoration: 'none'
      };
    }
    return {
      width: '22px',
      height: '22px',
      borderRadius: '4px',
      display: 'flex',
      alignItems: 'center',
      justifyContent: 'center',
      fontSize: '12px',
      fontWeight: '600',
      position: 'relative',
      zIndex: 1,
      transition: 'all 0.3s ease',
      backgroundColor: '#fbfbfb',
      color: '#9ca3af',
      border: '1px solid #e3ecf3',
      cursor: 'pointer',
      textDecoration: 'none'
    };
  };
  return <div style={progressBarContainerStyle} {...props}>
      <div style={stepsContainerStyle}>
        {Array.from({
    length: total
  }, (_, index) => {
    const stepNumber = index + 1;
    const pageIndex = index;
    const pagePath = pages[pageIndex];
    const fullPath = pagePath.startsWith('/') ? pagePath : `/${pagePath}`;
    const isActive = stepNumber === step;
    return <a key={stepNumber} href={fullPath} style={getStepStyle(stepNumber, isActive)}>
              {stepNumber}
            </a>;
  })}
      </div>
      <div style={progressBarTrackStyle}>
        <div style={progressBarFillStyle}></div>
      </div>
    </div>;
};

export const ChoiceDebug = ({option}) => {
  const [currentValue, setCurrentValue] = useState(null);
  const [allState, setAllState] = useState({});
  const [isDarkMode, setIsDarkMode] = useState(false);
  useEffect(() => {
    const updateState = () => {
      if (window.choiceStateManager) {
        setCurrentValue(window.choiceStateManager.getValue(option));
        setAllState(window.choiceStateManager.getState());
      }
    };
    updateState();
    const unsubscribe = window.listenToChoice?.(option, updateState) || (() => {});
    const handleGlobalUpdate = () => updateState();
    window.addEventListener("choiceStateUpdate", handleGlobalUpdate);
    return () => {
      unsubscribe();
      window.removeEventListener("choiceStateUpdate", handleGlobalUpdate);
    };
  }, [option]);
  useEffect(() => {
    const checkDarkMode = () => {
      if (document.documentElement.classList.contains("dark")) {
        setIsDarkMode(true);
      } else if (document.documentElement.classList.contains("light")) {
        setIsDarkMode(false);
      } else {
        setIsDarkMode(window.matchMedia("(prefers-color-scheme: dark)").matches);
      }
    };
    checkDarkMode();
    const mediaQuery = window.matchMedia("(prefers-color-scheme: dark)");
    const handleMediaChange = e => {
      if (!document.documentElement.classList.contains("dark") && !document.documentElement.classList.contains("light")) {
        setIsDarkMode(e.matches);
      }
    };
    mediaQuery.addEventListener("change", handleMediaChange);
    const observer = new MutationObserver(() => {
      checkDarkMode();
    });
    observer.observe(document.documentElement, {
      attributes: true,
      attributeFilter: ["class"]
    });
    return () => {
      mediaQuery.removeEventListener("change", handleMediaChange);
      observer.disconnect();
    };
  }, []);
  return <div style={{
    padding: "10px",
    backgroundColor: isDarkMode ? "#2d3748" : "#f5f5f5",
    border: isDarkMode ? "1px solid #4a5568" : "1px solid #ddd",
    borderRadius: "4px",
    fontSize: "12px",
    fontFamily: "monospace",
    marginTop: "20px",
    color: isDarkMode ? "#e2e8f0" : "inherit"
  }}>
      <strong>Choice Debug:</strong>
      <br />
      Option: {option}
      <br />
      Current Value: {currentValue || "undefined"}
      <br />
      All State: {JSON.stringify(allState, null, 2)}
    </div>;
};

export const Observe = ({option, value, children, ...props}) => {
  const [shouldShow, setShouldShow] = useState(false);
  useEffect(() => {
    const updateVisibility = () => {
      const matches = window.matchesChoiceValues?.(option, value) || false;
      setShouldShow(matches);
    };
    updateVisibility();
    const unsubscribe = window.listenToChoice?.(option, updateVisibility) || (() => {});
    return unsubscribe;
  }, [option, value]);
  if (!shouldShow) {
    return null;
  }
  return <div {...props}>{children}</div>;
};

export const Trigger = ({option, value, children, ...props}) => {
  const handleClick = () => {
    window.triggerChoice?.(option, value);
  };
  return <div onClick={handleClick} style={{
    cursor: "pointer"
  }} {...props}>
      {children}
    </div>;
};

export const Grid = ({columns = 2, compact = false, children, ...props}) => {
  const gridStyles = {
    display: "grid",
    gridTemplateColumns: `repeat(${columns}, 1fr)`,
    gap: compact ? "8px" : "16px",
    marginBottom: compact ? "10px" : "20px"
  };
  return <div style={gridStyles} {...props}>
      {children}
    </div>;
};

export const Choice = ({option, value, color = "", unset = false, lazy = false, children, ...props}) => {
  const [shouldShow, setShouldShow] = useState(false);
  const [hasEverShown, setHasEverShown] = useState(false);
  const [isDarkMode, setIsDarkMode] = useState(false);
  useEffect(() => {
    const updateVisibility = () => {
      const hasOptionValue = window.hasChoiceValue?.(option) || false;
      const matchesValue = window.matchesChoiceValues?.(option, value) || false;
      let show = false;
      if (unset && !hasOptionValue) {
        show = true;
      } else if (!unset && matchesValue) {
        show = true;
      }
      setShouldShow(show);
      if (show && !hasEverShown) {
        setHasEverShown(true);
      }
    };
    updateVisibility();
    const unsubscribe = window.listenToChoice?.(option, updateVisibility) || (() => {});
    return unsubscribe;
  }, [option, value, unset, hasEverShown]);
  useEffect(() => {
    const checkDarkMode = () => {
      if (document.documentElement.classList.contains("dark")) {
        setIsDarkMode(true);
      } else if (document.documentElement.classList.contains("light")) {
        setIsDarkMode(false);
      } else {
        setIsDarkMode(window.matchMedia("(prefers-color-scheme: dark)").matches);
      }
    };
    checkDarkMode();
    const mediaQuery = window.matchMedia("(prefers-color-scheme: dark)");
    const handleMediaChange = e => {
      if (!document.documentElement.classList.contains("dark") && !document.documentElement.classList.contains("light")) {
        setIsDarkMode(e.matches);
      }
    };
    mediaQuery.addEventListener("change", handleMediaChange);
    const observer = new MutationObserver(() => {
      checkDarkMode();
    });
    observer.observe(document.documentElement, {
      attributes: true,
      attributeFilter: ["class"]
    });
    return () => {
      mediaQuery.removeEventListener("change", handleMediaChange);
      observer.disconnect();
    };
  }, []);
  const getColorStyles = () => {
    const baseStyles = {
      border: isDarkMode ? "1px dashed #4a5568" : "1px dashed #e1e5e9",
      padding: "20px",
      marginBottom: "20px",
      borderRadius: "8px",
      backgroundColor: isDarkMode ? "#1a202c" : "#ffffff"
    };
    const colorMap = {
      green: {
        light: {
          backgroundColor: "#d4edda",
          borderColor: "#28a745"
        },
        dark: {
          backgroundColor: "#1a3a2a",
          borderColor: "#66bb6a"
        }
      },
      red: {
        light: {
          backgroundColor: "#f8d7da",
          borderColor: "#dc3545"
        },
        dark: {
          backgroundColor: "#3a1a1a",
          borderColor: "#ef5350"
        }
      },
      blue: {
        light: {
          backgroundColor: "#d1ecf1",
          borderColor: "#0c5460"
        },
        dark: {
          backgroundColor: "#1a2a3a",
          borderColor: "#42a5f5"
        }
      },
      none: {
        backgroundColor: "transparent",
        padding: "0",
        margin: "0",
        border: "none"
      }
    };
    const colorStyles = color !== "none" ? colorMap[color]?.[isDarkMode ? "dark" : "light"] || ({}) : colorMap.none;
    return {
      ...baseStyles,
      ...colorStyles
    };
  };
  if (lazy && !hasEverShown && !shouldShow) {
    return null;
  }
  return <div style={{
    ...getColorStyles(),
    display: shouldShow ? "block" : "none"
  }} className="choice-content" {...props}>
      {children}
    </div>;
};

export const Choose = ({option, value, color = "", children, ...props}) => {
  const [isSelected, setIsSelected] = useState(false);
  const [hasOptionTriggered, setHasOptionTriggered] = useState(false);
  const [isDarkMode, setIsDarkMode] = useState(false);
  useEffect(() => {
    const currentValue = window.getChoiceValue?.(option);
    const optionTriggered = window.hasChoiceValue?.(option) || false;
    setIsSelected(currentValue === value);
    setHasOptionTriggered(optionTriggered);
    const unsubscribe = window.listenToChoice?.(option, newValue => {
      setIsSelected(newValue === value);
      setHasOptionTriggered(true);
    }) || (() => {});
    return unsubscribe;
  }, [option, value]);
  useEffect(() => {
    const checkDarkMode = () => {
      if (document.documentElement.classList.contains("dark")) {
        setIsDarkMode(true);
      } else if (document.documentElement.classList.contains("light")) {
        setIsDarkMode(false);
      } else {
        setIsDarkMode(window.matchMedia("(prefers-color-scheme: dark)").matches);
      }
    };
    checkDarkMode();
    const mediaQuery = window.matchMedia("(prefers-color-scheme: dark)");
    const handleMediaChange = e => {
      if (!document.documentElement.classList.contains("dark") && !document.documentElement.classList.contains("light")) {
        setIsDarkMode(e.matches);
      }
    };
    mediaQuery.addEventListener("change", handleMediaChange);
    const observer = new MutationObserver(() => {
      checkDarkMode();
    });
    observer.observe(document.documentElement, {
      attributes: true,
      attributeFilter: ["class"]
    });
    return () => {
      mediaQuery.removeEventListener("change", handleMediaChange);
      observer.disconnect();
    };
  }, []);
  const handleClick = () => {
    window.triggerChoice?.(option, value);
  };
  const handleKeyDown = e => {
    if (e.key === "Enter" || e.key === " ") {
      e.preventDefault();
      handleClick();
    }
  };
  const getColorStyles = () => {
    const baseStyles = {
      border: isDarkMode ? "1px dashed #4a5568" : "1px dashed #e1e5e9",
      cursor: "pointer",
      padding: "20px",
      position: "relative",
      backgroundColor: isDarkMode ? "#2d3748" : "#f8f9fa",
      outline: "none",
      height: "100%",
      borderRadius: "8px",
      transition: "all 0.2s ease",
      display: "flex",
      flexDirection: "column"
    };
    const colorMap = {
      green: {
        light: {
          backgroundColor: "#d4edda",
          borderColor: "#28a745"
        },
        dark: {
          backgroundColor: "#1a3a2a",
          borderColor: "#66bb6a"
        }
      },
      red: {
        light: {
          backgroundColor: "#f8d7da",
          borderColor: "#dc3545"
        },
        dark: {
          backgroundColor: "#3a1a1a",
          borderColor: "#ef5350"
        }
      },
      blue: {
        light: {
          backgroundColor: "#d1ecf1",
          borderColor: "#0c5460"
        },
        dark: {
          backgroundColor: "#1a2a3a",
          borderColor: "#42a5f5"
        }
      }
    };
    const colorStyles = colorMap[color]?.[isDarkMode ? "dark" : "light"] || ({});
    if (isSelected) {
      return {
        ...baseStyles,
        ...colorStyles,
        borderStyle: "solid",
        borderWidth: "3px",
        borderColor: colorStyles.borderColor || (isDarkMode ? "#42a5f5" : "#0061d5"),
        backgroundColor: colorStyles.backgroundColor || (isDarkMode ? "#1a2a3a" : "#e3f2fd"),
        boxShadow: isDarkMode ? "0 2px 8px rgba(66, 165, 245, 0.3)" : "0 2px 8px rgba(0, 97, 213, 0.3)",
        transform: "scale(1.02)"
      };
    }
    if (hasOptionTriggered && !isSelected) {
      return {
        ...baseStyles,
        ...colorStyles,
        opacity: 0.5
      };
    }
    return {
      ...baseStyles,
      ...colorStyles
    };
  };
  const iconStyles = {
    float: "left",
    position: "relative",
    top: "2px",
    marginRight: "12px",
    width: "20px",
    height: "20px",
    color: isSelected ? isDarkMode ? "#42a5f5" : "#0061d5" : isDarkMode ? "#a0aec0" : "#666"
  };
  return <div onClick={handleClick} style={getColorStyles()} tabIndex={0} onKeyDown={handleKeyDown} {...props}>
      <div style={iconStyles}>
        {isSelected ? <svg viewBox="0 0 24 24" fill="currentColor" style={{
    width: "100%",
    height: "100%"
  }}>
            <path d="M12 2C6.48 2 2 6.48 2 12s4.48 10 10 10 10-4.48 10-10S17.52 2 12 2zm-2 15l-5-5 1.41-1.41L10 14.17l7.59-7.59L19 8l-9 9z" />
          </svg> : <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" style={{
    width: "100%",
    height: "100%"
  }}>
            <circle cx="12" cy="12" r="10" />
          </svg>}
      </div>
      <div style={{
    flex: 1
  }} className="choose-content">
        {children}
      </div>
    </div>;
};

<ProgressBar
  pages={[
                      "guides/sso-identities-and-app-users/connect-okta-to-app-users/scaffold-application-code",
                      "guides/sso-identities-and-app-users/connect-okta-to-app-users/configure-okta",
                      "guides/sso-identities-and-app-users/connect-okta-to-app-users/configure-box",
                      "guides/sso-identities-and-app-users/connect-okta-to-app-users/logging-into-app",
                      "guides/sso-identities-and-app-users/connect-okta-to-app-users/find-or-create-box-users",
                      "guides/sso-identities-and-app-users/connect-okta-to-app-users/run-the-app"
                    ]}
/>

Our first step in this guide is to create a local application to house our code
and configuration data as we start to create the Okta and Box applications that
will be needed.

Depending on your language / framework preference, create a blank application,
install the required dependencies, as well as all configuration and program
files.

Choose your preferred language / framework below to get started.

<Grid columns="2">
  <Choose option="programming.platform" value="node" color="blue">
    # Node

    Using the Express.js framework.
  </Choose>

  <Choose option="programming.platform" value="java" color="blue">
    # Java

    Using the Spring Boot framework.
  </Choose>
</Grid>

<Grid columns="2">
  <Choose option="programming.platform" value="python" color="blue">
    # Python

    Using the Flask framework.
  </Choose>

  <Choose option="programming.platform" value="cs" color="blue">
    # .NET

    Using the ASP.NET Core framework.
  </Choose>
</Grid>

<Choice option="programming.platform" value="node" color="none">
  * Create a local directory for your application.
  * Create a `package.json` file inside the local directory, open it in your preferred editor, copy / paste the following into it, and save / exit the file.

  ```json theme={null}
  {
    "name": "okta-box",
    "version": "1.0.0",
    "description": "Box / Okta sample integration",
    "main": "server.js",
    "scripts": {
      "test": "echo \"Error: no test specified\" && exit 1",
      "start": "node server.js"
    },
    "author": "Box",
    "license": "ISC",
    "dependencies": {
      "@okta/oidc-middleware": "^4.0.0",
      "@okta/okta-sdk-nodejs": "^3.2.0",
      "box-node-sdk": "^1.31.0",
      "express-session": "^1.17.0"
    }
  }
  ```

  * Run `npm init` from the terminal / console to install dependencies.
  * Create two files, `server.js` and `config.js` in the local directory.
  * Open `config.js` and save the following default configuration.

  ```js theme={null}
  const oktaClientId = exports.oktaClientId = '';
  const oktaClientSecret = exports.oktaClientSecret = '';
  const oktaOrgUrl = exports.oktaOrgUrl = '';
  const oktaBaseUrl = exports.oktaBaseUrl = 'http://localhost:3000';
  const oktaRedirect = exports.oktaRedirect = '/authorization-code/callback';
  ```
</Choice>

<Choice option="programming.platform" value="java" color="none">
  * From Eclipse, create a new project. When prompted, select a Gradle project.
  * Enter a unique name for the project, we used `okta.sample` for this guide.
  * Open your `build.gradle` file and add the following dependencies. Once saved, refresh the Gradle project.

  ```java theme={null}
  dependencies {
      implementation 'org.springframework.boot:spring-boot-starter-security'
      implementation 'org.springframework.boot:spring-boot-starter-web'
      implementation 'com.okta.spring:okta-spring-boot-starter:1.4.0'
      testImplementation('org.springframework.boot:spring-boot-starter-test') {
        exclude group: 'org.junit.vintage', module: 'junit-vintage-engine'
      }
      testImplementation 'org.springframework.security:spring-security-test'
      compile 'com.box:box-java-sdk:2.44.1'
  }
  ```

  * Open your `/src/main/resources/application.properties` file and save the following defaults.

  ```java theme={null}
  okta.oauth2.redirect-uri=/authorization-code/callback
  okta.oauth2.issuer=
  okta.oauth2.clientId=
  okta.oauth2.clientSecret=

  security.oauth2.sso.loginPath=/authorization-code/callback
  ```
</Choice>

<Choice option="programming.platform" value="python" color="none">
  * Create a local directory for your application.
  * Install needed dependencies using the following `pip` command from your terminal / command prompt: `pip install flask flask_oidc okta boxsdk config`
  * Create three files in the local directory, `client_secrets.json`, `config.py`, and `server.py`.
  * Open `config.py` and save the following into it. This will be some of Okta app configuration information needed. We'll fill in the remaining information in the next step.

  ```python theme={null}
  okta_client_secret = 'YOUR OKTA CLIENT SECRET'
  okta_org_url = 'YOUR OKTA ORG URL'
  okta_auth_token = 'YOUR OKTA APP TOKEN'
  okta_callback_route = '/oidc/callback'
  ```

  * Open `client_secrets.json` and save the following into it. This will be a standard object that the Flask OpenID Connect integration will use during configuration. We'll fill in the remaining information in the next step.

  ```json theme={null}
  {
    "web": {
      "client_id": "OKTA CLIENT ID",
      "client_secret": "OKTA CLIENT SECRET",
      "auth_uri": "OKTA AUTHORIZE URI",
      "token_uri": "OKTA TOKEN URI",
      "issuer": "OKTA APP DEFAULT",
      "userinfo_uri": "OKTA APP USER INFO URI",
      "redirect_uris": [
        "http://127.0.0.1:5000/oidc/callbac"
      ]
    }
  }
  ```
</Choice>

<Choice option="programming.platform" value="cs" color="none">
  * Create a local directory for your application.
  * Open a command prompt / terminal window and go to the local application directory. Using the [.NET Core CLI][dotnet-cli] type `dotnet new mvc` and hit enter. This will create the main scaffolding for a ASP.NET Core MVC (Model-View-Controller) web app. Alternately, create the application [directly from Visual Studio][vs-app-create].
  * From the command prompt / terminal window in the local application directory, add the Okta ASP.NET Core dependencies by typing `dotnet add package Okta.AspNetCore`and the Box dependencies by typing `dotnet add package Box.V2.Core`.
  * Load your new application into Visual Studio or your preferred editor.
  * Within the root of the project, open `Startup.cs`.
  * Add the following package declarations to the top of the file.

  ```csharp theme={null}
  using Microsoft.AspNetCore.Authentication.Cookies;
  using Okta.AspNetCore;
  ```

  * Replace the content of the `ConfigureServices` method with the following. We will fill in the specific Okta application values in the next step.

  ```csharp theme={null}
  services.AddControllersWithViews();
  services.AddAuthentication(options =>
  {
      options.DefaultAuthenticateScheme = CookieAuthenticationDefaults.AuthenticationScheme;
      options.DefaultSignInScheme = CookieAuthenticationDefaults.AuthenticationScheme;
      options.DefaultChallengeScheme = OktaDefaults.MvcAuthenticationScheme;
  })
  .AddCookie()
  .AddOktaMvc(new OktaMvcOptions
  {
      // Replace these values with your Okta configuration
      OktaDomain = "",
      ClientId = "",
      ClientSecret = ""
  });
  ```

  Add the following line to the **top** of the `Configure` method.

  ```csharp theme={null}
  app.UseAuthentication();
  ```
</Choice>

<Choice option="programming.platform" unset color="none">
  <Danger>
    **Incomplete previous step**
    Please select a preferred language / framework to get started.
  </Danger>
</Choice>

## Summary

* You created a new local application, files, and basic configuration details.
* You installed all project dependencies.

<Observe option="programming.platform" value="node,java,python">
  <Next>I have my local application set up</Next>
</Observe>

[dotnet-cli]: https://docs.microsoft.com/en-us/dotnet/core/tools/

[vs-app-create]: https://docs.microsoft.com/en-us/visualstudio/ide/quickstart-aspnet-core