### Get Product Packages

Source: https://context7.com/usix79/openquiz/llms.txt

Retrieves a list of all available product packages.

```APIDOC
## GET /api/packages/products

### Description
Retrieves a list of all available product packages.

### Method
GET

### Endpoint
/api/packages/products

### Response
#### Success Response (200)
- **PackageId** (integer) - The ID of the package.
- **Name** (string) - The name of the package.

#### Response Example
```json
[
  {
    "PackageId": 101,
    "Name": "Science Facts"
  },
  {
    "PackageId": 102,
    "Name": "History Trivia"
  }
]
```
```

--------------------------------

### F# Implement OpenQuiz Package Creation and Update API Calls

Source: https://context7.com/usix79/openquiz/llms.txt

Demonstrates how to interact with the `IMainApi` interface in F# to create and update question packages. The examples show the structure of the request arguments for `createPackage` and `updateProdPackageCard`, including defining slips with questions and answers.

```fsharp
// Create package with questions
let! packageResp = mainApi.createPackage { Token = ""; Arg = () }

// Update package with question content
let! updateResp = mainApi.updateProdPackageCard {
    Token = ""
    Arg = {
        PackageId = 67890
        Name = "History Quiz Round 1"
        Slips = [
            Single { 
                Caption = "Question 1"
                Question = Solid "Who was the first president of the United States?"
                QuestionMedia = None
                Answer = OpenAnswer "George Washington"
                AnswerMedia = None
                Comment = "First president, served 1789-1797"
                Points = 10M
                JeopardyPoints = Some 20M
                WithChoice = false
                Seconds = Some 60
                EndOfTour = false
            }
            Single { 
                Caption = "Question 2"
                Question = Split [
                    "Name the capital city"
                    "Name the largest city"
                    "Name the population"
                ]
                QuestionMedia = Some { Key = "qw/france-map.jpg"; Type = Image }
                Answer = ChoiceAnswer [
                    { Text = "Paris"; IsCorrect = true }
                    { Text = "London"; IsCorrect = false }
                    { Text = "Berlin"; IsCorrect = false }
                    { Text = "Madrid"; IsCorrect = false }
                ]
                AnswerMedia = None
                Comment = "France geography"
                Points = 15M
                JeopardyPoints = None
                WithChoice = true
                Seconds = Some 45
                EndOfTour = true
            }
        ]
    }
}
```

--------------------------------

### Bash Deployment Commands for OpenQuiz

Source: https://context7.com/usix79/openquiz/llms.txt

Provides essential bash commands for managing the OpenQuiz project's development workflow, client build, and deployment to AWS. These commands automate tasks like dependency restoration, local environment setup, and cloud deployment.

```bash
# Development workflow
dotnet fsi make.fsx restore
dotnet fsi make.fsx devenv
dotnet fsi make.fsx run

# Build client for production
npm run build:client

# Deploy to AWS
dotnet fsi make.fsx deploy

```

--------------------------------

### F# Implement OpenQuiz Package Sharing API Call

Source: https://context7.com/usix79/openquiz/llms.txt

Illustrates how to share a question package with another user using the `sharePackage` function from the `IMainApi` interface in F#. This example shows the required arguments, including the `PackageId` and the `UserId` of the recipient.

```fsharp
// Share package with another user
let! shareResp = mainApi.sharePackage {
    Token = ""
    Arg = {| PackageId = 67890; UserId = "other-user-sub-456" |}
}
```

--------------------------------

### Create and Manage Teams in F#

Source: https://context7.com/usix79/openquiz/llms.txt

Provides F# code for creating single teams, batch creation of teams, and updating team statuses. It includes type definitions for team management and examples of API calls.

```fsharp
// Shared types
type TeamStatus = | New | Admitted | Rejected

type AdminModels.TeamCard = {
    TeamId: int
    TeamName: string
    TeamStatus: TeamStatus
    EntryToken: string
    RegistrationDate: DateTime
}

// API interface
type IAdminApi = {
    getTeams: REQ<unit> -> ARESP<TeamRecord list>
    createTeam: REQ<{| TeamName: string |}> -> ARESP<{| Record: TeamRecord |}>
    createTeamBatch: REQ<{| TeamNames: string list |}> -> ARESP<unit>
    getTeamCard: REQ<{| TeamId: int |}> -> ARESP<TeamCard>
    updateTeamCard: REQ<TeamCard> -> ARESP<TeamRecord>
    changeTeamStatus: REQ<{| TeamId: int; TeamStatus: TeamStatus |}>
                     -> ARESP<TeamRecord>
    // ...
}

// Server implementation - AdminService.fs
let createTeam env quiz req = 
    let teamName = req.TeamName.Trim()

    let creator teamsInQuiz teamId = 
        match Domain.Teams.validateTeamUpdate true teamName teamsInQuiz quiz with 
        | Some txt -> Error txt
        | None -> Domain.Teams.createNewAdmin teamId teamName quiz Domain.Admitted |> Ok

    Data2.Teams.getDescriptors env quiz.QuizId
    |> AR.bind (fun teamsInQuiz -> 
        Data2.Teams.create env quiz.QuizId (creator teamsInQuiz)
        |> AR.map (fun team -> {| Record = Admin.teamRecord team.Dsc |}))
    |> AR.side (fun _ -> PublishResults quiz.QuizId |> env.PublisherAgent |> AR.retn)

// Create single team
let! teamResp = adminApi.createTeam {
    Token = ""
    Arg = {| TeamName = "The Quiz Masters" |}
}

// Create multiple teams at once
let! batchResp = adminApi.createTeamBatch {
    Token = ""
    Arg = {| 
        TeamNames = [
            "Team Alpha"
            "Team Beta"
            "Team Gamma"
            "The Brainiacs"
            "Quiz Wizards"
        ]
    |}
}

// Change team status (admit/reject)
let! statusResp = adminApi.changeTeamStatus {
    Token = ""
    Arg = {| 
        TeamId = 101
        TeamStatus = Admitted
    |}
}

// Expected result:
// { Record = { TeamId = 101
//              QuizId = 12345
//              TeamName = "The Quiz Masters"
//              Status = Admitted
//              RegistrationDate = 2025-10-15T14:30:00Z } }
```

--------------------------------

### F# Environment Configuration with AWS Systems Manager

Source: https://context7.com/usix79/openquiz/llms.txt

Configures the application environment using AWS Systems Manager Parameter Store. It defines an interface for configuration and builds the environment by fetching values from configuration sections and AWS Parameter Store. This setup is crucial for managing application settings across different environments.

```fsharp
// Env.fs - Configuration interfaces
type IConfigurer = 
    abstract DynamoTablePrefix: string
    abstract JwtSecret: string
    abstract UserPoolClientId: string
    abstract LoginUrl: string
    abstract AppUrl: string
    abstract BucketName: string
    abstract BucketUrl: string
    abstract AppSyncCfg: AppSyncConfig

// Server.fs - Build environment from AWS Parameter Store
let buildEnvironment envName logger (cfg: IConfiguration) = 
    let overrides = cfg.GetSection("Overrides")

    let getValue name = 
        match overrides.[name] with 
        | null -> cfg.[name]
        | txt -> txt

    let configurer = {
        new Env.IConfigurer with 
            member _.DynamoTablePrefix = 
                match overrides.["DynamoPrefix"] with 
                | null -> "OpenQuiz-" + envName
                | txt -> txt

            member _.JwtSecret = getValue "JwtSecret"
            member _.UserPoolClientId = getValue "UserPoolClientId"
            member _.LoginUrl = getValue "LoginUrl"
            member _.AppUrl = getValue "AppUrl"
            member _.BucketName = getValue "BucketName"
            member _.BucketUrl = getValue "BucketUrl"

            member _.AppSyncCfg = {
                Endpoint = getValue "AppSyncEndpoint"
                Region = getValue "AppSyncRegion"
                ApiKey = getValue "AppSyncApiKey"
            }
    }

    // Create environment with agents
    let publisherAgent = Agents.publisherAgent configurer logger
    let answersAgent = Agents.answersAgent configurer logger

    { Configurer = configurer
      Logger = logger
      PublisherAgent = publisherAgent
      AnswersAgent = answersAgent }

// Server.fs - Routing setup with Fable.Remoting
let appRouter env = 
    choose [
        route "/ping" >=> text "root pong"
        route "/api/login" >=> loginHandler env
        route "/api/ping" >=> text "api pong"
        apiHandler <| SecurityService.api env
        apiHandler <| MainService.api env
        apiHandler <| AdminService.api env
        apiHandler <| TeamService.api env
        apiHandler <| RegService.api env
        apiHandler <| AudService.api env
    ]

let apiHandler api = 
    Remoting.createApi()
    |> Remoting.withRouteBuilder (Infra.routeBuilder "")
    |> Remoting.fromContext api
    |> Remoting.withErrorHandler errorHandler
    |> Remoting.buildHttpHandler

// Route pattern: /api/{ServiceName}/{MethodName}
// Examples:
//   POST /api/OpenQuiz.IMainApi/createQuiz
//   POST /api/OpenQuiz.IAdminApi/getAnswers
//   POST /api/OpenQuiz.ITeamApi/answers

```

--------------------------------

### Quiz Lifecycle Management in F#

Source: https://context7.com/usix79/openquiz/llms.txt

Demonstrates F# code for controlling the lifecycle of a quiz, including changing its status, setting question packages, starting countdowns, and progressing through tours and questions. It defines relevant types and API interfaces.

```fsharp
// Shared types
type QuizStatus = | Setup | Live | Finished

type TourStatus = | Announcing | Countdown | Settled

type TourCard = {
    Idx: int
    Name: string
    Sec: int              // seconds for countdown
    TS: TourStatus
    Slip: SlipCard
    ST: DateTime option   // start time
}

type QuizControlCard = {
    QuizId: int
    Name: string
    Status: QuizStatus
    StreamUrl: string option
    Tour: TourCard option
    Package: PackageRecord option
}

// API interface
type IAdminApi = {
    getQuizCard: REQ<unit> -> ARESP<QuizControlCard>
    changeQuizStatus: REQ<{| QuizStatus: QuizStatus |}> -> ARESP<QuizControlCard>
    changeStreamUrl: REQ<string> -> ARESP<QuizControlCard>
    setPackage: REQ<{| PackageId: int option |}> -> ARESP<QuizControlCard>

    // Question control
    startCountDown: REQ<QuizControlCard> -> ARESP<QuizControlCard>
    pauseCountDown: REQ<unit> -> ARESP<QuizControlCard>
    settleTour: REQ<unit> -> ARESP<QuizControlCard>
    nextTour: REQ<unit> -> ARESP<QuizControlCard>
    nextQuestion: REQ<QuizControlCard> -> ARESP<QuizControlCard>
    nextQuestionPart: REQ<QuizControlCard> -> ARESP<QuizControlCard>
    showMedia: REQ<QuizControlCard> -> ARESP<QuizControlCard>
    showQuestion: REQ<QuizControlCard> -> ARESP<QuizControlCard>
    // ...
}

// Change quiz status to Live
let! liveResp = adminApi.changeQuizStatus {
    Token = ""
    Arg = {| QuizStatus = Live |}
}

// Attach question package to quiz
let! packageResp = adminApi.setPackage {
    Token = ""
    Arg = {| PackageId = Some 67890 |}
}

// Start countdown for current question
let! countdownResp = adminApi.startCountDown {
    Token = ""
    Arg = currentQuizCard
}

// Server implementation of question progression
let nextQuestion env quiz (card: QuizControlCard) req = 
    let logic (quiz: Domain.Quiz) = 
        quiz
        |> Domain.Quizzes.nextQuestion req.Slip req.QwIdx
        |> Ok

    Data2.Quizzes.update env quiz.QuizId logic
    |> AR.map Admin.quizCard
    |> AR.side (fun _ -> PublishResults quiz.QuizId |> env.PublisherAgent)

// Show question to teams
let! showResp = adminApi.showQuestion {
    Token = ""
    Arg = currentQuizCard
}

// Settle current tour (end question, show results)
let! settleResp = adminApi.settleTour {
    Token = ""
    Arg = ()
}

// Move to next tour
let! nextTourResp = adminApi.nextTour {
    Token = ""
    Arg = ()
}

// Finish quiz
let! finishResp = adminApi.changeQuizStatus {
    Token = ""
    Arg = {| QuizStatus = Finished |}
}
```

--------------------------------

### Update Quiz Configuration - F#

Source: https://context7.com/usix79/openquiz/llms.txt

This F# code snippet demonstrates how to update the configuration of an existing quiz. It includes the shared type definition for `QuizProdCard`, the server-side implementation for updating the quiz details, and a client-side example of how to call the update function with new card information.

```fsharp
// Shared types
type QuizProdCard = {
    QuizId: int
    Name: string
    StartTime: DateTime option
    ImgKey: string
    WelcomeText: string
    FarewellText: string
    RegText: string
    InfoText: string
    WithPremoderation: bool
    EventPage: string
    MixlrCode: string
    AdminUrl: string
    RegUrl: string
    AudUrl: string
    ResultsUrl: string
}

// Server implementation
let updateProdQuizCard env expert card =
    let logic (quiz: Domain.Quiz) =
        Domain.Quizzes.authorize expert.Id quiz.Dsc
        |> Result.map (fun _ ->
            let dsc = {
                quiz.Dsc with
                    Name = card.Name
                    StartTime = card.StartTime
                    ImgKey = card.ImgKey
                    WelcomeText = card.WelcomeText
                    FarewellText = card.FarewellText
                    RegText = card.RegText
                    InfoText = card.InfoText
                    WithPremoderation = card.WithPremoderation
                    EventPage = card.EventPage
                    MixlrCode = if card.MixlrCode.Trim() = "" then None
                               else Some card.MixlrCode
            }
            { quiz with Dsc = dsc })

    Data2.Quizzes.update env card.QuizId logic
    |> AR.map (fun quiz -> quiz.Dsc |> Main.quizProdRecord)

// Client usage
let! resp = mainApi.updateProdQuizCard {
    Token = ""
    Arg = {
        QuizId = 12345
        Name = "My Trivia Night"
        StartTime = Some (DateTime(2025, 11, 15, 19, 0, 0))
        ImgKey = "qz/abc123.jpg"
        WelcomeText = "Welcome to our quiz!"
        FarewellText = "Thanks for playing!"
        RegText = "Please register your team"
        InfoText = "Rules: Be honest and have fun!"
        WithPremoderation = true
        EventPage = "https://example.com/event"
        MixlrCode = "mixlr-embed-code"
        AdminUrl = ""
        RegUrl = ""
        AudUrl = ""
        ResultsUrl = ""
    }
}

```

--------------------------------

### Get Product Package Card

Source: https://context7.com/usix79/openquiz/llms.txt

Retrieves the full details of a specific product package card.

```APIDOC
## GET /api/packages/products/{PackageId}

### Description
Retrieves the full details of a specific product package card.

### Method
GET

### Endpoint
/api/packages/products/{PackageId}

### Parameters
#### Path Parameters
- **PackageId** (integer) - Required - The ID of the package to retrieve.

### Response
#### Success Response (200)
- **PackageId** (integer) - The ID of the package.
- **Name** (string) - The name of the package.
- **Slips** (Array<Slip>) - The list of slips (questions and answers) in the package.

#### Response Example
```json
{
  "PackageId": 67890,
  "Name": "History Quiz Round 1",
  "Slips": [
    {
      "Caption": "Question 1",
      "Question": {"Type": "Solid", "Text": "Who was the first president of the United States?"},
      "Answer": {"Type": "OpenAnswer", "Text": "George Washington"},
      "Comment": "First president, served 1789-1797",
      "Points": 10,
      "JeopardyPoints": 20,
      "WithChoice": false,
      "Seconds": 60,
      "EndOfTour": false
    }
  ]
}
```
```

--------------------------------

### Handling Real-Time Quiz Updates in UI (F#)

Source: https://context7.com/usix79/openquiz/llms.txt

This F# snippet demonstrates how to use the client-side AppSync subscription to handle real-time quiz updates within a UI component. It dispatches actions to update the application state based on the received `QuizChangedEvent`, such as starting a countdown or showing tour results.

```fsharp
// Client usage in Team interface (Team.fs)
let subscription =
    AppSync.subscribe appSyncCfg teamUser.QuizId listenToken
        (fun event ->
            // Handle real-time quiz updates
            match event.T with
            | Some tour when tour.TS = Countdown ->
                // Update countdown display
                dispatch (CountdownStarted tour)
            | Some tour when tour.TS = Settled ->
                // Show results
                dispatch (TourSettled tour)
            | _ ->
                // Refresh quiz state
                dispatch RefreshState)
```

--------------------------------

### F# Admin Answer Review and Grading API and Logic

Source: https://context7.com/usix79/openquiz/llms.txt

Provides F# code for an administrator's interface to manage quiz answers. It defines an API for retrieving answer bundles, updating results for submitted answers, and updating results for teams that did not submit an answer. Includes examples for fetching all answers and grading multiple submissions.

```fsharp
// Admin API for answer management
type IAdminApi = {
    getAnswers: REQ<Range option> -> ARESP<AnswersBundle>
    updateResults: REQ<{| TeamId: int; QwKey: QwKey; Res: decimal option |} list>
                  -> ARESP<unit>
    updateResultsWithoutAnswer: REQ<{| TeamId: int
                                       QwKey: QwKey
                                       Res: decimal option
                                       IsAccepted: bool |} list> -> ARESP<unit>
    // ...
}

type AnswersBundle = {
    Teams: TeamAnswersRecord list
    Tour: TourCard option
}

type TeamAnswersRecord = {
    TeamId: int
    TeamName: string
    Answer: Answer option
    Vote: bool option
}

// Get all answers for current question
let! answersResp = adminApi.getAnswers {
    Token = ""
    Arg = None  // Get all, or Some (start, count) for pagination
}

// Expected response:
// { Teams = [
//     { TeamId = 101
//       TeamName = "The Quiz Masters"
//       Answer = Some { Txt = "George Washington"
//                       Jpd = false
//                       RT = 2025-10-25T19:15:30Z
//                       Res = Some 10M
//                       IsA = true
//                       UT = Some 2025-10-25T19:16:00Z }
//       Vote = Some true }
//     { TeamId = 102
//       TeamName = "Brainiacs"
//       Answer = Some { Txt = "Washington"
//                       Jpd = true
//                       RT = 2025-10-25T19:15:45Z
//                       Res = Some 20M
//                       IsA = true
//                       UT = None }
//       Vote = None }
//   ]
//   Tour = Some { Idx = 0; Name = "Round 1"; ... } }

// Update results for multiple teams
let! updateResp = adminApi.updateResults {
    Token = ""
    Arg = [
        {| TeamId = 101
           QwKey = { TourIdx = 0; QwIdx = 0 }
           Res = Some 10M |}  // Full points
        {| TeamId = 102
           QwKey = { TourIdx = 0; QwIdx = 0 }
           Res = Some 20M |}  // Jeopardy bonus
        {| TeamId = 103
           QwKey = { TourIdx = 0; QwIdx = 0 }
           Res = Some 0M |}   // Incorrect
    ]
}

// Award points to team that didn't submit answer
let! manualResp = adminApi.updateResultsWithoutAnswer {
    Token = ""
    Arg = [
        {| TeamId = 104
           QwKey = { TourIdx = 0; QwIdx = 0 }
           Res = Some 10M
           IsAccepted = true |}
    ]
}
```

--------------------------------

### F# DynamoDB Expert Data Access with AsyncResult

Source: https://context7.com/usix79/openquiz/llms.txt

This F# module, Data2.Experts, handles DynamoDB interactions for expert data. It defines functions to get, update, and create expert records asynchronously using the AsyncResult pattern. These functions interact with a `DataLibrary` for the actual database operations and `Expert` type for data representation.

```fsharp
module Data2 = 
    module Experts = 
        let get env expertId : ARES<Expert> = 
            async {
                let! result = DataLibrary.getItem env.TableName expertId
                match result with 
                | Ok attrs -> 
                    return Expert.fromAttrs attrs |> Ok
                | Error e -> 
                    return Error e
            }

        let update env expertId logic : ARES<Expert> = 
            async {
                let! current = get env expertId
                match current with 
                | Ok expert -> 
                    match logic expert with 
                    | Ok updated -> 
                        let attrs = Expert.toAttrs updated
                        let! writeResult = 
                            DataLibrary.putItem env.TableName expertId attrs
                        match writeResult with 
                        | Ok _ -> return Ok updated
                        | Error e -> return Error e
                    | Error e -> return Error e
                | Error e -> return Error e
            }

        let create env creator : ARES<Expert> = 
            async {
                let expertId = Guid.NewGuid().ToString()
                let expert = creator expertId
                let attrs = Expert.toAttrs expert
                let! result = DataLibrary.putItem env.TableName expertId attrs
                match result with 
                | Ok _ -> return Ok expert
                | Error e -> return Error e
            }
```

--------------------------------

### PUT /api/quizzes/{quizId}/card

Source: https://context7.com/usix79/openquiz/llms.txt

Updates the configuration of an existing quiz. This endpoint allows modification of quiz details such as name, start time, and text content.

```APIDOC
## PUT /api/quizzes/{quizId}/card

### Description
Updates the configuration for a specific quiz identified by its ID. Allows modification of various quiz settings.

### Method
PUT

### Endpoint
/api/quizzes/{quizId}/card

### Parameters
#### Path Parameters
- **quizId** (integer) - Required - The ID of the quiz to update.

#### Request Body
- **cardUpdate** (object) - Required - Contains the updated quiz card information.
  - **QuizId** (integer) - Required - The ID of the quiz being updated.
  - **Name** (string) - Optional - The new name for the quiz.
  - **StartTime** (string or null) - Optional - The new scheduled start time for the quiz (ISO 8601 format).
  - **ImgKey** (string) - Optional - The new image key for the quiz.
  - **WelcomeText** (string) - Optional - The updated welcome message.
  - **FarewellText** (string) - Optional - The updated farewell message.
  - **RegText** (string) - Optional - The updated registration text.
  - **InfoText** (string) - Optional - The updated information text.
  - **WithPremoderation** (boolean) - Optional - Whether to enable or disable pre-moderation.
  - **EventPage** (string) - Optional - The URL for the event page.
  - **MixlrCode** (string) - Optional - The updated Mixlr embed code. An empty string will clear the code.

### Request Example
```json
{
  "QuizId": 12345,
  "Name": "My Trivia Night",
  "StartTime": "2025-11-15T19:00:00Z",
  "ImgKey": "qz/abc123.jpg",
  "WelcomeText": "Welcome to our quiz!",
  "FarewellText": "Thanks for playing!",
  "RegText": "Please register your team",
  "InfoText": "Rules: Be honest and have fun!",
  "WithPremoderation": true,
  "EventPage": "https://example.com/event",
  "MixlrCode": "mixlr-embed-code"
}
```

### Response
#### Success Response (200)
- **Record** (object) - The updated quiz record details.
  - **QuizId** (integer) - The unique identifier for the quiz.
  - **Producer** (string) - The ID of the quiz producer.
  - **Name** (string) - The name of the quiz.
  - **Status** (string) - The current status of the quiz.
  - **StartTime** (string or null) - The scheduled start time of the quiz.
  - **ImgKey** (string) - The key for the quiz image.
  - **WelcomeText** (string) - Welcome message for participants.
  - **FarewellText** (string) - Farewell message for participants.
  - **RegText** (string) - Registration text.
  - **InfoText** (string) - Information text about the quiz.
  - **WithPremoderation** (boolean) - Whether pre-moderation is enabled.
  - **EventPage** (string) - URL for the event page.
  - **MixlrCode** (string or null) - Mixlr embed code.
  - **PackageId** (integer or null) - Associated package ID.
  - **Version** (integer) - The version of the quiz record.

### Response Example
```json
{
  "Record": {
    "QuizId": 12345,
    "Producer": "user-sub-123",
    "Name": "My Trivia Night",
    "Status": "Setup",
    "StartTime": "2025-11-15T19:00:00Z",
    "ImgKey": "qz/abc123.jpg",
    "WelcomeText": "Welcome to our quiz!",
    "FarewellText": "Thanks for playing!",
    "RegText": "Please register your team",
    "InfoText": "Rules: Be honest and have fun!",
    "WithPremoderation": true,
    "EventPage": "https://example.com/event",
    "MixlrCode": "mixlr-embed-code",
    "PackageId": null,
    "Version": 1
  }
}
```
```

--------------------------------

### Client-Side S3 Upload and Media URL Construction (F#)

Source: https://context7.com/usix79/openquiz/llms.txt

This F# code demonstrates the client-side usage of a pre-signed S3 upload URL. It includes fetching the upload URL, performing a PUT request with the file content, handling the upload response, and then constructing the final media URL for display using a media host and the saved key. This involves using `fetch` API and conditional logic for external URLs.

```fsharp
// Client usage - upload image for quiz
let! urlResp = mainApi.getUploadUrl {
    Token = ""
    Arg = {| Cat = QuizImg |}
}

match urlResp.Value with
| Ok urlData ->
    // Upload file directly to S3 using pre-signed URL
    let! uploadResp =
        fetch urlData.Url [
            Method "PUT"
            Body (U3.Case3 imageBlob)
            Headers [ ContentType "image/jpeg" ]
        ]

    if uploadResp.Ok then
        // Save media key for later use
        let mediaKey = urlData.BucketKey  // e.g., "qz/abc-123-def"

        // Update quiz with new image
        let! updateResp = mainApi.updateProdQuizCard {
            Token = ""
            Arg = { currentCard with ImgKey = mediaKey }
        }
        printfn "Quiz image updated successfully"
    else
        printfn "Upload failed: %s" uploadResp.StatusText
| Error err ->
    printfn "Failed to get upload URL: %s" err

// Retrieve media URL for display
let urlForMedia mediaHost key =
    if key.Contains(".") then key  // External URL
    else sprintf "%s/media/%s" mediaHost key  // CloudFront CDN

// Display image in UI
let imageUrl = urlForMedia settings.MediaHost "qz/abc-123-def"
// Result: "https://d1234.cloudfront.net/media/qz/abc-123-def"
```

--------------------------------

### Create Package

Source: https://context7.com/usix79/openquiz/llms.txt

Creates a new quiz package with a name and a list of slips (questions and answers).

```APIDOC
## POST /api/packages

### Description
Creates a new quiz package.

### Method
POST

### Endpoint
/api/packages

### Parameters
#### Request Body
- **Name** (string) - Required - The name of the package.
- **Slips** (Array<Slip>) - Required - A list of slips, where each slip contains question details.

### Request Example
```json
{
  "Name": "Sample Quiz",
  "Slips": [
    {
      "Caption": "Question 1",
      "Question": {"Type": "Solid", "Text": "What is 2+2?"},
      "Answer": {"Type": "OpenAnswer", "Text": "4"},
      "Points": 10,
      "WithChoice": false,
      "EndOfTour": false
    }
  ]
}
```

### Response
#### Success Response (200)
- **PackageId** (integer) - The ID of the newly created package.
- **Name** (string) - The name of the package.
- **Slips** (Array<Slip>) - The list of slips in the package.

#### Response Example
```json
{
  "PackageId": 12345,
  "Name": "Sample Quiz",
  "Slips": [
    {
      "Caption": "Question 1",
      "Question": {"Type": "Solid", "Text": "What is 2+2?"},
      "Answer": {"Type": "OpenAnswer", "Text": "4"},
      "Points": 10,
      "WithChoice": false,
      "EndOfTour": false
    }
  ]
}
```
```

--------------------------------

### F# DynamoDB CRUD Operations (PutItem, GetItem)

Source: https://context7.com/usix79/openquiz/llms.txt

Implements essential DynamoDB operations in F# for putting and getting items. It utilizes the custom attribute value conversion and handles potential errors during DynamoDB interactions, returning results asynchronously.

```fsharp
// DynamoDB operations
let putItem tableName key (attrs: Attr list) : Async<Result<unit, string>> =
    async {
        let request = PutItemRequest()
        request.TableName <- tableName
        request.Item <- attrs |> List.map (fun (k, v) -> k, toAttributeValue v) |> dict

        try
            let! response = dynamoClient.PutItemAsync(request) |> Async.AwaitTask
            return Ok ()
        with ex ->
            return Error ex.Message
    }

let getItem tableName key : Async<Result<Attr list, string>> =
    async {
        let request = GetItemRequest()
        request.TableName <- tableName
        request.Key <- dict [ "Id", AttributeValue(S = key) ]

        try
            let! response = dynamoClient.GetItemAsync(request) |> Async.AwaitTask
            let attrs = response.Item
                       |> Seq.map (fun kvp -> kvp.Key, fromAttributeValue kvp.Value)
                       |> List.ofSeq
            return Ok attrs
        with ex ->
            return Error ex.Message
    }

```

--------------------------------

### F# Workflow for Creating a Quiz with AsyncResult Composition

Source: https://context7.com/usix79/openquiz/llms.txt

This F# code demonstrates a workflow for creating a quiz and updating an expert's quiz list using the AsyncResult pattern. It composes multiple asynchronous operations, including quiz creation and expert record updates, chaining them together with `AR.side` and `AR.map` for sequential execution and transformation.

```fsharp
// Domain logic composition example
let createQuizWorkflow env expert =
    // Create quiz
    Data2.Quizzes.create env (fun id -> Domain.Quizzes.createNew id expert.Id)
    // Update expert's quiz list
    |> AR.side (fun quiz ->
        Data2.Experts.update env expert.Id
            (Domain.Experts.addQuiz quiz.Dsc.QuizId))
    // Transform to response model
    |> AR.map (fun quiz -> Main.quizProdCard quiz)

// Usage with error handling
let! result = createQuizWorkflow env expert
match result with 
| Ok card -> 
    printfn "Quiz created: %s" card.Name
| Error msg -> 
    printfn "Error: %s" msg
```

--------------------------------

### AWS Infrastructure Overview with CDK

Source: https://context7.com/usix79/openquiz/llms.txt

Outlines the expected AWS infrastructure components managed by AWS CDK for the production environment. This includes compute, storage, database, CDN, authentication, API, and logging services.

```bash
# Expected infrastructure (Cdk/ProductionStack.fs):
# - Elastic Beanstalk environment
# - DynamoDB tables (Experts, Quizzes, Teams, Packages, Answers, RefreshTokens)
# - S3 bucket for media storage
# - CloudFront distribution for CDN
# - Cognito User Pool for authentication
# - AppSync GraphQL API for real-time subscriptions
# - CloudWatch logging
# - Systems Manager Parameter Store for configuration

```

--------------------------------

### Initialize Quiz Results Page (JavaScript)

Source: https://github.com/usix79/openquiz/blob/master/src/Client/public/results.html

This snippet initializes the quiz results page on document ready. It sets default parameters, parses URL parameters, retrieves localization strings, sets the page title and meta descriptions, updates the quiz logo and name, and fetches the results JSON data to display. Dependencies include jQuery and a hypothetical 'getL10n' function and '$.parseParams'.

```javascript
$(document).ready(function() {
    var defaults = {
        quiz : 0,
        quizName : "",
        quizImg : "",
        teamId : 0,
        token : "",
        url: "https://www.open-quiz.com"
    }
    var parameters = $.parseParams(location.search.substring(1))
    var settings = $.extend({}, defaults, parameters);
    var l10n = getL10n() // alert(JSON.stringify(l10n))
    var title = settings.quizName + " - " + l10n.results
    document.title = title
    $("meta[name='description']").attr("content", title)
    $("meta[property='og\\:description']").attr("content", title)
    $("meta[property='og\\:url']").attr("content", window.location.href)
    if (settings.quizImg != ""){
        $("#quizLogo").attr("src", settings.url + "/media/" + settings.quizImg);
    }
    $("#quizName").text(settings.quizName);
    var isEmbeded = settings.who === "emb"
    if (!isEmbeded){
        $(".hero-head").show()
        $(".hero-foot").show()
    }
    var url = settings.url + "/static/" + settings.quiz + "-" + settings.token + "/results.json?nocache=" + (new Date()).getTime()
    $.getJSON(url, function(data) {
        displayResults(data, settings.teamId, l10n)
    });
});
```

--------------------------------

### Create New Quiz - F#

Source: https://context7.com/usix79/openquiz/llms.txt

This F# code defines the API interface for quiz creation, the server-side implementation for creating a new quiz, the domain model for a quiz, and the client-side command to initiate quiz creation. It outlines the process of generating a new quiz record and associating it with an expert.

```fsharp
// Shared type - API interface
type IMainApi = {
    createQuiz: REQ<unit> -> ARESP<{| Record: QuizProdRecord
                                       Card: QuizProdCard |}>
    getProdQuizzes: REQ<unit> -> ARESP<QuizProdRecord list>
    getProdQuizCard: REQ<{| QuizId: int |}> -> ARESP<QuizProdCard>
    updateProdQuizCard: REQ<QuizProdCard> -> ARESP<QuizProdRecord>
    deleteQuiz: REQ<{| QuizId: int |}> -> ARESP<unit>
    // ... other methods
}

// Server implementation - MainService.fs
let createQuiz env expert _ =
    let creator quizId =
        Domain.Quizzes.createNew quizId expert.Id expert.DefaultImg expert.DefaultMixlr

    let logic (quiz: Domain.Quiz) expert =
        expert |> Domain.Experts.addQuiz quiz.Id |> Ok

    Data2.Quizzes.create env creator
    |> AR.side (fun quiz -> Data2.Experts.update env expert.Id (logic quiz))
    |> AR.map (fun quiz ->
        {| Record = quiz.Dsc |> Main.quizProdRecord
           Card = Main.quizProdCard quiz |})

// Domain model - Domain.fs
module Quizzes =
    let createNew quizId producerId defaultImg defaultMixlr =
        let dsc = {
            QuizId = quizId
            Producer = producerId
            Name = sprintf "Quiz%i" quizId
            Status = Setup
            AdminToken = generateRandomToken()
            ListenToken = generateRandomToken()
            StartTime = None
            ImgKey = defaultImg
            WelcomeText = ""
            FarewellText = ""
            RegText = ""
            InfoText = ""
            WithPremoderation = false
            EventPage = ""
            MixlrCode = defaultMixlr
            PackageId = None
            Version = 0
        }
        { Dsc = dsc; Tours = []; Version = 0 } : Quiz

// Client usage - MainProdQuizzes.fs
let createQuizCmd (api: IMainApi) =
    Cmd.OfAsync.either
        (fun _ -> api.createQuiz { Token = ""; Arg = () })
        ()
        (fun resp ->
            match resp.Value with
            | Ok result -> QuizCreated result
            | Error txt -> ErrorOccurred txt)
        (fun ex -> ErrorOccurred ex.Message)

// Expected result:
// { Record = { QuizId = 12345
//              Producer = "user-sub-123"
//              Name = "Quiz12345"
//              Status = Setup
//              StartTime = None
//              ... }
//   Card = { QuizId = 12345
//            Name = "Quiz12345"
//            AdminUrl = "https://open-quiz.com/admin/12345/abc-token"
//            RegUrl = "https://open-quiz.com/reg/12345/xyz-token"
//            ... }
// }

```

--------------------------------

### Localization Function for Quiz Results

Source: https://github.com/usix79/openquiz/blob/master/src/Client/public/results.html

Provides a function to get localized strings for quiz result elements based on the browser's language settings. It supports English, Russian, Ukrainian, Azerbaijani, and Uzbek languages. Returns an object with localized labels.

```javascript
function getL10n() {
  function getLang() {
    for (var i = 0; i < window.navigator.languages.length; i++) {
      var lang = window.navigator.languages[i]
      if (lang.startsWith("en")) { return "en" }
      if (lang.startsWith("ru")) { return "ru" }
      if (lang.startsWith("uk")) { return "uk" }
      if (lang.startsWith("az")) { return "az" }
      if (lang.startsWith("uz")) { return "uz" }
    }
    return "en"
  }
  var lang = getLang()

  function l(en, ru, uk, az, uz) {
    if (lang == "ru") { return ru }
    if (lang == "uk") { return uk }
    if (lang == "az") { return az }
    if (lang == "uz") { return uz }
    return en
  }
  var l10n = {
    results: l("Results", "Результаты", "Результати", "Nəticələr", "Натижалар"),
    team: l("Team", "Команда", "Команда", "Komanda", "Жамоа"),
    points: l("Points", "Очки", "Очки", "Xallar", "Очколар"),
    ratingOfDifficulty: l("Rating", "Рейтинг", "Рейтинг", "Reytinq", "Рейтинг"),
    place: l("Place", "Место", "Місце", "Yer", "Ўрин"),
    questionDifficulty: l("Question difficulty", "Сложность вопроса", "Складність питання", "Sualın mürəkkəbliyi", "Савол қийинлиги"),
    questionVotes: l("Question karma", "Карма вопроса", "Карма питання", "Sualın karma", "Савол кармаси"),
    questionRating: l("Question rating", "Рейтинг вопроса", "Рейтинг питання", "Sualın reytinqi", "Савол рейтинги"),
    toShortView: l('less details', "скрыть детали", "сховати подробицi", "daha çox", "деталларни беркитиш"),
    toFullView: l('more details', "показать детали", "показати подробицi", "daha az", "батафсил"),
    tour: l('Tour', "Тур", "Тур", "Tur", "Босқич")
  }
  return l10n
}
```

--------------------------------

### Aquire Package

Source: https://context7.com/usix79/openquiz/llms.txt

Allows a user to acquire a package using a transfer token.

```APIDOC
## POST /api/packages/{PackageId}/aquire

### Description
Allows a user to acquire a package using a transfer token.

### Method
POST

### Endpoint
/api/packages/{PackageId}/aquire

### Parameters
#### Path Parameters
- **PackageId** (integer) - Required - The ID of the package to acquire.
#### Request Body
- **TransferToken** (string) - Required - The token required to acquire the package.

### Request Example
```json
{
  "TransferToken": "your-secure-transfer-token"
}
```

### Response
#### Success Response (200)
- **PackageId** (integer) - The ID of the acquired package.
- **Name** (string) - The name of the acquired package.

#### Response Example
```json
{
  "PackageId": 98765,
  "Name": "Acquired Special Package"
}
```
```

--------------------------------

### Client-Side GraphQL Subscription for Real-Time Quiz Updates (F#)

Source: https://context7.com/usix79/openquiz/llms.txt

This F# code sets up a client-side subscription to AWS AppSync for real-time quiz updates. It uses the Amplify library to establish the subscription and processes incoming messages, parsing them into `QuizChangedEvent` objects. The `onMessage` callback function handles the received events.

```fsharp
// Client-side subscription setup (AppSync.fs)
module AppSync =
    open Amplify
    open Amplify.Core
    open Amplify.API

    let subscribe config quizId token onMessage = 
        let query = """
            subscription OnQuizMessage($quizId: Int!, $token: String!) {
              onQuizMessage(quizId: $quizId, token: $token) {
                body
                quizId
                token
                version
              }
            }
        """

        Amplify.API.GraphQL.subscribe(query, {| 
            quizId = quizId
            token = token
        |})
        |> Observable.subscribe (fun response ->
            match response.data with
            | Some data ->
                let event = Json.parse<QuizChangedEvent> data.body
                onMessage event
            | None -> ())
```

--------------------------------

### F# Define Question and Package Structures for OpenQuiz

Source: https://context7.com/usix79/openquiz/llms.txt

Defines the F# type definitions for questions, answers, slips, and packages. These structures are fundamental for organizing and storing quiz content within the OpenQuiz system. They include various question formats (single text, split text) and answer types (free text, multiple choice).

```fsharp
// Shared types for questions
type Question =
    | Solid of string                 // Single question text
    | Split of string list            // Multi-part question

type SlipAnswer =
    | OpenAnswer of string            // Free text answer
    | ChoiceAnswer of ChoiceAnswer list  // Multiple choice

type ChoiceAnswer = { Text: string; IsCorrect: bool }

type SingleSlip = {
    Caption: string
    Question: Question
    QuestionMedia: MediaDsc option
    Answer: SlipAnswer
    AnswerMedia: MediaDsc option
    Comment: string
    Points: decimal
    JeopardyPoints: decimal option
    WithChoice: bool
    Seconds: int option
    EndOfTour: bool
}

type Slip =
    | Single of SingleSlip
    | Multiple of string * SingleSlip list

type PackageCard = {
    PackageId: int
    Name: string
    Slips: Slip list
}

// API interface
type IMainApi = {
    createPackage: REQ<unit> -> ARESP<{| Record: PackageRecord
                                          Card: PackageCard |}>
    getProdPackages: REQ<unit> -> ARESP<PackageRecord list>
    getProdPackageCard: REQ<{| PackageId: int |}> -> ARESP<PackageCard>
    updateProdPackageCard: REQ<PackageCard> -> ARESP<PackageRecord>
    deletePackage: REQ<{| PackageId: int |}> -> ARESP<unit>
    sharePackage: REQ<{| PackageId: int; UserId: string |}> -> ARESP<ExpertRecord>
    removePackageShare: REQ<{| PackageId: int; UserId: string |}> -> ARESP<unit>
    aquirePackage: REQ<{| PackageId: int; TransferToken: string |}
                  -> ARESP<PackageRecord>
    // ...
}
```