# AskLibraryQuestionQuery

- File ID: file:xxwh7p:asklibraryquestionquery-cs
- Path: NexusReader.Application/Queries/Library/AskLibraryQuestionQuery.cs
- Role: handler
- Layer: application

## Purpose

Defines a MediatR query (AskLibraryQuestionQuery) and its handler which validates input and delegates question answering to an IKnowledgeService, returning a GroundedResponseDto result.

## Key Details

Handler enforces non-empty question, otherwise immediately fails; otherwise delegates to IKnowledgeService.AskQuestionAsync and returns that result.

## Symbols

- AskLibraryQuestionQueryHandler: Defines a MediatR query (AskLibraryQuestionQuery) and its handler which validates input and delegates question answering to an IKnowledgeService, returning a GroundedResponseDto result.
- AskLibraryQuestionQueryHandler(): Constructs the handler and captures the injected IKnowledgeService.
- Handle(): Validates the incoming question and forwards it to the knowledge service to obtain a grounded AI response.
- AskLibraryQuestionQuery: Represents a request to ask a question against the tenant's library (optionally scoped to an ebook) with a result limit.
- AskLibraryQuestionQueryHandler: MediatR request handler that orchestrates validation and calls the knowledge service.

## Dependencies

- No resolved dependencies.

## Calls

- No resolved calls.

## Unresolved References

- dependency-target: NexusReader.Application.Abstractions.Services
- dependency-target: NexusReader.Application.DTOs.AI
- dependency-target: MediatR
- dependency-target: FluentResults
- call-target: unknown
- interaction-target: Returns result of _knowledgeService.AskQuestionAsync(...)

## Coverage

- Symbols: 5
- Executable symbols: 2
- Executable symbols with control flow: 2
- Grounded edges: 5
- Unresolved references: 6
- Control-flow fragments: 2
- Unresolved jumps: 1
- Unsupported constructs: 0
- Control-flow coverage: 100%
- Required diagrams: 2
- Generated diagrams: 3

## Control Flow Fragments

- AskLibraryQuestionQueryHandler: 3 nodes, 2 edges, 0 jumps, 0 unsupported constructs
- Handle: 15 nodes, 16 edges, 1 jumps, 0 unsupported constructs

## Diagrams

### AskLibraryQuestionQuery Neighborhood

```mermaid
flowchart LR
    class_1n4pq65_asklibraryquestionqueryhandler("AskLibraryQuestionQueryHandler")
    file_xxwh7p_asklibraryquestionquery_cs("AskLibraryQuestionQuery")
    method_17jlxw0_handle[["Handle()"]]
    method_r0ndyk_asklibraryquestionqueryhandler[["AskLibraryQuestionQueryHandler()"]]
    type_bzkzmt_asklibraryquestionquery[/"AskLibraryQuestionQuery"/]
    type_s4lsqg_asklibraryquestionqueryhandler[/"AskLibraryQuestionQueryHandler"/]
```

### AskLibraryQuestionQuery Execution Overview

```mermaid
flowchart TD
    class_1n4pq65_asklibraryquestionqueryhandler("AskLibraryQuestionQueryHandler")
    method_17jlxw0_handle[["Handle()"]]
    method_r0ndyk_asklibraryquestionqueryhandler[["AskLibraryQuestionQueryHandler()"]]
    unresolved_unresolved_13z2o11_interaction_target{"Unresolved: Returns result of _knowledgeService.AskQuestionAsync(...)"}
    unresolved_unresolved_19u8vwm_call_target{"Unresolved: AskQuestionAsync"}
    class_1n4pq65_asklibraryquestionqueryhandler -->|contains| method_17jlxw0_handle
    class_1n4pq65_asklibraryquestionqueryhandler -->|contains| method_r0ndyk_asklibraryquestionqueryhandler
    class_1n4pq65_asklibraryquestionqueryhandler -->|unresolved interaction| unresolved_unresolved_13z2o11_interaction_target
    method_17jlxw0_handle -->|unresolved call| unresolved_unresolved_19u8vwm_call_target
```

### Handle() Control Flow

```mermaid
flowchart TD
    method_17jlxw0_handle__call_30_AskQuestionAsync[["AskQuestionAsync"]]
    method_17jlxw0_handle__action_25_guard_clause_25__condition{"string.IsNullOrWhiteSpace(request.Question)"}
    method_17jlxw0_handle__action_25_guard_clause_25__false("continue")
    method_17jlxw0_handle__action_25_guard_clause_25__merge("merge")
    method_17jlxw0_handle__action_25_guard_clause_25__true("invalid")
    method_17jlxw0_handle__action_25_handle_branch_25_0__condition{"string.IsNullOrWhiteSpace(request.Question)"}
    method_17jlxw0_handle__action_25_handle_branch_25_0__false("false")
    method_17jlxw0_handle__action_25_handle_branch_25_0__merge("merge")
    method_17jlxw0_handle__action_25_handle_branch_25_0__true("true")
    method_17jlxw0_handle__action_30_handle_await_30_2__await[["Waits for async work"]]
    method_17jlxw0_handle__entry(["Handle entry"])
    method_17jlxw0_handle__action_30_external_call_30__linear("Delegate to knowledge service")
    method_17jlxw0_handle__action_27_handle_return_27_1__return(["Returns result"])
    method_17jlxw0_handle__action_30_handle_return_30_3__return(["Returns result"])
    method_17jlxw0_handle__action_35_return_35__return(["Return service result"])
    method_17jlxw0_handle__action_25_guard_clause_25__condition -->|continue| method_17jlxw0_handle__action_25_guard_clause_25__false
    method_17jlxw0_handle__action_25_guard_clause_25__condition -->|invalid| method_17jlxw0_handle__action_25_guard_clause_25__true
    method_17jlxw0_handle__action_25_guard_clause_25__false -->|next| method_17jlxw0_handle__action_25_guard_clause_25__merge
    method_17jlxw0_handle__action_25_guard_clause_25__merge -->|next| method_17jlxw0_handle__action_25_handle_branch_25_0__condition
    method_17jlxw0_handle__action_25_guard_clause_25__true -->|next| method_17jlxw0_handle__action_25_guard_clause_25__merge
    method_17jlxw0_handle__action_25_handle_branch_25_0__condition -->|false| method_17jlxw0_handle__action_25_handle_branch_25_0__false
    method_17jlxw0_handle__action_25_handle_branch_25_0__condition -->|true| method_17jlxw0_handle__action_25_handle_branch_25_0__true
    method_17jlxw0_handle__action_25_handle_branch_25_0__false -->|next| method_17jlxw0_handle__action_25_handle_branch_25_0__merge
    method_17jlxw0_handle__action_25_handle_branch_25_0__merge -->|return| method_17jlxw0_handle__action_27_handle_return_27_1__return
    method_17jlxw0_handle__action_25_handle_branch_25_0__true -->|next| method_17jlxw0_handle__action_25_handle_branch_25_0__merge
    method_17jlxw0_handle__action_27_handle_return_27_1__return -->|next| method_17jlxw0_handle__action_30_handle_await_30_2__await
    method_17jlxw0_handle__action_30_external_call_30__linear -->|request.Question, request.TenantId, request.EbookId, request.Limit, cancellationToken| method_17jlxw0_handle__call_30_AskQuestionAsync
    method_17jlxw0_handle__action_30_handle_await_30_2__await -->|return| method_17jlxw0_handle__action_30_handle_return_30_3__return
    method_17jlxw0_handle__action_30_handle_return_30_3__return -->|next| method_17jlxw0_handle__action_30_external_call_30__linear
    method_17jlxw0_handle__call_30_AskQuestionAsync -->|return| method_17jlxw0_handle__action_35_return_35__return
    method_17jlxw0_handle__entry -->|next| method_17jlxw0_handle__action_25_guard_clause_25__condition
```

## Diagram Validation

- Status: warn
- Warning: Control-flow extraction left 1 unresolved jumps.
