Repository: Learnathon-By-Geeky-Solutions/procastinators
Pull request #62: feat: get user info by email
Author: login: sakibhossain323
Created: 2025-04-29T02:23:38Z | Merged: 2025-04-29T02:27:50Z



Diff:
diff --git a/backend/src/FinanceTracker.Api/Controllers/UsersController.cs b/backend/src/FinanceTracker.Api/Controllers/UsersController.cs
new file mode 100644
index 0000000..75e6a91
--- /dev/null
+++ b/backend/src/FinanceTracker.Api/Controllers/UsersController.cs
@@ -0,0 +1,19 @@
+﻿using FinanceTracker.Application.Users.Queries.GetUserInfoByEmail;
+using MediatR;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+
+namespace FinanceTracker.Api.Controllers;
+
+[ApiController]
+[Route("api/[controller]")]
+[Authorize]
+public class UsersController(IMediator mediator) : ControllerBase
+{
+    [HttpGet("{email}")]
+    public async Task<IActionResult> GetUserInfoByEmail([FromRoute] string email)
+    {
+        var result = await mediator.Send(new GetUserInfoByEmailQuery { Email = email });
+        return Ok(result);
+    }
+}
diff --git a/backend/src/FinanceTracker.Application/Users/Dtos/UserInfoDto.cs b/backend/src/FinanceTracker.Application/Users/Dtos/UserInfoDto.cs
new file mode 100644
index 0000000..551eb89
--- /dev/null
+++ b/backend/src/FinanceTracker.Application/Users/Dtos/UserInfoDto.cs
@@ -0,0 +1,8 @@
+﻿namespace FinanceTracker.Application.Users.Dtos;
+
+public class UserInfoDto
+{
+    public string Id { get; set; } = default!;
+    public string Email { get; set; } = default!;
+    public string UserName { get; set; } = default!;
+}
diff --git a/backend/src/FinanceTracker.Application/Users/Dtos/UserInfoProfile.cs b/backend/src/FinanceTracker.Application/Users/Dtos/UserInfoProfile.cs
new file mode 100644
index 0000000..1d28a19
--- /dev/null
+++ b/backend/src/FinanceTracker.Application/Users/Dtos/UserInfoProfile.cs
@@ -0,0 +1,11 @@
+﻿using FinanceTracker.Domain.Entities;
+
+namespace FinanceTracker.Application.Users.Dtos;
+
+public class UserInfoProfile : AutoMapper.Profile
+{
+    public UserInfoProfile()
+    {
+        CreateMap<User, UserInfoDto>();
+    }
+}
diff --git a/backend/src/FinanceTracker.Application/Users/Queries/GetUserInfoByEmail/GetUserInfoByEmailQuery.cs b/backend/src/FinanceTracker.Application/Users/Queries/GetUserInfoByEmail/GetUserInfoByEmailQuery.cs
new file mode 100644
index 0000000..960ac73
--- /dev/null
+++ b/backend/src/FinanceTracker.Application/Users/Queries/GetUserInfoByEmail/GetUserInfoByEmailQuery.cs
@@ -0,0 +1,9 @@
+﻿using FinanceTracker.Application.Users.Dtos;
+using MediatR;
+
+namespace FinanceTracker.Application.Users.Queries.GetUserInfoByEmail;
+
+public class GetUserInfoByEmailQuery : IRequest<UserInfoDto>
+{
+    public string Email { get; set; } = default!;
+}
diff --git a/backend/src/FinanceTracker.Application/Users/Queries/GetUserInfoByEmail/GetUserInfoByEmailQueryHandler.cs b/backend/src/FinanceTracker.Application/Users/Queries/GetUserInfoByEmail/GetUserInfoByEmailQueryHandler.cs
new file mode 100644
index 0000000..a40ff45
--- /dev/null
+++ b/backend/src/FinanceTracker.Application/Users/Queries/GetUserInfoByEmail/GetUserInfoByEmailQueryHandler.cs
@@ -0,0 +1,32 @@
+﻿using AutoMapper;
+using FinanceTracker.Application.Users.Dtos;
+using FinanceTracker.Domain.Entities;
+using FinanceTracker.Domain.Exceptions;
+using FinanceTracker.Domain.Repositories;
+using MediatR;
+using Microsoft.Extensions.Logging;
+
+namespace FinanceTracker.Application.Users.Queries.GetUserInfoByEmail;
+
+public class GetUserInfoByEmailQueryHandler(
+    ILogger<GetUserInfoByEmailQueryHandler> logger,
+    IUserContext userContext,
+    IUserRepository userRepo,
+    IMapper mapper
+) : IRequestHandler<GetUserInfoByEmailQuery, UserInfoDto>
+{
+    public async Task<UserInfoDto> Handle(
+        GetUserInfoByEmailQuery request,
+        CancellationToken cancellationToken
+    )
+    {
+        var reqUser = userContext.GetUser() ?? throw new ForbiddenException();
+        logger.LogInformation("{@ru} requested:\n{@r}", reqUser, request);
+
+        var user =
+            await userRepo.GetByEmailAsync(request.Email)
+            ?? throw new NotFoundException(nameof(User), request.Email);
+
+        return mapper.Map<UserInfoDto>(user);
+    }
+}
diff --git a/backend/src/FinanceTracker.Domain/Repositories/IUserRepository.cs b/backend/src/FinanceTracker.Domain/Repositories/IUserRepository.cs
new file mode 100644
index 0000000..f5e90ea
--- /dev/null
+++ b/backend/src/FinanceTracker.Domain/Repositories/IUserRepository.cs
@@ -0,0 +1,8 @@
+﻿using FinanceTracker.Domain.Entities;
+
+namespace FinanceTracker.Domain.Repositories;
+
+public interface IUserRepository
+{
+    Task<User?> GetByEmailAsync(string email);
+}
diff --git a/backend/src/FinanceTracker.Infrastructure/Extensions/ServiceCollectionExtensions.cs b/backend/src/FinanceTracker.Infrastructure/Extensions/ServiceCollectionExtensions.cs
index be59bf5..91e1d81 100644
--- a/backend/src/FinanceTracker.Infrastructure/Extensions/ServiceCollectionExtensions.cs
+++ b/backend/src/FinanceTracker.Infrastructure/Extensions/ServiceCollectionExtensions.cs
@@ -32,5 +32,6 @@ IConfiguration configuration
         services.AddScoped<ILoanRepository, LoanRepository>();
         services.AddScoped<ILoanRequestRepository, LoanRequestRepository>();
         services.AddScoped<IInstallmentRepository, InstallmentRepository>();
+        services.AddScoped<IUserRepository, UserRepository>();
     }
 }
diff --git a/backend/src/FinanceTracker.Infrastructure/Repositories/UserRepository.cs b/backend/src/FinanceTracker.Infrastructure/Repositories/UserRepository.cs
new file mode 100644
index 0000000..70a36a3
--- /dev/null
+++ b/backend/src/FinanceTracker.Infrastructure/Repositories/UserRepository.cs
@@ -0,0 +1,16 @@
+﻿using FinanceTracker.Domain.Entities;
+using FinanceTracker.Domain.Repositories;
+using FinanceTracker.Infrastructure.Persistence;
+using Microsoft.EntityFrameworkCore;
+
+namespace FinanceTracker.Infrastructure.Repositories;
+
+internal class UserRepository(FinanceTrackerDbContext dbContext) : IUserRepository
+{
+    private readonly FinanceTrackerDbContext _dbContext = dbContext;
+
+    public async Task<User?> GetByEmailAsync(string email)
+    {
+        return await _dbContext.Users.FirstOrDefaultAsync(u => u.Email == email);
+    }
+}


Reviews:
user: login: coderabbitai[bot]
body: **Actionable comments posted: 7**

<details>
<summary>📜 Review details</summary>

**Configuration used: CodeRabbit UI**
**Review profile: ASSERTIVE**
**Plan: Pro**

<details>
<summary>📥 Commits</summary>

Reviewing files that changed from the base of the PR and between 68a488186300eaad8a0c801bdc2fc139694c55fe and 8cd05a609d5bb08bb65a58b4d41791806034882a.

</details>

<details>
<summary>📒 Files selected for processing (8)</summary>

* `backend/src/FinanceTracker.Api/Controllers/UsersController.cs` (1 hunks)
* `backend/src/FinanceTracker.Application/Users/Dtos/UserInfoDto.cs` (1 hunks)
* `backend/src/FinanceTracker.Application/Users/Dtos/UserInfoProfile.cs` (1 hunks)
* `backend/src/FinanceTracker.Application/Users/Queries/GetUserInfoByEmail/GetUserInfoByEmailQuery.cs` (1 hunks)
* `backend/src/FinanceTracker.Application/Users/Queries/GetUserInfoByEmail/GetUserInfoByEmailQueryHandler.cs` (1 hunks)
* `backend/src/FinanceTracker.Domain/Repositories/IUserRepository.cs` (1 hunks)
* `backend/src/FinanceTracker.Infrastructure/Extensions/ServiceCollectionExtensions.cs` (1 hunks)
* `backend/src/FinanceTracker.Infrastructure/Repositories/UserRepository.cs` (1 hunks)

</details>

<details>
<summary>🧰 Additional context used</summary>

<details>
<summary>🧬 Code Graph Analysis (5)</summary>

<details>
<summary>backend/src/FinanceTracker.Infrastructure/Extensions/ServiceCollectionExtensions.cs (1)</summary><blockquote>

<details>
<summary>backend/src/FinanceTracker.Infrastructure/Repositories/UserRepository.cs (1)</summary>

* `UserRepository` (8-16)

</details>

</blockquote></details>
<details>
<summary>backend/src/FinanceTracker.Application/Users/Dtos/UserInfoProfile.cs (2)</summary><blockquote>

<details>
<summary>backend/src/FinanceTracker.Domain/Entities/User.cs (1)</summary>

* `User` (5-8)

</details>
<details>
<summary>backend/src/FinanceTracker.Application/Users/Dtos/UserInfoDto.cs (1)</summary>

* `UserInfoDto` (3-8)

</details>

</blockquote></details>
<details>
<summary>backend/src/FinanceTracker.Domain/Repositories/IUserRepository.cs (1)</summary><blockquote>

<details>
<summary>backend/src/FinanceTracker.Domain/Entities/User.cs (1)</summary>

* `User` (5-8)

</details>

</blockquote></details>
<details>
<summary>backend/src/FinanceTracker.Application/Users/Queries/GetUserInfoByEmail/GetUserInfoByEmailQuery.cs (1)</summary><blockquote>

<details>
<summary>backend/src/FinanceTracker.Application/Users/Dtos/UserInfoDto.cs (1)</summary>

* `UserInfoDto` (3-8)

</details>

</blockquote></details>
<details>
<summary>backend/src/FinanceTracker.Api/Controllers/UsersController.cs (4)</summary><blockquote>

<details>
<summary>backend/src/FinanceTracker.Domain/Repositories/IUserRepository.cs (1)</summary>

* `Task` (7-7)

</details>
<details>
<summary>backend/src/FinanceTracker.Application/Users/Queries/GetUserInfoByEmail/GetUserInfoByEmailQueryHandler.cs (1)</summary>

* `Task` (18-31)

</details>
<details>
<summary>backend/src/FinanceTracker.Infrastructure/Repositories/UserRepository.cs (1)</summary>

* `Task` (12-15)

</details>
<details>
<summary>backend/src/FinanceTracker.Application/Users/Queries/GetUserInfoByEmail/GetUserInfoByEmailQuery.cs (1)</summary>

* `GetUserInfoByEmailQuery` (6-9)

</details>

</blockquote></details>

</details>

</details>

<details>
<summary>⏰ Context from checks skipped due to timeout of 90000ms (1)</summary>

* GitHub Check: Build and Analyze

</details>

<details>
<summary>🔇 Additional comments (2)</summary><blockquote>

<details>
<summary>backend/src/FinanceTracker.Infrastructure/Extensions/ServiceCollectionExtensions.cs (1)</summary>

`35-35`: **DEPENDENCY REGISTRATION: SUCCESSFULLY INTEGRATED**

SCANNING DEPENDENCY INJECTION CONFIGURATION... Registration of `IUserRepository` with concrete implementation `UserRepository` as scoped service aligns with existing repository registration pattern.

ANALYSIS COMPLETE: Registration will correctly provide repository instance to all dependent components including query handlers.

</details>
<details>
<summary>backend/src/FinanceTracker.Application/Users/Dtos/UserInfoDto.cs (1)</summary>

`1-8`: **INITIALIZING ANALYSIS OF DTO STRUCTURE.**

DETECTING: Simple data transfer object designed for user information transmission across system layers. Properties correctly initialized with non-null markers. Structure conforms to standard DTO patterns.

SYNTAX VALIDATION: Complete. No anomalies detected.

</details>

</blockquote></details>

</details>

<!-- This is an auto-generated comment by CodeRabbit for review status -->
state: COMMENTED
author_association: NONE
submitted_at: 2025-04-29T02:27:05Z

Review comments:
diff_hunk: @@ -0,0 +1,8 @@
+﻿using FinanceTracker.Domain.Entities;
+
+namespace FinanceTracker.Domain.Repositories;
+
+public interface IUserRepository
+{
+    Task<User?> GetByEmailAsync(string email);
+}
path: backend/src/FinanceTracker.Domain/Repositories/IUserRepository.cs
user: login: coderabbitai[bot]
body: _🧹 Nitpick (assertive)_

**INTERFACE DESIGN: OPTIMAL CONFIGURATION DETECTED**

ANALYZING REPOSITORY INTERFACE... Interface structure follows domain-driven design principles. Method signature `GetByEmailAsync` properly utilizes Task-based asynchronous pattern with nullable return type for null-case handling.

RECOMMENDATION: ADD XML DOCUMENTATION TO ENHANCE DEVELOPER EXPERIENCE.

```diff
 public interface IUserRepository
 {
+    /// <summary>
+    /// Retrieves a user by their email address.
+    /// </summary>
+    /// <param name="email">The email address of the user to retrieve</param>
+    /// <returns>The user if found; otherwise, null</returns>
     Task<User?> GetByEmailAsync(string email);
 }
```

<details>
<summary>🤖 Prompt for AI Agents (early access)</summary>

```
In backend/src/FinanceTracker.Domain/Repositories/IUserRepository.cs around lines 5 to 8, the interface IUserRepository lacks XML documentation. Add XML comments above the interface declaration and the GetByEmailAsync method to describe their purpose and behavior, improving code readability and developer experience.
```

</details>

<!-- This is an auto-generated comment by CodeRabbit -->
created_at: 2025-04-29T02:27:04Z
author_association: NONE
diff_hunk: @@ -0,0 +1,9 @@
+﻿using FinanceTracker.Application.Users.Dtos;
+using MediatR;
+
+namespace FinanceTracker.Application.Users.Queries.GetUserInfoByEmail;
+
+public class GetUserInfoByEmailQuery : IRequest<UserInfoDto>
+{
+    public string Email { get; set; } = default!;
+}
path: backend/src/FinanceTracker.Application/Users/Queries/GetUserInfoByEmail/GetUserInfoByEmailQuery.cs
user: login: coderabbitai[bot]
body: _🧹 Nitpick (assertive)_

**QUERY OBJECT STRUCTURE: ACCEPTABLE**

ANALYZING QUERY CLASS... Class correctly implements `IRequest<UserInfoDto>` interface from MediatR pattern. Single property `Email` appropriately configured with non-null default assignment.

RECOMMENDATION: ADD INPUT VALIDATION ANNOTATION TO ENFORCE EMAIL FORMAT CONSTRAINTS.

```diff
 public class GetUserInfoByEmailQuery : IRequest<UserInfoDto>
 {
+    [Required]
+    [EmailAddress]
     public string Email { get; set; } = default!;
 }
```

SUGGESTION REQUIRES ADDING NAMESPACE: `using System.ComponentModel.DataAnnotations;`




<!-- suggestion_start -->

<details>
<summary>📝 Committable suggestion</summary>

> ‼️ **IMPORTANT**
> Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

`````suggestion
using System.ComponentModel.DataAnnotations;

public class GetUserInfoByEmailQuery : IRequest<UserInfoDto>
{
    [Required]
    [EmailAddress]
    public string Email { get; set; } = default!;
}
`````

</details>

<!-- suggestion_end -->

<details>
<summary>🤖 Prompt for AI Agents (early access)</summary>

```
In backend/src/FinanceTracker.Application/Users/Queries/GetUserInfoByEmail/GetUserInfoByEmailQuery.cs around lines 6 to 9, the Email property lacks validation attributes to enforce proper email format. Add the [EmailAddress] data annotation attribute to the Email property and include the namespace using System.ComponentModel.DataAnnotations; at the top of the file to enable this validation.
```

</details>

<!-- This is an auto-generated comment by CodeRabbit -->
created_at: 2025-04-29T02:27:04Z
author_association: NONE
diff_hunk: @@ -0,0 +1,11 @@
+﻿using FinanceTracker.Domain.Entities;
+
+namespace FinanceTracker.Application.Users.Dtos;
+
+public class UserInfoProfile : AutoMapper.Profile
+{
+    public UserInfoProfile()
+    {
+        CreateMap<User, UserInfoDto>();
+    }
+}
path: backend/src/FinanceTracker.Application/Users/Dtos/UserInfoProfile.cs
user: login: coderabbitai[bot]
body: _🧹 Nitpick (assertive)_

**AUTOMAPPER PROFILE: CONFIGURATION VERIFIED**

ANALYZING MAPPING PROFILE... Profile correctly inherits from AutoMapper.Profile base class. Basic mapping from `User` domain entity to `UserInfoDto` is established.

OBSERVATION: MAPPING LACKS REGISTRATION DATE PROPERTY TRANSFER.

```diff
 public class UserInfoProfile : AutoMapper.Profile
 {
     public UserInfoProfile()
     {
-        CreateMap<User, UserInfoDto>();
+        CreateMap<User, UserInfoDto>()
+            .ForMember(dest => dest.RegisteredAt, 
+                       opt => opt.MapFrom(src => src.RegisteredAt));
     }
 }
```

NOTE: ABOVE SUGGESTION REQUIRES ADDING `RegisteredAt` PROPERTY TO `UserInfoDto` CLASS.




<!-- suggestion_start -->

<details>
<summary>📝 Committable suggestion</summary>

> ‼️ **IMPORTANT**
> Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

`````suggestion
public class UserInfoProfile : AutoMapper.Profile
{
    public UserInfoProfile()
    {
        CreateMap<User, UserInfoDto>()
            .ForMember(dest => dest.RegisteredAt,
                       opt => opt.MapFrom(src => src.RegisteredAt));
    }
}
`````

</details>

<!-- suggestion_end -->

<details>
<summary>🤖 Prompt for AI Agents (early access)</summary>

```
In backend/src/FinanceTracker.Application/Users/Dtos/UserInfoProfile.cs around lines 5 to 11, the AutoMapper profile maps User to UserInfoDto but does not include the RegisteredAt property. To fix this, update the mapping configuration to explicitly map the RegisteredAt property from User to UserInfoDto. Also, ensure the UserInfoDto class has a RegisteredAt property defined to receive this value.
```

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<!-- This is an auto-generated comment by CodeRabbit -->
created_at: 2025-04-29T02:27:04Z
author_association: NONE
diff_hunk: @@ -0,0 +1,16 @@
+﻿using FinanceTracker.Domain.Entities;
+using FinanceTracker.Domain.Repositories;
+using FinanceTracker.Infrastructure.Persistence;
+using Microsoft.EntityFrameworkCore;
+
+namespace FinanceTracker.Infrastructure.Repositories;
+
+internal class UserRepository(FinanceTrackerDbContext dbContext) : IUserRepository
+{
+    private readonly FinanceTrackerDbContext _dbContext = dbContext;
+
+    public async Task<User?> GetByEmailAsync(string email)
+    {
+        return await _dbContext.Users.FirstOrDefaultAsync(u => u.Email == email);
+    }
path: backend/src/FinanceTracker.Infrastructure/Repositories/UserRepository.cs
user: login: coderabbitai[bot]
body: _🧹 Nitpick (assertive)_

**INPUT VALIDATION SUBROUTINE NOT DETECTED.**

RECOMMENDATION: Add input validation check for email parameter before database query execution. Null or empty email strings should be processed before database interaction occurs.

```diff
public async Task<User?> GetByEmailAsync(string email)
{
+    if (string.IsNullOrWhiteSpace(email))
+    {
+        return null;
+    }
    return await _dbContext.Users.FirstOrDefaultAsync(u => u.Email == email);
}
```



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<details>
<summary>📝 Committable suggestion</summary>

> ‼️ **IMPORTANT**
> Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

`````suggestion
    public async Task<User?> GetByEmailAsync(string email)
    {
        if (string.IsNullOrWhiteSpace(email))
        {
            return null;
        }
        return await _dbContext.Users.FirstOrDefaultAsync(u => u.Email == email);
    }
`````

</details>

<!-- suggestion_end -->

<details>
<summary>🤖 Prompt for AI Agents (early access)</summary>

```
In backend/src/FinanceTracker.Infrastructure/Repositories/UserRepository.cs around lines 12 to 15, the GetByEmailAsync method lacks input validation for the email parameter. Add a check at the start of the method to verify if the email is null or empty, and if so, return null immediately to avoid unnecessary database queries and potential errors.
```

</details>

<!-- This is an auto-generated comment by CodeRabbit -->
created_at: 2025-04-29T02:27:04Z
author_association: NONE
diff_hunk: @@ -0,0 +1,19 @@
+﻿using FinanceTracker.Application.Users.Queries.GetUserInfoByEmail;
+using MediatR;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+
+namespace FinanceTracker.Api.Controllers;
+
+[ApiController]
+[Route("api/[controller]")]
+[Authorize]
+public class UsersController(IMediator mediator) : ControllerBase
+{
+    [HttpGet("{email}")]
+    public async Task<IActionResult> GetUserInfoByEmail([FromRoute] string email)
+    {
+        var result = await mediator.Send(new GetUserInfoByEmailQuery { Email = email });
+        return Ok(result);
+    }
path: backend/src/FinanceTracker.Api/Controllers/UsersController.cs
user: login: coderabbitai[bot]
body: _🛠️ Refactor suggestion_

**ROUTE PARAMETER VALIDATION MISSING.**

ANALYSIS: Controller endpoint lacks input validation for email parameter. Email format validation recommended at API boundary.

```diff
[HttpGet("{email}")]
public async Task<IActionResult> GetUserInfoByEmail([FromRoute] string email)
{
+    if (string.IsNullOrWhiteSpace(email) || !IsValidEmailFormat(email))
+    {
+        return BadRequest("INVALID EMAIL FORMAT DETECTED");
+    }
    var result = await mediator.Send(new GetUserInfoByEmailQuery { Email = email });
    return Ok(result);
}

+private static bool IsValidEmailFormat(string email)
+{
+    try
+    {
+        var addr = new System.Net.Mail.MailAddress(email);
+        return addr.Address == email;
+    }
+    catch
+    {
+        return false;
+    }
+}
```



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<details>
<summary>📝 Committable suggestion</summary>

> ‼️ **IMPORTANT**
> Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

`````suggestion
    [HttpGet("{email}")]
    public async Task<IActionResult> GetUserInfoByEmail([FromRoute] string email)
    {
        if (string.IsNullOrWhiteSpace(email) || !IsValidEmailFormat(email))
        {
            return BadRequest("INVALID EMAIL FORMAT DETECTED");
        }

        var result = await mediator.Send(new GetUserInfoByEmailQuery { Email = email });
        return Ok(result);
    }

    private static bool IsValidEmailFormat(string email)
    {
        try
        {
            var addr = new System.Net.Mail.MailAddress(email);
            return addr.Address == email;
        }
        catch
        {
            return false;
        }
    }
`````

</details>

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<details>
<summary>🤖 Prompt for AI Agents (early access)</summary>

```
In backend/src/FinanceTracker.Api/Controllers/UsersController.cs around lines 13 to 18, the GetUserInfoByEmail endpoint does not validate the email route parameter. Add validation to ensure the email parameter conforms to a valid email format before processing the request. This can be done by applying a validation attribute or manually checking the format at the start of the method and returning a bad request response if invalid.
```

</details>

<!-- This is an auto-generated comment by CodeRabbit -->
created_at: 2025-04-29T02:27:05Z
author_association: NONE
diff_hunk: @@ -0,0 +1,32 @@
+﻿using AutoMapper;
+using FinanceTracker.Application.Users.Dtos;
+using FinanceTracker.Domain.Entities;
+using FinanceTracker.Domain.Exceptions;
+using FinanceTracker.Domain.Repositories;
+using MediatR;
+using Microsoft.Extensions.Logging;
+
+namespace FinanceTracker.Application.Users.Queries.GetUserInfoByEmail;
+
+public class GetUserInfoByEmailQueryHandler(
+    ILogger<GetUserInfoByEmailQueryHandler> logger,
+    IUserContext userContext,
+    IUserRepository userRepo,
+    IMapper mapper
+) : IRequestHandler<GetUserInfoByEmailQuery, UserInfoDto>
+{
+    public async Task<UserInfoDto> Handle(
+        GetUserInfoByEmailQuery request,
+        CancellationToken cancellationToken
+    )
+    {
+        var reqUser = userContext.GetUser() ?? throw new ForbiddenException();
+        logger.LogInformation("{@ru} requested:\n{@r}", reqUser, request);
path: backend/src/FinanceTracker.Application/Users/Queries/GetUserInfoByEmail/GetUserInfoByEmailQueryHandler.cs
user: login: coderabbitai[bot]
body: _🛠️ Refactor suggestion_

**LOGGING SENSITIVITY ALERT.**

WARNING: Logging entire request object may expose sensitive information in production environments.

```diff
- logger.LogInformation("{@ru} requested:\n{@r}", reqUser, request);
+ logger.LogInformation("{@ru} requested user info for email: {email}", reqUser, request.Email);
```



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<details>
<summary>📝 Committable suggestion</summary>

> ‼️ **IMPORTANT**
> Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

`````suggestion
        logger.LogInformation("{@ru} requested user info for email: {email}", reqUser, request.Email);
`````

</details>

<!-- suggestion_end -->

<details>
<summary>🤖 Prompt for AI Agents (early access)</summary>

```
In backend/src/FinanceTracker.Application/Users/Queries/GetUserInfoByEmail/GetUserInfoByEmailQueryHandler.cs at line 24, avoid logging the entire request object as it may contain sensitive information. Instead, log only non-sensitive, necessary fields from the request or sanitize the data before logging to prevent exposure of confidential user details in production environments.
```

</details>

<!-- This is an auto-generated comment by CodeRabbit -->
created_at: 2025-04-29T02:27:05Z
author_association: NONE
diff_hunk: @@ -0,0 +1,32 @@
+﻿using AutoMapper;
+using FinanceTracker.Application.Users.Dtos;
+using FinanceTracker.Domain.Entities;
+using FinanceTracker.Domain.Exceptions;
+using FinanceTracker.Domain.Repositories;
+using MediatR;
+using Microsoft.Extensions.Logging;
+
+namespace FinanceTracker.Application.Users.Queries.GetUserInfoByEmail;
+
+public class GetUserInfoByEmailQueryHandler(
+    ILogger<GetUserInfoByEmailQueryHandler> logger,
+    IUserContext userContext,
+    IUserRepository userRepo,
+    IMapper mapper
+) : IRequestHandler<GetUserInfoByEmailQuery, UserInfoDto>
+{
+    public async Task<UserInfoDto> Handle(
+        GetUserInfoByEmailQuery request,
+        CancellationToken cancellationToken
+    )
+    {
+        var reqUser = userContext.GetUser() ?? throw new ForbiddenException();
+        logger.LogInformation("{@ru} requested:\n{@r}", reqUser, request);
+
+        var user =
+            await userRepo.GetByEmailAsync(request.Email)
+            ?? throw new NotFoundException(nameof(User), request.Email);
+
+        return mapper.Map<UserInfoDto>(user);
+    }
path: backend/src/FinanceTracker.Application/Users/Queries/GetUserInfoByEmail/GetUserInfoByEmailQueryHandler.cs
user: login: coderabbitai[bot]
body: _🧹 Nitpick (assertive)_

**SECURITY AND LOGGING PROTOCOL: ACCEPTABLE.**

ANALYSIS: Handler implements proper authorization check and logging. Error handling follows domain exception patterns.

SUGGESTION: Consider implementing cancellation token usage for database query to respect request cancellation.

```diff
var user =
-    await userRepo.GetByEmailAsync(request.Email)
+    await userRepo.GetByEmailAsync(request.Email, cancellationToken)
    ?? throw new NotFoundException(nameof(User), request.Email);
```

RECOMMENDED ACTION: Update IUserRepository interface and implementation to support cancellation token propagation.



> Committable suggestion skipped: line range outside the PR's diff.

<details>
<summary>🤖 Prompt for AI Agents (early access)</summary>

```
In backend/src/FinanceTracker.Application/Users/Queries/GetUserInfoByEmail/GetUserInfoByEmailQueryHandler.cs around lines 18 to 31, the Handle method does not pass the cancellationToken to the userRepo.GetByEmailAsync call. To fix this, update the IUserRepository interface and its implementation to accept a CancellationToken parameter in GetByEmailAsync, then pass the cancellationToken from the handler method to the repository call to enable proper cancellation support.
```

</details>

<!-- This is an auto-generated comment by CodeRabbit -->
created_at: 2025-04-29T02:27:05Z
author_association: NONE

PR comments:
user: login: coderabbitai[bot]
created_at: 2025-04-29T02:23:44Z
body: <!-- This is an auto-generated comment: summarize by coderabbit.ai -->
<!-- walkthrough_start -->

<details>
<summary>📝 Walkthrough</summary>

## Summary by CodeRabbit

- **New Features**
  - Added an endpoint to retrieve user information by email address.
  - User information now includes ID, email, and username details.
- **Bug Fixes**
  - None.
- **Documentation**
  - None.
- **Refactor**
  - None.
- **Style**
  - None.
- **Tests**
  - None.
- **Chores**
  - None.
- **Revert**
  - None.
## Walkthrough

Beep boop. This update introduces a new feature for retrieving user information by email in the FinanceTracker system. It adds a new API endpoint, supporting data transfer objects, query and handler logic, domain repository abstraction, and its concrete implementation. Dependency injection is updated to register the new user repository. The flow uses MediatR for decoupled request handling and AutoMapper for mapping between domain entities and DTOs. Authorization and error handling are enforced at the application layer. All new components are organized within their respective architectural layers. End of summary. Boop.

## Changes

| File(s)                                                                                                  | Change Summary                                                                                                    |
|----------------------------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------|
| `.../Controllers/UsersController.cs`                                                                     | Added new API controller for user info retrieval by email, using MediatR and authorization.                      |
| `.../Users/Dtos/UserInfoDto.cs`, `.../Users/Dtos/UserInfoProfile.cs`                                     | Introduced DTO for user info and AutoMapper profile for mapping from User entity.                                |
| `.../Users/Queries/GetUserInfoByEmail/GetUserInfoByEmailQuery.cs`,<br>`.../GetUserInfoByEmailQueryHandler.cs` | Added MediatR query and handler for fetching user info by email, with authorization and error handling logic.    |
| `.../Repositories/IUserRepository.cs`, `.../Repositories/UserRepository.cs`                              | Introduced user repository interface and its implementation for fetching users by email from the database.        |
| `.../Extensions/ServiceCollectionExtensions.cs`                                                          | Registered `IUserRepository` and `UserRepository` with dependency injection as scoped services.                  |

## Sequence Diagram(s)

```mermaid
sequenceDiagram
    participant Client
    participant UsersController
    participant Mediator
    participant GetUserInfoByEmailQueryHandler
    participant UserRepository
    participant DbContext

    Client->>UsersController: GET /api/users/{email}
    UsersController->>Mediator: Send GetUserInfoByEmailQuery(email)
    Mediator->>GetUserInfoByEmailQueryHandler: Handle(query)
    GetUserInfoByEmailQueryHandler->>UserRepository: GetByEmailAsync(email)
    UserRepository->>DbContext: Query Users by email
    DbContext-->>UserRepository: User entity or null
    UserRepository-->>GetUserInfoByEmailQueryHandler: User entity or null
    GetUserInfoByEmailQueryHandler-->>Mediator: UserInfoDto or error
    Mediator-->>UsersController: UserInfoDto or error
    UsersController-->>Client: 200 OK with UserInfoDto or error response
```

## Poem

> 010101, a feature’s born,  
> Fetch user by email, no need to mourn!  
> Controllers and DTOs, all in a row,  
> MediatR and mapping, data will flow.  
> Repository plugged in, database in sight,  
> FinanceTracker upgraded—beep boop, delight!  
> 🚀🤖

</details>

<!-- walkthrough_end -->
<!-- internal state start -->


<!-- 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author_association: NONE
user: login: sonarqubecloud[bot]
created_at: 2025-04-29T02:25:24Z
body: ## [![Quality Gate Failed](https://sonarsource.github.io/sonarcloud-github-static-resources/v2/checks/QualityGateBadge/qg-failed-20px.png 'Quality Gate Failed')](https://sonarcloud.io/dashboard?id=Learnathon-By-Geeky-Solutions_procastinators&pullRequest=62) **Quality Gate failed**  
Failed conditions  
![](https://sonarsource.github.io/sonarcloud-github-static-resources/v2/common/failed-16px.png '') [3.0% Coverage on New Code](https://sonarcloud.io/component_measures?id=Learnathon-By-Geeky-Solutions_procastinators&pullRequest=62&metric=new_coverage&view=list) (required ≥ 80%)  
  
[See analysis details on SonarQube Cloud](https://sonarcloud.io/dashboard?id=Learnathon-By-Geeky-Solutions_procastinators&pullRequest=62)


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