mirror of
https://github.com/aaronpo97/the-biergarten-app.git
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92 lines
3.0 KiB
Plaintext
92 lines
3.0 KiB
Plaintext
@startuml delete-account
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!include ../../../pipeline/diagrams/biergarten-weizen-theme.puml
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skinparam sequenceMessageAlign center
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skinparam maxMessageSize 200
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title User Authentication Flow - Delete Account
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actor User
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participant "API\nController" as API
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participant "MediatR pipeline\n(ValidationBehavior)" as Mediator
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box "Handler Layer" #F1F3EA
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participant "DeleteAccountHandler" as DeleteAccountHandler
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participant "UserManager<ApplicationUser>" as UserMgr
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end box
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box "Repository / Cross-slice" #DBEEDD
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participant "DapperUserStore\n(IUserStore/IUserPasswordStore/\nIUserEmailStore)" as UserStore
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end box
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database "SQL Server" as DB
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note over UserMgr
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ASP.NET Core Identity's UserManager<TUser>
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replaces the deleted AuthRepository: handlers
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no longer issue SQL or call Argon2 directly,
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they delegate to UserManager, which in turn
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calls DapperUserStore (persistence) and
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Argon2PasswordHasher (IPasswordHasher<TUser>).
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end note
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User -> API: DELETE /api/auth/account\n(requires Bearer access token)
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activate API
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API -> Mediator: Send(DeleteAccountCommand(\n GetAuthenticatedUserId()))
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activate Mediator
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Mediator -> DeleteAccountHandler: Handle(command)
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activate DeleteAccountHandler
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DeleteAccountHandler -> UserMgr: FindByIdAsync(userAccountId)
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activate UserMgr
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UserMgr -> UserStore: FindByIdAsync(userAccountId)
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UserStore --> UserMgr: ApplicationUser or null
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UserMgr --> DeleteAccountHandler: ApplicationUser or null
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deactivate UserMgr
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alt Account not found
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DeleteAccountHandler -> Mediator: throw NotFoundException
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Mediator -> API: propagate
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API -> User: 404 Not Found
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else Account found
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DeleteAccountHandler -> UserMgr: DeleteAsync(user)
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activate UserMgr
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UserMgr -> UserStore: DeleteAsync(user)
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activate UserStore
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UserStore -> DB: DELETE FROM dbo.UserAccount\nWHERE UserAccountID = @Id
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note right of UserStore
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UserCredential/UserVerification/UserAvatar
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cascade on delete. Posts, comments, photos,
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and follows use ON DELETE NO ACTION - if any
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reference this account, the DELETE throws a
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foreign key violation (SQL error 547).
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end note
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alt Foreign key violation (dependent records exist)
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UserStore --> UserMgr: IdentityResult.Failed\n(AccountHasDependentRecords)
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else Delete succeeds
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UserStore --> UserMgr: IdentityResult.Success
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end
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deactivate UserStore
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UserMgr --> DeleteAccountHandler: IdentityResult
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deactivate UserMgr
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alt Account has dependent records
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DeleteAccountHandler -> Mediator: throw ConflictException\n"Account cannot be deleted while it still\nhas associated posts, comments, photos,\nor follows."
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Mediator -> API: propagate
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API -> User: 409 Conflict
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else !result.Succeeded (other failure)
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DeleteAccountHandler -> Mediator: throw ConflictException
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Mediator -> API: propagate
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API -> User: 409 Conflict
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else result.Succeeded
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DeleteAccountHandler --> Mediator: (void)
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deactivate DeleteAccountHandler
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Mediator --> API: (void)
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deactivate Mediator
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API -> User: 200 OK\n{message: "Account deleted successfully."}
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end
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end
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deactivate API
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@enduml
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