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feat: async task: send verification email on user sign up
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,29 @@ | ||
| package db | ||
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| import "context" | ||
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| type CreateUserTxParams struct { | ||
| CreateUserParams | ||
| AfterCreate func(user User) error | ||
| } | ||
|
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| type CreateUserTxResult struct { | ||
| User User | ||
| } | ||
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| func (store *SQLStore) CreateUserTx(ctx context.Context, arg CreateUserTxParams) (CreateUserTxResult, error) { | ||
| var result CreateUserTxResult | ||
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| err := store.execTx(ctx, func(q *Queries) error { | ||
| var err error | ||
|
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| result.User, err = q.CreateUser(ctx, arg.CreateUserParams) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
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| return arg.AfterCreate(result.User) | ||
| }) | ||
|
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| return result, err | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,87 @@ | ||
| package db | ||
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| import "context" | ||
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| // TransferTxParams contains all input parameters of the transfer transaction | ||
| type TransferTxParams struct { | ||
| FromAccountID int64 `json:from_account_id` | ||
| ToAccountID int64 `json:to_account_id` | ||
| Amount int64 `json:amount` | ||
| } | ||
|
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| // TransferTxResult is the result of the transfer transaction | ||
| type TransferTxResult struct { | ||
| Transfer Transfer `json:transfer` | ||
| FromAccount Account `json:from_account` | ||
| ToAccount Account `json:to_account` | ||
| FromEntry Entry `json:from_entry` | ||
| ToEntry Entry `json:to_entry` | ||
| } | ||
|
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| // TransferTx performs a money transfer from one account to the other | ||
| // It creates a transfer record, add account entries, and update accounts' balance within a single DB transaction | ||
| func (store *SQLStore) TransferTx(ctx context.Context, arg TransferTxParams) (TransferTxResult, error) { | ||
| var result TransferTxResult | ||
|
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| err := store.execTx(ctx, func(q *Queries) error { | ||
| var err error | ||
|
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| result.Transfer, err = q.CreateTransfer(ctx, CreateTransferParams{ | ||
| FromAccountID: arg.FromAccountID, | ||
| ToAccountID: arg.ToAccountID, | ||
| Amount: arg.Amount, | ||
| }) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
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| result.FromEntry, err = q.CreateEntry(ctx, CreateEntryParams{ | ||
| AccountID: arg.FromAccountID, | ||
| Amount: -arg.Amount, | ||
| }) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
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| result.ToEntry, err = q.CreateEntry(ctx, CreateEntryParams{ | ||
| AccountID: arg.ToAccountID, | ||
| Amount: arg.Amount, | ||
| }) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
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| if arg.FromAccountID < arg.ToAccountID { | ||
| result.FromAccount, result.ToAccount, err = addMoney(ctx, q, arg.FromAccountID, -arg.Amount, arg.ToAccountID, arg.Amount) | ||
| } else { | ||
| result.ToAccount, result.FromAccount, err = addMoney(ctx, q, arg.ToAccountID, arg.Amount, arg.FromAccountID, -arg.Amount) | ||
| } | ||
|
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| return nil | ||
| }) | ||
|
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| return result, err | ||
| } | ||
|
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| func addMoney( | ||
| ctx context.Context, | ||
| q *Queries, | ||
| accountID1 int64, | ||
| amount1 int64, | ||
| accountID2 int64, | ||
| amount2 int64, | ||
| ) (account1 Account, account2 Account, err error) { | ||
| account1, err = q.AddAccountBalance(ctx, AddAccountBalanceParams{ | ||
| ID: accountID1, | ||
| Amount: amount1, | ||
| }) | ||
| if err != nil { | ||
| return | ||
| } | ||
|
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| account2, err = q.AddAccountBalance(ctx, AddAccountBalanceParams{ | ||
| ID: accountID2, | ||
| Amount: amount2, | ||
| }) | ||
| return | ||
| } |
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