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jwtmiddleware.go
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/
jwtmiddleware.go
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package jwtmiddleware
import (
"context"
"log"
"os"
"github.com/aws/aws-lambda-go/events"
"github.com/joho/godotenv"
"github.com/noobj/jwtmiddleware/internal/helper"
"github.com/noobj/jwtmiddleware/types"
)
// Handle will extract the payload from cookie named access_token.
// It then pass the payload to the payloadHandler you assign.
// Finally, it calls and returns the result of the handler you define.
func Handle[T types.ApiRequest, R types.ApiResponse](f types.HandlerFunc[T, R], payloadHandler func(context.Context, interface{}) (context.Context, error)) types.HandlerFunc[T, R] {
return func(ctx context.Context, r T) (R, error) {
v2Request, ok := any(r).(events.APIGatewayV2HTTPRequest)
if !ok {
return helper.GenerateErrorResponse[R](401)
}
cookiesMap := helper.ParseCookie(v2Request.Cookies)
if _, ok := cookiesMap["access_token"]; !ok {
return helper.GenerateErrorResponse[R](401)
}
if err := godotenv.Load(); err != nil {
log.Println("No .env file found", err)
}
key := os.Getenv("ACCESS_TOKEN_SECRET")
payload, err := helper.ExtractPayloadFromToken(key, cookiesMap["access_token"])
if err != nil {
return helper.GenerateErrorResponse[R](401)
}
ctx, err = payloadHandler(ctx, payload)
if err != nil {
return helper.GenerateErrorResponse[R](401)
}
return f(ctx, any(v2Request).(T))
}
}