package errors

import (
	"net/http"

	"github.com/gin-gonic/gin"

	"edge-infra.dev/pkg/edge/iam/log"
)

type EsodError struct{}

func NewEsodError(router *gin.Engine) *EsodError {
	es := &EsodError{}
	router.GET("/esod-metadata", es.EsodMetadata)
	return es
}

func (es *EsodError) EsodMetadata(ctx *gin.Context) {
	log := log.Get(ctx.Request.Context())
	reason := ctx.Query("reason")
	log.Info("esod was called", "reason", reason)
	metadata := NewEsodMetadata()

	switch reason {
	case "", "unknown":
		// just use the default metadata...
	case "invalid_session":
		metadata.
			WithReason("invalid_session").
			WithSubtitle("Invalid Session").
			WithMessage("We couldn't work with your login session. Please close this window and login again to continue.").
			WithInfo("could not find required information in the session")
	case "session_expired":
		metadata.
			WithReason("session_expired").
			WithSubtitle("Session Expired").
			WithMessage("Sorry, your session has probably expired. We can't continue without it. Please close this window and login again to continue.")
	case "invalid_continuation":
		metadata.
			WithReason("invalid_continuation").
			WithSubtitle("Invalid Session").
			WithMessage("We couldn't work with your login session. Please close this window and login again to continue.").
			WithInfo("we couldn't find a valid continuation in your session")
	case "invalid_request_url":
		metadata.
			WithReason("invalid_request_url").
			WithSubtitle("Invalid Session").
			WithMessage("We couldn't work with your login session. Please close this window and login again to continue.").
			WithInfo("we couldn't find a valid request URL in your session")
	case "invalid_hint":
		metadata.
			WithReason("invalid_hint").
			WithSubtitle("Invalid login hint").
			WithInfo("we couldn't validate the supplied login hint")
	case "invalid_client":
		metadata.
			WithReason("invalid_client").
			WithSubtitle("Invalid client id").
			WithInfo("we did not send the login hint to this client id")
	case "inactive_hint":
		metadata.
			WithReason("inactive_hint").
			WithSubtitle("Invalid Session").
			WithMessage("Login hint already used. Please close this window and login again to continue.").
			WithInfo("the supplied login hint is not active since it was already used")
	case "offline_with_control_plane":
		metadata.
			WithReason("offline_with_control_plane").
			WithSubtitle("Temporarily offline").
			WithMessage("The requested feature is not supported while offline. Please close this window and try again later.").
			WithInfo("some features like printing barcodes are supported only while online")
	case "invalid_auth_request":
		metadata.
			WithReason("invalid_auth_request").
			WithSubtitle("Invalid login request").
			WithMessage("Either the clientID or any of the other required params aren't matching with pre-configured details for the client").
			WithInfo("Invalid authorization request, the request is malformed, or do not match the expected criteria for the given client")
	case "invalid_auth_response":
		metadata.
			WithReason("invalid_auth_response").
			WithSubtitle("Invalid response type").
			WithMessage("The response request do not match the pre-configured types for the client").
			WithInfo("Invalid authorization response, the request does not match the expected criteria for the given client i.e., response mode or response type")
	default:
		// just use the default metadata...
	}

	ctx.JSON(http.StatusOK, &metadata)
}