package keydbextension

import (
	"encoding/json"
	"fmt"
	"net/http"
	"sync"
)

const (
	ErrNoAuthToken     = "ErrNoAuthToken"
	ErrUnauthorized    = "ErrUnauthorized"
	ErrIncompleteReq   = "ErrIncompleteReq"
	ErrConnFailed      = "ErrConnFailed"
	ErrReqNotProcessed = "ErrReqNotProcessed"
	ErrUnknown         = "ErrUnknown"
)

var (
	errorResponses     map[string][]byte
	errorStatusCodes   map[string]int
	errorResponsesOnce sync.Once
)

func initErrorResponses() {
	errorResponses = make(map[string][]byte)
	errorStatusCodes = make(map[string]int)

	errors := []struct {
		key     string
		code    int
		message string
	}{
		{ErrNoAuthToken, http.StatusUnauthorized, "No auth token provided"},
		{ErrUnauthorized, http.StatusForbidden, "Unauthorized access"},
		{ErrIncompleteReq, http.StatusBadRequest, "Request was incomplete"},
		{ErrConnFailed, 523, "Connection to GuardianPT failed"},
		{ErrReqNotProcessed, 522, "Request could not be processed"},
		{ErrUnknown, 520, "An unknown error occurred"},
	}

	for _, err := range errors {
		error_code := fmt.Sprintf("0x%08X", 0xC0043293+err.code)
		response, _ := json.Marshal(map[string]interface{}{
			"error":   true,
			"code":    error_code,
			"message": err.message,
		})
		errorResponses[err.key] = response
		errorStatusCodes[err.key] = err.code
	}
}

func getHTTPStatusCode(key string) int {
	errorResponsesOnce.Do(initErrorResponses)
	return errorStatusCodes[key]
}