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// GoToSocial
// Copyright (C) GoToSocial Authors admin@gotosocial.org
// SPDX-License-Identifier: AGPL-3.0-or-later
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package util
import (
"fmt"
"strconv"
"github.com/superseriousbusiness/gotosocial/internal/gtserror"
)
const (
/* Common keys */
IDKey = "id"
LimitKey = "limit"
LocalKey = "local"
MaxIDKey = "max_id"
MinIDKey = "min_id"
/* Search keys */
SearchExcludeUnreviewedKey = "exclude_unreviewed"
SearchFollowingKey = "following"
SearchLookupKey = "acct"
SearchOffsetKey = "offset"
SearchQueryKey = "q"
SearchResolveKey = "resolve"
SearchTypeKey = "type"
/* Web endpoint keys */
WebUsernameKey = "username"
WebStatusIDKey = "status"
/* Domain block keys */
DomainBlockExportKey = "export"
DomainBlockImportKey = "import"
)
// parseError returns gtserror.WithCode set to 400 Bad Request, to indicate
// to the caller that a key was set to a value that could not be parsed.
func parseError(key string, value, defaultValue any, err error) gtserror.WithCode {
err = fmt.Errorf("error parsing key %s with value %s as %T: %w", key, value, defaultValue, err)
return gtserror.NewErrorBadRequest(err, err.Error())
}
// requiredError returns gtserror.WithCode set to 400 Bad Request, to indicate
// to the caller a required key value was not provided, or was empty.
func requiredError(key string) gtserror.WithCode {
err := fmt.Errorf("required key %s was not set or had empty value", key)
return gtserror.NewErrorBadRequest(err, err.Error())
}
/*
Parse functions for *OPTIONAL* parameters with default values.
*/
func ParseLimit(value string, defaultValue int, max, min int) (int, gtserror.WithCode) {
i, err := parseInt(value, defaultValue, max, min, LimitKey)
if err != nil {
return 0, err
} else if i == 0 {
// treat 0 as an empty query
return defaultValue, nil
}
return i, nil
}
func ParseLocal(value string, defaultValue bool) (bool, gtserror.WithCode) {
return parseBool(value, defaultValue, LocalKey)
}
func ParseMaxID(value string, defaultValue string) string {
if value == "" {
return defaultValue
}
return value
}
func ParseSearchExcludeUnreviewed(value string, defaultValue bool) (bool, gtserror.WithCode) {
return parseBool(value, defaultValue, SearchExcludeUnreviewedKey)
}
func ParseSearchFollowing(value string, defaultValue bool) (bool, gtserror.WithCode) {
return parseBool(value, defaultValue, SearchFollowingKey)
}
func ParseSearchOffset(value string, defaultValue int, max, min int) (int, gtserror.WithCode) {
return parseInt(value, defaultValue, max, min, SearchOffsetKey)
}
func ParseSearchResolve(value string, defaultValue bool) (bool, gtserror.WithCode) {
return parseBool(value, defaultValue, SearchResolveKey)
}
func ParseDomainBlockExport(value string, defaultValue bool) (bool, gtserror.WithCode) {
return parseBool(value, defaultValue, DomainBlockExportKey)
}
func ParseDomainBlockImport(value string, defaultValue bool) (bool, gtserror.WithCode) {
return parseBool(value, defaultValue, DomainBlockImportKey)
}
/*
Parse functions for *REQUIRED* parameters.
*/
func ParseID(value string) (string, gtserror.WithCode) {
key := IDKey
if value == "" {
return "", requiredError(key)
}
return value, nil
}
func ParseSearchLookup(value string) (string, gtserror.WithCode) {
key := SearchLookupKey
if value == "" {
return "", requiredError(key)
}
return value, nil
}
func ParseSearchQuery(value string) (string, gtserror.WithCode) {
key := SearchQueryKey
if value == "" {
return "", requiredError(key)
}
return value, nil
}
func ParseWebUsername(value string) (string, gtserror.WithCode) {
key := WebUsernameKey
if value == "" {
return "", requiredError(key)
}
return value, nil
}
func ParseWebStatusID(value string) (string, gtserror.WithCode) {
key := WebStatusIDKey
if value == "" {
return "", requiredError(key)
}
return value, nil
}
/*
Internal functions
*/
func parseBool(value string, defaultValue bool, key string) (bool, gtserror.WithCode) {
if value == "" {
return defaultValue, nil
}
i, err := strconv.ParseBool(value)
if err != nil {
return defaultValue, parseError(key, value, defaultValue, err)
}
return i, nil
}
func parseInt(value string, defaultValue int, max int, min int, key string) (int, gtserror.WithCode) {
if value == "" {
return defaultValue, nil
}
i, err := strconv.Atoi(value)
if err != nil {
return defaultValue, parseError(key, value, defaultValue, err)
}
if i > max {
i = max
} else if i < min {
i = min
}
return i, nil
}
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