94 lines
2.1 KiB
Go
94 lines
2.1 KiB
Go
// Package validation provides utilities for parsing and validating request data
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package validation
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import (
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"errors"
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"fmt"
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"net/http"
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"git.haelnorr.com/h/golib/hws"
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"git.haelnorr.com/h/oslstats/internal/notify"
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"git.haelnorr.com/h/oslstats/internal/throw"
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"git.haelnorr.com/h/timefmt"
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)
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type ValidationRule struct {
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Condition bool // Condition on which to fail validation
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Title string // Title for warning message
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Message string // Warning message
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}
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// Getter abstracts getting values from either form or query
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type Getter interface {
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Get(key string) string
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AddCheck(check *ValidationRule)
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String(key string) *StringField
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Int(key string) *IntField
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Time(key string, format *timefmt.Format) *TimeField
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ValidateChecks() []*ValidationRule
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Validate() bool
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ValidateAndNotify(s *hws.Server, w http.ResponseWriter, r *http.Request) bool
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ValidateAndError(s *hws.Server, w http.ResponseWriter, r *http.Request) bool
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getChecks() []*ValidationRule
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}
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type Field struct {
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Key string
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optional bool
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getter Getter
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}
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func newField(key string, g Getter) Field {
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return Field{
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Key: key,
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getter: g,
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}
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}
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func newFailedCheck(title, message string) *ValidationRule {
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return &ValidationRule{
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Condition: true,
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Title: title,
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Message: message,
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}
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}
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func validate(g Getter) []*ValidationRule {
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failed := []*ValidationRule{}
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for _, check := range g.getChecks() {
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if check != nil && check.Condition {
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failed = append(failed, check)
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}
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}
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return failed
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}
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func validateAndNotify(
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s *hws.Server,
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w http.ResponseWriter,
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r *http.Request,
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g Getter,
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) bool {
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failedChecks := g.ValidateChecks()
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for _, check := range failedChecks {
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notify.Warn(s, w, r, check.Title, check.Message, nil)
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}
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return len(failedChecks) == 0
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}
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func validateAndError(
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s *hws.Server,
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w http.ResponseWriter,
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r *http.Request,
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g Getter,
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) bool {
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failedChecks := g.ValidateChecks()
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var err error
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for _, check := range failedChecks {
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err_ := fmt.Errorf("%s: %s", check.Title, check.Message)
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err = errors.Join(err, err_)
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}
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throw.BadRequest(s, w, r, "Invalid form data", err)
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return len(failedChecks) == 0
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}
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