Stephen Parkinson
3934751615
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Build and Deploy Website / build (push) Failing after 2m46s
96 lines
1.6 KiB
Go
96 lines
1.6 KiB
Go
package paste
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import (
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"crypto/rand"
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"errors"
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"sync"
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"time"
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)
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var ErrNotFound = errors.New("paste not found")
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type Paste struct {
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ID string `json:"id"`
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Title string `json:"title"`
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Content string `json:"content"`
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Language string `json:"language"`
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CreatedAt time.Time `json:"created_at"`
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ExpiresAt *time.Time `json:"expires_at"`
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}
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type Store struct {
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mu sync.RWMutex
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pastes map[string]*Paste
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}
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func NewStore() *Store {
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return &Store{pastes: make(map[string]*Paste)}
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}
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func (s *Store) Create(p *Paste) error {
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id, err := generateID()
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if err != nil {
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return err
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}
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p.ID = id
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p.CreatedAt = time.Now().UTC()
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s.mu.Lock()
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s.pastes[id] = p
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s.mu.Unlock()
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return nil
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}
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func (s *Store) Get(id string) (*Paste, error) {
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s.mu.RLock()
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p, ok := s.pastes[id]
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s.mu.RUnlock()
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if !ok {
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return nil, ErrNotFound
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}
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return p, nil
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}
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func (s *Store) Delete(id string) error {
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s.mu.Lock()
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delete(s.pastes, id)
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s.mu.Unlock()
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return nil
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}
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func (s *Store) ForEach(fn func(p *Paste) error) error {
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s.mu.RLock()
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ids := make([]string, 0, len(s.pastes))
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for id := range s.pastes {
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ids = append(ids, id)
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}
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s.mu.RUnlock()
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for _, id := range ids {
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s.mu.RLock()
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p, ok := s.pastes[id]
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s.mu.RUnlock()
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if !ok {
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continue
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}
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if err := fn(p); err != nil {
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return err
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}
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}
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return nil
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}
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const base62Chars = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
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func generateID() (string, error) {
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b := make([]byte, 8)
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if _, err := rand.Read(b); err != nil {
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return "", err
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}
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result := make([]byte, 8)
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for i, v := range b {
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result[i] = base62Chars[int(v)%62]
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}
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return string(result), nil
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}
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