Files
Crussell/backend/mw/auth.go
T
popertotsandSisyphus 2ba7b85d0b feat: add OptionalAuth middleware and slot reservation endpoint
OptionalAuth extracts user info from Bearer token if present,
otherwise passes through without requiring authentication.

ReserveSlotHandler creates temporary time_blockers reservations:
- Logged-in users: max 1 active, 1hr TTL, tracked by user_id
- Anonymous users: global cap of 50, 10min TTL, tracked by IP hash
- Validates slot availability (working hours, booking overlap, blocker overlap)
- Returns reservation ID, start_time, duration, and expires_at

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>
2026-04-29 22:56:53 +01:00

112 lines
2.9 KiB
Go

package mw
import (
"context"
"net/http"
"strings"
"crussell/auth"
)
type contextKey string
const (
UserIDKey contextKey = "user_id"
UserRoleKey contextKey = "user_role"
)
// RequireAuth middleware - validates JWT and adds user info to context
func RequireAuth(next http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
authHeader := r.Header.Get("Authorization")
if authHeader == "" || !strings.HasPrefix(authHeader, "Bearer ") {
http.Error(w, "missing or invalid authorization header", http.StatusUnauthorized)
return
}
tokenString := strings.TrimPrefix(authHeader, "Bearer ")
userID, role, err := auth.VerifyToken(tokenString, r.Context())
if err != nil {
http.Error(w, "invalid token", http.StatusUnauthorized)
return
}
// Add user info to context
ctx := context.WithValue(r.Context(), UserIDKey, userID)
ctx = context.WithValue(ctx, UserRoleKey, role)
next.ServeHTTP(w, r.WithContext(ctx))
})
}
// OptionalAuth middleware - extracts user info if token present, otherwise passes through
func OptionalAuth(next http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
authHeader := r.Header.Get("Authorization")
if authHeader != "" && strings.HasPrefix(authHeader, "Bearer ") {
tokenString := strings.TrimPrefix(authHeader, "Bearer ")
userID, role, err := auth.VerifyToken(tokenString, r.Context())
if err == nil {
ctx := context.WithValue(r.Context(), UserIDKey, userID)
ctx = context.WithValue(ctx, UserRoleKey, role)
next.ServeHTTP(w, r.WithContext(ctx))
return
}
}
next.ServeHTTP(w, r)
})
}
// RequireRole middleware - checks if user has required role(s)
func RequireRole(allowedRoles ...string) func(http.Handler) http.Handler {
return func(next http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
role, ok := r.Context().Value(UserRoleKey).(string)
if !ok {
http.Error(w, "unauthorized", http.StatusUnauthorized)
return
}
// Check if user has one of the allowed roles
hasRole := false
for _, allowedRole := range allowedRoles {
if role == allowedRole {
hasRole = true
break
}
}
if !hasRole {
http.Error(w, "forbidden", http.StatusForbidden)
return
}
next.ServeHTTP(w, r)
})
}
}
// RequireVerified middleware - only allows verified_email and admin
func RequireVerified(next http.Handler) http.Handler {
return RequireRole("verified_email", "admin")(next)
}
// RequireAdmin middleware - only allows admin
func RequireAdmin(next http.Handler) http.Handler {
return RequireRole("admin")(next)
}
// Helper functions to get user info from context
func GetUserID(ctx context.Context) (string, bool) {
userID, ok := ctx.Value(UserIDKey).(string)
return userID, ok
}
func GetUserRole(ctx context.Context) (string, bool) {
role, ok := ctx.Value(UserRoleKey).(string)
return role, ok
}