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package auth
import (
"context"
"log/slog"
"time"
"github.com/ansg191/ibd-trader/backend/internal/database"
"github.com/ansg191/ibd-trader/backend/internal/redis/taskqueue"
"github.com/redis/go-redis/v9"
"github.com/robfig/cron/v3"
)
const (
Queue = "auth-queue"
QueueEncoding = taskqueue.EncodingJSON
)
// Manager is responsible for sending authentication tasks to the workers.
type Manager struct {
queue taskqueue.TaskQueue[TaskInfo]
db database.Executor
schedule cron.Schedule
}
func New(
ctx context.Context,
db database.Executor,
rClient *redis.Client,
schedule cron.Schedule,
) (*Manager, error) {
queue, err := taskqueue.New(
ctx,
rClient,
Queue,
"auth-manager",
taskqueue.WithEncoding[TaskInfo](QueueEncoding),
)
if err != nil {
return nil, err
}
return &Manager{
queue: queue,
db: db,
schedule: schedule,
}, nil
}
func (m *Manager) Run(ctx context.Context) {
for {
now := time.Now()
// Find the next time
nextTime := m.schedule.Next(now)
if nextTime.IsZero() {
// Sleep until the next day
time.Sleep(time.Until(now.AddDate(0, 0, 1)))
continue
}
timer := time.NewTimer(nextTime.Sub(now))
slog.DebugContext(ctx, "waiting for next Auth scrape", "next_exec", nextTime)
select {
case <-timer.C:
nextExec := m.schedule.Next(nextTime)
m.scrapeCookies(ctx, nextExec)
case <-ctx.Done():
if !timer.Stop() {
<-timer.C
}
return
}
}
}
// scrapeCookies scrapes the cookies for every user from the IBD website.
//
// This iterates through all users with IBD credentials and checks whether their cookies are still valid.
// If the cookies are invalid or missing, it re-authenticates the user and updates the cookies in the database.
func (m *Manager) scrapeCookies(ctx context.Context, deadline time.Time) {
ctx, cancel := context.WithDeadline(ctx, deadline)
defer cancel()
// Get all users with IBD credentials
users, err := database.ListUsers(ctx, m.db, true)
if err != nil {
slog.ErrorContext(ctx, "failed to get users", "error", err)
return
}
// Create a new task for each user
for _, user := range users {
task := TaskInfo{
UserSubject: user.Subject,
}
// Enqueue the task
_, err := m.queue.Enqueue(ctx, task)
if err != nil {
slog.ErrorContext(ctx, "failed to enqueue task", "error", err)
}
}
slog.InfoContext(ctx, "enqueued tasks for all users")
}
type TaskInfo struct {
UserSubject string `json:"user_subject"`
}
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