Files

765 lines
22 KiB
Go

package main
import (
"context"
"encoding/json"
"errors"
"log"
"net/http"
"os"
"strconv"
"strings"
"time"
"wolves.top/todo/internal/iam"
"wolves.top/todo/internal/notification"
"github.com/gin-gonic/gin"
"github.com/jackc/pgconn"
"github.com/jackc/pgx/v5"
"github.com/jackc/pgx/v5/pgxpool"
"github.com/segmentio/kafka-go"
)
type Task struct {
ID int64 `json:"id"`
Title string `json:"title"`
Description string `json:"description"`
Status string `json:"status"`
DueAt string `json:"due_at"`
Priority int `json:"priority"`
Tags []string `json:"tags"`
NotifyGroupIDs []int64 `json:"notify_group_ids"`
CreatedAt time.Time `json:"created_at"`
UpdatedAt time.Time `json:"updated_at"`
}
type postgresStore struct {
pool *pgxpool.Pool
}
type taskEmitter struct {
writer *kafka.Writer
topic string
}
var (
errAlreadyExists = errors.New("already exists")
)
func newPostgresStore(ctx context.Context, url string) (*postgresStore, error) {
pool, err := pgxpool.New(ctx, url)
if err != nil {
return nil, err
}
if err := pool.Ping(ctx); err != nil {
pool.Close()
return nil, err
}
store := &postgresStore{pool: pool}
if err := store.initSchema(ctx); err != nil {
pool.Close()
return nil, err
}
return store, nil
}
func (s *postgresStore) initSchema(ctx context.Context) error {
statements := []string{
`CREATE TABLE IF NOT EXISTS users (
id BIGSERIAL PRIMARY KEY,
email TEXT UNIQUE NOT NULL,
password_hash TEXT NOT NULL,
created_at TIMESTAMPTZ NOT NULL DEFAULT now()
)`,
`CREATE TABLE IF NOT EXISTS tasks (
id BIGSERIAL PRIMARY KEY,
user_id BIGINT NOT NULL REFERENCES users(id) ON DELETE CASCADE,
title TEXT NOT NULL,
description TEXT,
status TEXT NOT NULL,
due_at TEXT,
priority INT NOT NULL DEFAULT 0,
tags TEXT[] NOT NULL DEFAULT '{}',
notify_group_ids BIGINT[] NOT NULL DEFAULT '{}',
created_at TIMESTAMPTZ NOT NULL,
updated_at TIMESTAMPTZ NOT NULL
)`,
`ALTER TABLE tasks ADD COLUMN IF NOT EXISTS notify_group_ids BIGINT[] NOT NULL DEFAULT '{}'`,
`CREATE TABLE IF NOT EXISTS user_notification_prefs (
user_id BIGINT PRIMARY KEY REFERENCES users(id) ON DELETE CASCADE,
subscribed BOOLEAN NOT NULL DEFAULT true,
dnd_start TIME NULL,
dnd_end TIME NULL,
locale TEXT NOT NULL DEFAULT 'zh',
timezone TEXT NOT NULL DEFAULT 'Asia/Shanghai',
daily_summary_enabled BOOLEAN NOT NULL DEFAULT true,
daily_summary_time TIME NOT NULL DEFAULT '09:30:00',
updated_at TIMESTAMPTZ NOT NULL DEFAULT now()
)`,
`CREATE TABLE IF NOT EXISTS notification_groups (
id BIGSERIAL PRIMARY KEY,
user_id BIGINT NOT NULL REFERENCES users(id) ON DELETE CASCADE,
name TEXT NOT NULL,
emails TEXT[] NOT NULL DEFAULT '{}',
created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
updated_at TIMESTAMPTZ NOT NULL DEFAULT now(),
UNIQUE (user_id, name)
)`,
`CREATE TABLE IF NOT EXISTS task_notification_groups (
task_id BIGINT NOT NULL REFERENCES tasks(id) ON DELETE CASCADE,
group_id BIGINT NOT NULL REFERENCES notification_groups(id) ON DELETE CASCADE,
PRIMARY KEY (task_id, group_id)
)`,
`CREATE TABLE IF NOT EXISTS notification_events (
event_id TEXT PRIMARY KEY,
event_type TEXT NOT NULL,
user_id BIGINT NOT NULL,
occurred_at TIMESTAMPTZ NOT NULL,
payload JSONB NOT NULL,
trace_id TEXT NOT NULL,
created_at TIMESTAMPTZ NOT NULL DEFAULT now()
)`,
`CREATE TABLE IF NOT EXISTS notification_jobs (
job_id TEXT PRIMARY KEY,
event_id TEXT NOT NULL REFERENCES notification_events(event_id),
trace_id TEXT NOT NULL,
user_id BIGINT NOT NULL,
channel TEXT NOT NULL DEFAULT 'email',
to_emails TEXT[] NOT NULL,
template_id TEXT NOT NULL,
params JSONB NOT NULL,
idempotency_key TEXT NOT NULL UNIQUE,
status TEXT NOT NULL,
scheduled_at TIMESTAMPTZ NOT NULL,
available_at TIMESTAMPTZ NOT NULL,
retry_count INT NOT NULL DEFAULT 0,
max_retry INT NOT NULL DEFAULT 5,
last_error_code TEXT NULL,
last_error_message TEXT NULL,
sent_at TIMESTAMPTZ NULL,
created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
updated_at TIMESTAMPTZ NOT NULL DEFAULT now()
)`,
`CREATE INDEX IF NOT EXISTS idx_notification_jobs_status_available ON notification_jobs(status, available_at)`,
`CREATE INDEX IF NOT EXISTS idx_notification_jobs_scheduled ON notification_jobs(scheduled_at)`,
`CREATE TABLE IF NOT EXISTS notification_attempts (
id BIGSERIAL PRIMARY KEY,
job_id TEXT NOT NULL REFERENCES notification_jobs(job_id) ON DELETE CASCADE,
attempt_no INT NOT NULL,
success BOOLEAN NOT NULL,
error_code TEXT NULL,
error_message TEXT NULL,
latency_ms INT NULL,
created_at TIMESTAMPTZ NOT NULL DEFAULT now()
)`,
`CREATE TABLE IF NOT EXISTS notification_dlq (
job_id TEXT PRIMARY KEY REFERENCES notification_jobs(job_id),
reason TEXT NOT NULL,
failed_at TIMESTAMPTZ NOT NULL,
snapshot JSONB NOT NULL
)`,
}
for _, stmt := range statements {
if _, err := s.pool.Exec(ctx, stmt); err != nil {
return err
}
}
return nil
}
func (s *postgresStore) List(ctx context.Context, userID int64) ([]Task, error) {
rows, err := s.pool.Query(ctx, `SELECT id, title, description, status, due_at, priority, tags, notify_group_ids, created_at, updated_at FROM tasks WHERE user_id = $1 ORDER BY id DESC`, userID)
if err != nil {
return nil, err
}
defer rows.Close()
result := []Task{}
for rows.Next() {
var task Task
var tags []string
var notifyGroupIDs []int64
if err := rows.Scan(&task.ID, &task.Title, &task.Description, &task.Status, &task.DueAt, &task.Priority, &tags, &notifyGroupIDs, &task.CreatedAt, &task.UpdatedAt); err != nil {
return nil, err
}
task.Tags = tags
task.NotifyGroupIDs = notifyGroupIDs
result = append(result, task)
}
return result, rows.Err()
}
func (s *postgresStore) Get(ctx context.Context, userID, id int64) (Task, error) {
var task Task
var tags []string
var notifyGroupIDs []int64
err := s.pool.QueryRow(ctx, `SELECT id, title, description, status, due_at, priority, tags, notify_group_ids, created_at, updated_at FROM tasks WHERE user_id = $1 AND id = $2`, userID, id).
Scan(&task.ID, &task.Title, &task.Description, &task.Status, &task.DueAt, &task.Priority, &tags, &notifyGroupIDs, &task.CreatedAt, &task.UpdatedAt)
if err != nil {
return Task{}, err
}
task.Tags = tags
task.NotifyGroupIDs = notifyGroupIDs
return task, nil
}
func (s *postgresStore) Create(ctx context.Context, userID int64, input Task) (Task, error) {
if input.Status == "" {
input.Status = "todo"
}
var tags []string
if input.Tags != nil {
tags = input.Tags
}
groupIDs := dedupeInt64(input.NotifyGroupIDs)
err := s.pool.QueryRow(ctx, `
INSERT INTO tasks (user_id, title, description, status, due_at, priority, tags, notify_group_ids, created_at, updated_at)
VALUES ($1, $2, $3, $4, $5, $6, $7, $8, now(), now())
RETURNING id, created_at, updated_at`,
userID, input.Title, input.Description, input.Status, input.DueAt, input.Priority, tags, groupIDs,
).Scan(&input.ID, &input.CreatedAt, &input.UpdatedAt)
if err != nil {
return Task{}, err
}
input.NotifyGroupIDs = groupIDs
if err := s.syncTaskNotificationGroups(ctx, userID, input.ID, groupIDs); err != nil {
return Task{}, err
}
return input, nil
}
func (s *postgresStore) Update(ctx context.Context, userID, id int64, input Task) (Task, error) {
existing, err := s.Get(ctx, userID, id)
if err != nil {
return Task{}, err
}
if input.Title != "" {
existing.Title = input.Title
}
if input.Description != "" {
existing.Description = input.Description
}
if input.Status != "" {
existing.Status = input.Status
}
if input.DueAt != "" {
existing.DueAt = input.DueAt
}
if input.Priority != 0 {
existing.Priority = input.Priority
}
if input.Tags != nil {
existing.Tags = input.Tags
}
if input.NotifyGroupIDs != nil {
existing.NotifyGroupIDs = dedupeInt64(input.NotifyGroupIDs)
}
var updatedAt time.Time
err = s.pool.QueryRow(ctx, `
UPDATE tasks
SET title = $1, description = $2, status = $3, due_at = $4, priority = $5, tags = $6, notify_group_ids = $7, updated_at = now()
WHERE id = $8 AND user_id = $9
RETURNING updated_at`,
existing.Title, existing.Description, existing.Status, existing.DueAt, existing.Priority, existing.Tags, existing.NotifyGroupIDs, id, userID,
).Scan(&updatedAt)
if err != nil {
return Task{}, err
}
if err := s.syncTaskNotificationGroups(ctx, userID, id, existing.NotifyGroupIDs); err != nil {
return Task{}, err
}
existing.UpdatedAt = updatedAt
return existing, nil
}
func (s *postgresStore) syncTaskNotificationGroups(ctx context.Context, userID, taskID int64, groupIDs []int64) error {
groupIDs = dedupeInt64(groupIDs)
tx, err := s.pool.Begin(ctx)
if err != nil {
return err
}
defer tx.Rollback(ctx)
if _, err := tx.Exec(ctx, `DELETE FROM task_notification_groups WHERE task_id = $1`, taskID); err != nil {
return err
}
if len(groupIDs) == 0 {
return tx.Commit(ctx)
}
rows, err := tx.Query(ctx, `SELECT id FROM notification_groups WHERE user_id = $1 AND id = ANY($2)`, userID, groupIDs)
if err != nil {
return err
}
valid := make([]int64, 0, len(groupIDs))
for rows.Next() {
var id int64
if err := rows.Scan(&id); err != nil {
rows.Close()
return err
}
valid = append(valid, id)
}
rows.Close()
for _, groupID := range valid {
if _, err := tx.Exec(ctx, `INSERT INTO task_notification_groups (task_id, group_id) VALUES ($1, $2) ON CONFLICT DO NOTHING`, taskID, groupID); err != nil {
return err
}
}
return tx.Commit(ctx)
}
func (s *postgresStore) Delete(ctx context.Context, userID, id int64) error {
result, err := s.pool.Exec(ctx, `DELETE FROM tasks WHERE id = $1 AND user_id = $2`, id, userID)
if err != nil {
return err
}
if result.RowsAffected() == 0 {
return pgx.ErrNoRows
}
return nil
}
func (s *postgresStore) Close() {
if s.pool != nil {
s.pool.Close()
}
}
func (s *postgresStore) Pool() *pgxpool.Pool {
return s.pool
}
func newTaskEmitter(brokers []string, topic string) *taskEmitter {
if len(brokers) == 0 {
return nil
}
writer := &kafka.Writer{
Addr: kafka.TCP(brokers...),
Topic: topic,
Balancer: &kafka.LeastBytes{},
}
return &taskEmitter{writer: writer, topic: topic}
}
func (e *taskEmitter) Emit(ctx context.Context, eventType string, task Task, userID int64) {
if e == nil || e.writer == nil {
return
}
payload := map[string]any{
"type": eventType,
"task_id": task.ID,
"user_id": userID,
"status": task.Status,
"priority": task.Priority,
"notify_group_ids": task.NotifyGroupIDs,
"at": time.Now().UTC().Format(time.RFC3339),
}
data, err := json.Marshal(payload)
if err != nil {
return
}
writeCtx, cancel := context.WithTimeout(ctx, 2*time.Second)
defer cancel()
if err := e.writer.WriteMessages(writeCtx, kafka.Message{Key: []byte(strconv.FormatInt(task.ID, 10)), Value: data}); err != nil {
log.Printf("kafka write failed: %v", err)
}
}
func (e *taskEmitter) Close() {
if e == nil || e.writer == nil {
return
}
if err := e.writer.Close(); err != nil {
log.Printf("kafka close failed: %v", err)
}
}
func isUniqueViolation(err error) bool {
var pgErr *pgconn.PgError
if errors.As(err, &pgErr) && pgErr.Code == "23505" {
return true
}
return false
}
func main() {
store, iamSvc, emitter, notifySvc := buildDependencies()
defer store.Close()
defer iamSvc.Close()
defer emitter.Close()
defer notifySvc.Close()
appCtx, cancel := context.WithCancel(context.Background())
defer cancel()
notifySvc.Start(appCtx)
gin.SetMode(gin.DebugMode)
router := gin.Default()
router.RedirectTrailingSlash = false
router.RedirectFixedPath = false
router.Use(corsMiddleware())
router.GET("/api/health", func(c *gin.Context) {
c.JSON(http.StatusOK, gin.H{"status": "ok"})
})
cfg := iam.LoadConfig()
iam.NewHandler(iamSvc, cfg).RegisterRoutes(router)
api := router.Group("/api/v1")
api.Use(iamSvc.RequireAccess())
tasks := api.Group("/tasks")
{
tasks.GET("", func(c *gin.Context) {
userID := c.GetInt64(iam.ContextUserIDKey)
items, err := store.List(c.Request.Context(), userID)
if err != nil {
c.JSON(http.StatusInternalServerError, gin.H{"error": "failed to load tasks"})
return
}
c.JSON(http.StatusOK, items)
})
tasks.POST("", func(c *gin.Context) {
var input Task
if err := c.ShouldBindJSON(&input); err != nil {
c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
return
}
userID := c.GetInt64(iam.ContextUserIDKey)
created, err := store.Create(c.Request.Context(), userID, input)
if err != nil {
c.JSON(http.StatusInternalServerError, gin.H{"error": "failed to save task"})
return
}
emitter.Emit(c.Request.Context(), "task.created", created, userID)
_ = notifySvc.PublishTaskEvent(c.Request.Context(), "task.created", toTaskSnapshot(userID, created))
c.JSON(http.StatusCreated, created)
})
tasks.GET(":id", func(c *gin.Context) {
id, err := parseID(c.Param("id"))
if err != nil {
c.JSON(http.StatusBadRequest, gin.H{"error": "invalid id"})
return
}
userID := c.GetInt64(iam.ContextUserIDKey)
item, err := store.Get(c.Request.Context(), userID, id)
if err != nil {
if errors.Is(err, pgx.ErrNoRows) {
c.JSON(http.StatusNotFound, gin.H{"error": "not found"})
return
}
c.JSON(http.StatusInternalServerError, gin.H{"error": "failed to load task"})
return
}
c.JSON(http.StatusOK, item)
})
tasks.PUT(":id", func(c *gin.Context) {
id, err := parseID(c.Param("id"))
if err != nil {
c.JSON(http.StatusBadRequest, gin.H{"error": "invalid id"})
return
}
var input Task
if err := c.ShouldBindJSON(&input); err != nil {
c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
return
}
userID := c.GetInt64(iam.ContextUserIDKey)
before, err := store.Get(c.Request.Context(), userID, id)
if err != nil {
if errors.Is(err, pgx.ErrNoRows) {
c.JSON(http.StatusNotFound, gin.H{"error": "not found"})
return
}
c.JSON(http.StatusInternalServerError, gin.H{"error": "failed to load task"})
return
}
updated, err := store.Update(c.Request.Context(), userID, id, input)
if err != nil {
if errors.Is(err, pgx.ErrNoRows) {
c.JSON(http.StatusNotFound, gin.H{"error": "not found"})
return
}
c.JSON(http.StatusInternalServerError, gin.H{"error": "failed to update task"})
return
}
eventType := "task.updated"
if before.Status != updated.Status {
eventType = "task.status_changed"
}
emitter.Emit(c.Request.Context(), eventType, updated, userID)
_ = notifySvc.PublishTaskEvent(c.Request.Context(), eventType, toTaskSnapshot(userID, updated))
c.JSON(http.StatusOK, updated)
})
tasks.DELETE(":id", func(c *gin.Context) {
id, err := parseID(c.Param("id"))
if err != nil {
c.JSON(http.StatusBadRequest, gin.H{"error": "invalid id"})
return
}
userID := c.GetInt64(iam.ContextUserIDKey)
if err := store.Delete(c.Request.Context(), userID, id); err != nil {
if errors.Is(err, pgx.ErrNoRows) {
c.JSON(http.StatusNotFound, gin.H{"error": "not found"})
return
}
c.JSON(http.StatusInternalServerError, gin.H{"error": "failed to delete task"})
return
}
emitter.Emit(c.Request.Context(), "task.deleted", Task{ID: id}, userID)
c.Status(http.StatusNoContent)
})
}
notifications := api.Group("/notifications")
{
notifications.GET("/prefs", func(c *gin.Context) {
userID := c.GetInt64(iam.ContextUserIDKey)
prefs, err := notifySvc.GetPrefs(c.Request.Context(), userID)
if err != nil {
c.JSON(http.StatusInternalServerError, gin.H{"error": "failed to load prefs"})
return
}
c.JSON(http.StatusOK, prefs)
})
notifications.PUT("/prefs", func(c *gin.Context) {
var input notification.UserNotificationPrefs
if err := c.ShouldBindJSON(&input); err != nil {
c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
return
}
userID := c.GetInt64(iam.ContextUserIDKey)
prefs, err := notifySvc.UpdatePrefs(c.Request.Context(), userID, input)
if err != nil {
c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
return
}
c.JSON(http.StatusOK, prefs)
})
notifications.GET("/groups", func(c *gin.Context) {
userID := c.GetInt64(iam.ContextUserIDKey)
groups, err := notifySvc.ListGroups(c.Request.Context(), userID)
if err != nil {
c.JSON(http.StatusInternalServerError, gin.H{"error": "failed to list groups"})
return
}
c.JSON(http.StatusOK, groups)
})
notifications.POST("/groups", func(c *gin.Context) {
var input notification.NotificationGroup
if err := c.ShouldBindJSON(&input); err != nil {
c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
return
}
userID := c.GetInt64(iam.ContextUserIDKey)
group, err := notifySvc.CreateGroup(c.Request.Context(), userID, input)
if err != nil {
status := http.StatusBadRequest
if isUniqueViolation(err) {
status = http.StatusConflict
}
c.JSON(status, gin.H{"error": err.Error()})
return
}
c.JSON(http.StatusCreated, group)
})
notifications.PUT("/groups/:id", func(c *gin.Context) {
id, err := parseID(c.Param("id"))
if err != nil {
c.JSON(http.StatusBadRequest, gin.H{"error": "invalid id"})
return
}
var input notification.NotificationGroup
if err := c.ShouldBindJSON(&input); err != nil {
c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
return
}
userID := c.GetInt64(iam.ContextUserIDKey)
group, err := notifySvc.UpdateGroup(c.Request.Context(), userID, id, input)
if err != nil {
if errors.Is(err, pgx.ErrNoRows) {
c.JSON(http.StatusNotFound, gin.H{"error": "not found"})
return
}
status := http.StatusBadRequest
if isUniqueViolation(err) {
status = http.StatusConflict
}
c.JSON(status, gin.H{"error": err.Error()})
return
}
c.JSON(http.StatusOK, group)
})
notifications.DELETE("/groups/:id", func(c *gin.Context) {
id, err := parseID(c.Param("id"))
if err != nil {
c.JSON(http.StatusBadRequest, gin.H{"error": "invalid id"})
return
}
userID := c.GetInt64(iam.ContextUserIDKey)
if err := notifySvc.DeleteGroup(c.Request.Context(), userID, id); err != nil {
if errors.Is(err, pgx.ErrNoRows) {
c.JSON(http.StatusNotFound, gin.H{"error": "not found"})
return
}
c.JSON(http.StatusInternalServerError, gin.H{"error": "failed to delete"})
return
}
c.Status(http.StatusNoContent)
})
notifications.GET("/dlq", func(c *gin.Context) {
page, _ := strconv.Atoi(c.DefaultQuery("page", "1"))
pageSize, _ := strconv.Atoi(c.DefaultQuery("page_size", "20"))
userID := c.GetInt64(iam.ContextUserIDKey)
items, err := notifySvc.ListDLQ(c.Request.Context(), userID, page, pageSize)
if err != nil {
c.JSON(http.StatusInternalServerError, gin.H{"error": "failed to load dlq"})
return
}
c.JSON(http.StatusOK, items)
})
notifications.GET("/metrics", func(c *gin.Context) {
from, to, err := parseMetricsRange(c.Query("from"), c.Query("to"))
if err != nil {
c.JSON(http.StatusBadRequest, gin.H{"error": "invalid from/to"})
return
}
metrics, err := notifySvc.GetMetrics(c.Request.Context(), from, to)
if err != nil {
c.JSON(http.StatusInternalServerError, gin.H{"error": "failed to load metrics"})
return
}
c.JSON(http.StatusOK, metrics)
})
}
if err := router.Run(":8080"); err != nil {
panic(err)
}
}
func buildDependencies() (*postgresStore, *iam.Service, *taskEmitter, *notification.Service) {
ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
defer cancel()
dbURL := strings.TrimSpace(os.Getenv("DATABASE_URL"))
if dbURL == "" {
dbURL = "postgres://todo:todo@localhost:5432/todo?sslmode=disable"
}
store, err := newPostgresStore(ctx, dbURL)
if err != nil {
log.Fatalf("postgres connection failed: %v", err)
}
iamCfg := iam.LoadConfig()
iamSvc, err := iam.NewService(ctx, store.Pool(), iamCfg)
if err != nil {
log.Fatalf("iam initialization failed: %v", err)
}
brokers := splitCSV(os.Getenv("KAFKA_BROKERS"))
topic := strings.TrimSpace(os.Getenv("KAFKA_TOPIC"))
if topic == "" {
topic = "todo.tasks"
}
emitter := newTaskEmitter(brokers, topic)
notifyCfg := notification.LoadConfigFromEnv()
notifySvc := notification.NewService(store.Pool(), notifyCfg)
return store, iamSvc, emitter, notifySvc
}
func toTaskSnapshot(userID int64, task Task) notification.TaskSnapshot {
return notification.TaskSnapshot{
ID: task.ID,
UserID: userID,
Title: task.Title,
Description: task.Description,
Status: task.Status,
DueAt: task.DueAt,
Priority: task.Priority,
Tags: task.Tags,
NotifyGroupIDs: task.NotifyGroupIDs,
}
}
func parseMetricsRange(fromStr, toStr string) (time.Time, time.Time, error) {
var from, to time.Time
var err error
if strings.TrimSpace(fromStr) != "" {
from, err = time.Parse(time.RFC3339, fromStr)
if err != nil {
return time.Time{}, time.Time{}, err
}
}
if strings.TrimSpace(toStr) != "" {
to, err = time.Parse(time.RFC3339, toStr)
if err != nil {
return time.Time{}, time.Time{}, err
}
}
return from, to, nil
}
func parseID(value string) (int64, error) {
return strconv.ParseInt(value, 10, 64)
}
func splitCSV(value string) []string {
if strings.TrimSpace(value) == "" {
return nil
}
parts := strings.Split(value, ",")
result := make([]string, 0, len(parts))
for _, part := range parts {
item := strings.TrimSpace(part)
if item != "" {
result = append(result, item)
}
}
return result
}
func dedupeInt64(in []int64) []int64 {
if len(in) == 0 {
return in
}
seen := map[int64]struct{}{}
out := make([]int64, 0, len(in))
for _, id := range in {
if id <= 0 {
continue
}
if _, ok := seen[id]; ok {
continue
}
seen[id] = struct{}{}
out = append(out, id)
}
return out
}
func corsMiddleware() gin.HandlerFunc {
return func(c *gin.Context) {
origin := strings.TrimSpace(c.GetHeader("Origin"))
if origin != "" {
c.Writer.Header().Set("Access-Control-Allow-Origin", origin)
c.Writer.Header().Set("Vary", "Origin")
c.Writer.Header().Set("Access-Control-Allow-Credentials", "true")
} else {
c.Writer.Header().Set("Access-Control-Allow-Origin", "*")
}
c.Writer.Header().Set("Access-Control-Allow-Methods", "GET, POST, PUT, DELETE, OPTIONS")
c.Writer.Header().Set("Access-Control-Allow-Headers", "Authorization, Content-Type")
if c.Request.Method == http.MethodOptions {
c.AbortWithStatus(http.StatusNoContent)
return
}
c.Next()
}
}