FEAT: Added Database To CMS Serbove

cms/internal/services/db.go

@@ -0,0 +1,83 @@
+package services
+
+import (
+	"context"
+	"database/sql"
+	"fmt"
+	"thamanyah/cms/v2/internal/db"
+	"time"
+)
+
+var DB DBClient
+
+type Video struct {
+	ID                string
+	Title             string
+	Description       string
+	Category          string
+	Tags              string
+	FileName          string
+	StorageKey        string
+	MediaConvertJobID string
+	Status            string
+	SizeBytes         int64
+	CreatedAt         time.Time
+	UpdatedAt         time.Time
+}
+
+type DBClient interface {
+	CreateVideo(ctx context.Context, v Video) (Video, error)
+}
+
+type DBConcrete struct {
+	ConnectionString string
+}
+
+func (svc DBConcrete) CreateVideo(ctx context.Context, v Video) (Video, error) {
+	db, err := sql.Open("postgres", svc.ConnectionString)
+	if err != nil {
+		return Video{}, err
+	}
+	defer db.Close()
+
+	var categoryID int64
+	if err := db.QueryRowContext(ctx, `SELECT id FROM categories WHERE name = $1`, v.Category).Scan(&categoryID); err != nil {
+		return Video{}, fmt.Errorf("looking up category %q: %w", v.Category, err)
+	}
+
+	row := db.QueryRowContext(ctx, `
+		INSERT INTO videos (title, description, category_id, tags, file_name, storage_key, mediaconvert_job_id, status, size_bytes)
+		VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10)
+		RETURNING created_at, updated_at
+	`, v.Title, v.Description, categoryID, v.Tags, v.FileName, v.StorageKey, v.MediaConvertJobID, v.Status, v.SizeBytes)
+
+	if err := row.Scan(&v.CreatedAt, &v.UpdatedAt); err != nil {
+		return Video{}, err
+	}
+	return v, nil
+}
+
+func (svc DBConcrete) Migrate() {
+	sqlDB, err := sql.Open("postgres", svc.ConnectionString)
+	if err != nil {
+		panic(fmt.Errorf("failed to open db connection: %w", err))
+	}
+	if err := db.Migrate(sqlDB); err != nil {
+		panic(err)
+	}
+	sqlDB.Close()
+}
+
+// AssertSuccessfulConnection verifies the database is reachable, mirroring
+// S3Concrete's boot-time check — panics rather than let the service come up broken.
+func (svc DBConcrete) AssertSuccessfulConnection(ctx context.Context) {
+	db, err := sql.Open("postgres", svc.ConnectionString)
+	if err != nil {
+		panic(fmt.Errorf("db: cannot open connection: %w", err))
+	}
+	defer db.Close()
+
+	if err := db.PingContext(ctx); err != nil {
+		panic(fmt.Errorf("db: cannot connect: %w", err))
+	}
+}