feat: initialise project structure with core encoding queue, database models, and web management API

internal/db/db.go

@@ -0,0 +1,92 @@
+package db
+
+import (
+	"database/sql"
+	"fmt"
+	"log"
+	"time"
+
+	_ "github.com/go-sql-driver/mysql"
+	"goencode/internal/config"
+)
+
+var DB *sql.DB
+
+func Init(cfg *config.DatabaseConfig) error {
+	dsn := fmt.Sprintf("%s:%s@tcp(%s:%d)/%s?parseTime=true",
+		cfg.User, cfg.Password, cfg.Host, cfg.Port, cfg.Name)
+
+	var err error
+	DB, err = sql.Open("mysql", dsn)
+	if err != nil {
+		return err
+	}
+
+	// Set connection pool limits
+	DB.SetMaxOpenConns(25)
+	DB.SetMaxIdleConns(25)
+	DB.SetConnMaxLifetime(5 * time.Minute)
+
+	if err = DB.Ping(); err != nil {
+		return err
+	}
+
+	log.Println("Connected to MariaDB successfully")
+
+	return runMigrations()
+}
+
+func runMigrations() error {
+	queries := []string{
+		`CREATE TABLE IF NOT EXISTS watch_folders (
+			id INT AUTO_INCREMENT PRIMARY KEY,
+			folder_path VARCHAR(500) NOT NULL UNIQUE,
+			media_type ENUM('video', 'audio') NOT NULL,
+			target_resolution VARCHAR(20),
+			custom_ffmpeg_flags TEXT,
+			enabled BOOLEAN DEFAULT TRUE,
+			created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+			updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
+		)`,
+		`CREATE TABLE IF NOT EXISTS jobs (
+			id INT AUTO_INCREMENT PRIMARY KEY,
+			file_path VARCHAR(500) NOT NULL,
+			media_type ENUM('video', 'audio') NOT NULL,
+			status ENUM('pending', 'processing', 'failed') NOT NULL DEFAULT 'pending',
+			priority INT NOT NULL DEFAULT 0,
+			original_size BIGINT DEFAULT 0,
+			target_resolution VARCHAR(20),
+			ffmpeg_flags TEXT,
+			error_message TEXT,
+			created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+			updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
+		)`,
+		`CREATE TABLE IF NOT EXISTS job_reports (
+			id INT AUTO_INCREMENT PRIMARY KEY,
+			file_path VARCHAR(500) NOT NULL,
+			media_type ENUM('video', 'audio') NOT NULL,
+			status ENUM('success', 'failed', 'skipped') NOT NULL,
+			original_size BIGINT NOT NULL DEFAULT 0,
+			encoded_size BIGINT NOT NULL DEFAULT 0,
+			size_saved BIGINT NOT NULL DEFAULT 0,
+			processing_time DECIMAL(10,2) DEFAULT 0,
+			target_resolution VARCHAR(20),
+			ffmpeg_flags TEXT,
+			error_message TEXT,
+			created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+		)`,
+		`CREATE TABLE IF NOT EXISTS app_config (
+			config_key VARCHAR(100) PRIMARY KEY,
+			config_value TEXT
+		)`,
+	}
+
+	for _, q := range queries {
+		if _, err := DB.Exec(q); err != nil {
+			return fmt.Errorf("migration failed: %w\nQuery: %s", err, q)
+		}
+	}
+
+	log.Println("Database schemas initialized")
+	return nil
+}