99 lines
2.2 KiB
Go
99 lines
2.2 KiB
Go
package database
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import (
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"database/sql"
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"fmt"
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"log"
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"studia/internal/config"
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"studia/internal/logger"
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_ "github.com/lib/pq" // Import the PostgreSQL driver
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)
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var expectedTables = []string{
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"users",
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}
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func New(cfg *config.Config) *sql.DB {
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db := setupDatabase(cfg)
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existing, err := getExistingTables(db, `
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SELECT table_name
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FROM information_schema.tables
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WHERE table_schema = 'public'
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`)
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if err != nil {
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logger.Log.Error().Err(err).Msg("Failed to query existing tables")
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}
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missing := checkTables(expectedTables, existing)
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if len(missing) > 0 {
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log.Println("Missing tables detected:", missing)
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// Here you would normally run migrations to create the missing tables
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// For simplicity, we just log the missing tables
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} else {
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logger.Log.Info().Msg("All expected tables are present.")
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}
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return db
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}
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func setupDatabase(cfg *config.Config) *sql.DB {
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// Database connection setup logic here
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logger.Log.Println(cfg)
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switch cfg.DatabaseDriver {
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case "postgres":
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// Setup Postgres connection
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log.Println("Setting up Postgres connection")
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psqlInfo := fmt.Sprintf("host=%s port=%s user=%s password=%s dbname=%s sslmode=disable",
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cfg.DatabaseHost, cfg.DatabasePort, cfg.DatabaseUser, cfg.DatabasePassword, cfg.DatabaseName)
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db, err := sql.Open("postgres", psqlInfo)
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if err != nil {
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log.Fatal("Failed to connect to database:", err)
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}
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return db
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case "mysql":
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// Setup MySQL connection
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dsn := fmt.Sprintf("%s:%s@tcp(%s:%s)/%s",
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cfg.DatabaseUser, cfg.DatabasePassword, cfg.DatabaseHost, cfg.DatabasePort, cfg.DatabaseName)
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db, err := sql.Open("mysql", dsn)
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if err != nil {
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// Handle error
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}
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return db
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default:
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// Handle unsupported database driver
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}
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return nil
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}
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func getExistingTables(db *sql.DB, query string) (map[string]bool, error) {
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rows, err := db.Query(query)
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if err != nil {
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return nil, err
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}
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defer rows.Close()
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tables := make(map[string]bool)
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for rows.Next() {
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var name string
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if err := rows.Scan(&name); err != nil {
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return nil, err
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}
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tables[name] = true
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}
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return tables, nil
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}
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func checkTables(expected []string, existing map[string]bool) []string {
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var missing []string
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for _, table := range expected {
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if !existing[table] {
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missing = append(missing, table)
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}
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}
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return missing
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}
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