feat(api): Add compatibility layer for API v1

main.go

@@ -1,17 +1,21 @@
 package main
 
 import (
+	"database/sql"
 	"fmt"
 	"os"
 	"strings"
 
 	"github.com/rs/zerolog/log"
 
+	_ "modernc.org/sqlite"
+
 	"prayertimes/internal/api"
 	"prayertimes/internal/net"
 	"prayertimes/pkg/citydb"
 	"prayertimes/pkg/diyanetapi"
 	"prayertimes/pkg/diyanetcalc"
+	"prayertimes/pkg/diyanetcitydb"
 	"prayertimes/pkg/diyanetprovider"
 )
 
@@ -28,19 +32,23 @@ func run() error {
 		return fmt.Errorf("DB_PATH is not set")
 	}
 
-	locationProvider, err := citydb.Open(dbPath)
+	conn, err := newDB(dbPath)
 	if err != nil {
-		return fmt.Errorf("failed to open city database: %w", err)
+		return fmt.Errorf("failed to initialize database connection: %w", err)
 	}
-	defer locationProvider.Close()
+	defer conn.Close()
+
+	locationProvider := citydb.NewWithConn(conn)
+	legacyLocationProvider := diyanetcitydb.New(conn)
 
 	diyanetAPIProvider := diyanetapi.New(net.ReqClient)
 	diyanetCalcProvider := diyanetcalc.New()
 	prayerProvider := diyanetprovider.New(diyanetAPIProvider, diyanetCalcProvider)
 
 	services := api.Services{
-		PrayerProvider:   prayerProvider,
-		LocationProvider: locationProvider,
+		PrayerProvider:         prayerProvider,
+		LocationProvider:       locationProvider,
+		LegacyLocationProvider: legacyLocationProvider,
 	}
 
 	app := api.New(services)
@@ -58,3 +66,17 @@ func getDefaultEnv(name string, defaultValue string) string {
 	}
 	return v
 }
+
+func newDB(path string) (*sql.DB, error) {
+	conn, err := sql.Open("sqlite", path)
+	if err != nil {
+		return nil, fmt.Errorf("failed to open database connection: %w", err)
+	}
+
+	if err := conn.Ping(); err != nil {
+		_ = conn.Close()
+		return nil, fmt.Errorf("failed to connect to database: %w", err)
+	}
+
+	return conn, nil
+}