Restructure a bit

internal/pilgrim_common/db_adapter.go

@@ -0,0 +1,9 @@
+package pilgrim_common
+
+type PilgrimDbAdapter interface {
+	Up()
+	Down()
+	ValidateChecksums()
+	ValidateLatest()
+	ValidateMigrationOrder()
+}

internal/pilgrim_core/pilgrim.go

@@ -0,0 +1,52 @@
+package pilgrim_core
+
+import (
+	"mvvasilev.dev/pilgrim/internal/pilgrim_common"
+	"mvvasilev.dev/pilgrim/internal/pilgrim_conf"
+)
+
+type Pilgrim interface {
+	Context() pilgrim_conf.PilgrimConfigurationRetriever
+	Execute()
+}
+
+type pilgrimImpl struct {
+	ctx       pilgrim_conf.PilgrimConfigurationRetriever
+	dbAdapter pilgrim_common.PilgrimDbAdapter
+}
+
+func NewPilgrim(ctx pilgrim_conf.PilgrimConfigurationRetriever) *pilgrimImpl {
+	p := new(pilgrimImpl)
+
+	p.ctx = ctx
+	p.dbAdapter = createAdapter(ctx.UrlParts().Driver)
+
+	return p
+}
+
+func createAdapter(driver pilgrim_conf.DbDriver) pilgrim_common.PilgrimDbAdapter {
+	switch driver {
+	case pilgrim_conf.DbDriver_MSSQL:
+		panic("Not implemented")
+	case pilgrim_conf.DbDriver_MariaDB:
+		panic("Not implemented")
+	case pilgrim_conf.DbDriver_MySQL:
+		panic("Not implemented")
+	case pilgrim_conf.DbDriver_Oracle:
+		panic("Not implemented")
+	case pilgrim_conf.DbDriver_Postgres:
+		panic("Not implemented")
+	case pilgrim_conf.DbDriver_SQLite:
+		panic("Not implemented")
+	default:
+		panic("Not implemented")
+	}
+}
+
+func (p *pilgrimImpl) Context() pilgrim_conf.PilgrimConfigurationRetriever {
+	return p.ctx
+}
+
+func (p *pilgrimImpl) Execute() {
+	// TODO
+}

internal/pilgrim_db/postgres_adapter.go

@@ -0,0 +1,7 @@
+package pilgrim_db
+
+import "mvvasilev.dev/pilgrim/internal/pilgrim_conf"
+
+type postgresDbAdapter struct {
+	ctx pilgrim_conf.PilgrimConfigurationRetriever
+}

main.go

@@ -1,9 +1,8 @@
 package main
 
 import (
-	"log"
-
 	"mvvasilev.dev/pilgrim/internal/pilgrim_conf"
+	"mvvasilev.dev/pilgrim/internal/pilgrim_core"
 )
 
 func main() {
@@ -12,5 +11,7 @@ func main() {
 		pilgrim_conf.NewEnvVarContext(),
 	)
 
-	log.Println(pilgrimContext)
+	pilgrim := pilgrim_core.NewPilgrim(pilgrimContext)
+
+	pilgrim.Execute()
 }