Make it use the gas stack instead of implementing its own schema reading

pkg/checks/check.go

@@ -41,7 +41,7 @@ var Checks = map[string]Check{
 		           column_name
 		      from columns
 		     where columns."notnull" = 0
-		       and fk_target_column is null
+		       and is_foreign_key = 0
 		       and is_primary_key = 0 -- primary keys are automatically not-null, but aren't listed as such in pragma_table_info
 		`,
 		Explanation: "All columns should be marked as `not null` unless they are foreign keys.  (Primary keys are\n" +
@@ -55,7 +55,7 @@ var Checks = map[string]Check{
 	// 	           column_name
 	// 	      from columns
 	// 	     where dflt_value is null
-	// 	       and fk_target_column is null
+	// 	       and is_foreign_key = 0
 	// 	       and is_primary_key = 0;
 	// 	`,
 	// 	Explanation: "All columns should have a default value specified, unless they are foreign keys or primary keys.",
@@ -113,7 +113,7 @@ var Checks = map[string]Check{
 			         where column_name = 'rowid'
 			           and is_primary_key != 0 -- 'pk' is either 0, or the 1-based index of the column within the primary key
 		    ), foreign_keys as (
-			        select * from columns where fk_target_column is not null
+			        select * from columns where is_foreign_key = 1
 		    )
 		select 'Foreign keys should point to indexed columns' as error_msg,
 		       foreign_keys.table_name as table_name,

pkg/checks/target.go

@@ -6,47 +6,17 @@ import (
 
 	"github.com/jmoiron/sqlx"
 	_ "github.com/mattn/go-sqlite3"
+
+	"git.offline-twitter.com/offline-labs/gas-stack/pkg/schema"
 )
 
 // OpenSchema opens a SQLite database in memory, executes the schema against it, and adds some views
 func OpenSchema(filepath string) (*sqlx.DB, error) {
-	// Open a SQLite database in memory
-	db, err := sqlx.Open("sqlite3", ":memory:")
-	if err != nil {
-		return nil, fmt.Errorf("failed to open in-memory database: %w", err)
-	}
-
 	// Read the SQL file
 	sqlBytes, err := os.ReadFile(filepath)
 	if err != nil {
 		return nil, fmt.Errorf("failed to read SQL file: %w", err)
 	}
 
-	// Execute the SQL statements
-	db.MustExec(string(sqlBytes))
-
-	// Execute the SQL statements for creating views
-	db.MustExec(`
-		create view tables as
-			select l.*
-			from sqlite_schema s
-		left join pragma_table_list l on s.name = l.name
-			where s.type = 'table';
-
-
-		create view columns as
-			select tables.name as table_name,
-				table_info.name as column_name,
-				table_info.type as column_type,
-				"notnull",
-				dflt_value,
-				pk as is_primary_key,
-				fk."table" as fk_target_table,
-				fk."to" as fk_target_column
-			from tables
-			join pragma_table_info(tables.name) as table_info
-		left join pragma_foreign_key_list(tables.name) as fk on fk."from" = column_name;
-	`)
-
-	return db, nil
+	return schema.InitDB(string(sqlBytes)), nil
 }