package sqlgenerate_test

import (
	"os"
	"testing"

	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"

	"gas_stack/pkg/sqlgenerate"
)

func TestParseSchema(t *testing.T) {
	assert := assert.New(t)
	schema_sql, err := os.ReadFile("../../sample_data/test_schemas/food.sql")
	require.NoError(t, err)

	db := sqlgenerate.InitDB(string(schema_sql))
	schema := sqlgenerate.ParseSchema(db)
	expected_tbls := []string{"food_types", "foods", "units", "ingredients", "recipes", "iterations", "db_version"}
	for _, tbl_name := range expected_tbls {
		_, is_ok := schema[tbl_name]
		assert.True(is_ok)
	}

	foods := schema["foods"]
	assert.Len(foods.Columns, 20)
	assert.Equal(foods.Columns[0].Name, "rowid")
	assert.Equal(foods.Columns[0].Type, "integer")
	assert.Equal(foods.Columns[0].IsNotNull, false) // Explicit not-null
	assert.Equal(foods.Columns[0].IsPrimaryKey, true)
	assert.Equal(foods.Columns[0].IsForeignKey, false)
	assert.Equal(foods.Columns[1].Name, "name")
	assert.Equal(foods.Columns[1].Type, "text")
	assert.Equal(foods.Columns[1].IsNotNull, true)
	assert.Equal(foods.Columns[1].HasDefaultValue, false)
	assert.Equal(foods.Columns[1].IsPrimaryKey, false)
	assert.Equal(foods.Columns[16].Name, "mass")
	assert.Equal(foods.Columns[16].Type, "real")
	assert.Equal(foods.Columns[16].HasDefaultValue, true)
	assert.Equal(foods.Columns[16].DefaultValue, "100")

	ingredients := schema["ingredients"]
	assert.Equal(ingredients.Columns[0].Name, "rowid")
	assert.Equal(ingredients.Columns[0].IsPrimaryKey, true)
	assert.Equal(ingredients.Columns[1].Name, "food_id")
	assert.Equal(ingredients.Columns[1].IsForeignKey, true)
	assert.Equal(ingredients.Columns[1].ForeignKeyTargetTable, "foods")
	assert.Equal(ingredients.Columns[1].ForeignKeyTargetColumn, "rowid")
}