package lagoon

import (
	"github.com/go-gormigrate/gormigrate/v2"
	"gorm.io/gorm"
)

// DeferredHistoryID is the history id of the deferred-binding migration set;
// its gormigrate table is summer_migrations_summercms_deferred.
const DeferredHistoryID = "summercms.deferred"

// DeferredBindingMigrations creates WinterCMS's deferred_bindings table,
// folded from winter/storm's 2013_10_01_000001_Db_Deferred_Bindings.php and
// 2021_01_19_000001_Db_Add_Pivot_Data_To_Deferred_Bindings.php. One column is
// added: backend_user_id, the backend admin who owns the binding, so a
// session key replayed by another admin matches nothing. master_type and
// slave_type hold morph type strings (see MorphType), never PHP class names
// of framework internals. Rolling the set back drops the table.
var DeferredBindingMigrations = []*gormigrate.Migration{
	{
		ID: "202610020001_create_deferred_bindings",
		Migrate: func(tx *gorm.DB) error {
			stmts := []string{
				`CREATE TABLE deferred_bindings (
	id SERIAL PRIMARY KEY,
	master_type TEXT NOT NULL,
	master_field TEXT NOT NULL,
	slave_type TEXT NOT NULL,
	slave_id TEXT NOT NULL,
	pivot_data TEXT,
	session_key TEXT NOT NULL,
	is_bind BOOLEAN NOT NULL DEFAULT TRUE,
	backend_user_id INTEGER NOT NULL,
	created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
	updated_at TIMESTAMPTZ NOT NULL DEFAULT NOW()
)`,
				`CREATE INDEX deferred_bindings_master_type_index ON deferred_bindings (master_type)`,
				`CREATE INDEX deferred_bindings_master_field_index ON deferred_bindings (master_field)`,
				`CREATE INDEX deferred_bindings_slave_type_index ON deferred_bindings (slave_type)`,
				`CREATE INDEX deferred_bindings_slave_id_index ON deferred_bindings (slave_id)`,
				`CREATE INDEX deferred_bindings_session_lookup_index ON deferred_bindings (session_key, backend_user_id, master_type)`,
				`CREATE INDEX deferred_bindings_created_at_index ON deferred_bindings (created_at)`,
			}
			for _, stmt := range stmts {
				if err := tx.Exec(stmt).Error; err != nil {
					return err
				}
			}
			return nil
		},
		Rollback: func(tx *gorm.DB) error {
			return tx.Exec("DROP TABLE IF EXISTS deferred_bindings").Error
		},
	},
}