migrations

type AlterColumnNoChangesError struct {
	Table  string
	Column string
}

type BackfillNotPossibleError struct {
	Table string
}

type CallbackFn func(int64)

type CheckConstraint struct {
	// Constraint expression
	Constraint string `json:"constraint"`

	// Name of check constraint
	Name string `json:"name"`
}

type CheckConstraintError struct {
	Table  string
	Column string
	Err    error
}

type Column struct {
	// Check constraint for the column
	Check *CheckConstraint `json:"check,omitempty"`

	// Postgres comment for the column
	Comment *string `json:"comment,omitempty"`

	// Default value for the column
	Default *string `json:"default,omitempty"`

	// Name of the column
	Name string `json:"name"`

	// Indicates if the column is nullable
	Nullable *bool `json:"nullable,omitempty"`

	// Indicates if the column is part of the primary key
	Pk *bool `json:"pk,omitempty"`

	// Foreign key constraint for the column
	References *ForeignKeyReference `json:"references,omitempty"`

	// Postgres type of the column
	Type string `json:"type"`

	// Indicates if the column values must be unique
	Unique *bool `json:"unique,omitempty"`
}

type ColumnAlreadyExistsError struct {
	Table string
	Name  string
}

type ColumnDoesNotExistError struct {
	Table string
	Name  string
}

type ColumnIsNotNullableError struct {
	Table string
	Name  string
}

type ColumnIsNullableError struct {
	Table string
	Name  string
}

type ColumnReferenceError struct {
	Table  string
	Column string
	Err    error
}

type ConstraintAlreadyExistsError struct {
	Table      string
	Constraint string
}

type ConstraintDoesNotExistError struct {
	Table      string
	Constraint string
}

type Duplicator struct {
	// contains filtered or unexported fields
}

type EmptyMigrationError struct{}

type FieldRequiredError struct {
	Name string
}

type ForeignKeyReference struct {
	// Name of the referenced column
	Column string `json:"column"`

	// Name of the foreign key constraint
	Name string `json:"name"`

	// On delete behavior of the foreign key constraint
	OnDelete ForeignKeyReferenceOnDelete `json:"on_delete,omitempty"`

	// Name of the referenced table
	Table string `json:"table"`
}

type ForeignKeyReferenceOnDelete string

type IndexAlreadyExistsError struct {
	Name string
}

type IndexDoesNotExistError struct {
	Name string
}

type InvalidMigrationError struct {
	Reason string
}

type InvalidOnDeleteSettingError struct {
	Name    string
	Setting string
}

type InvalidReplicaIdentityError struct {
	Table    string
	Identity string
}

type IsolatedOperation interface {
	// this operation is isolated when executed on start, cannot be executed with other operations.
	IsIsolated() bool
}

type Migration struct {
	Name string `json:"name"`

	Operations Operations `json:"operations"`
}

type NoDownSQLAllowedError struct{}

type NoUpSQLAllowedError struct{}

type OpAddColumn struct {
	// Column to add
	Column Column `json:"column"`

	// Name of the table
	Table string `json:"table"`

	// SQL expression for up migration
	Up string `json:"up,omitempty"`
}

type OpAlterColumn struct {
	// Add check constraint to the column
	Check *CheckConstraint `json:"check,omitempty"`

	// Name of the column
	Column string `json:"column"`

	// New comment on the column
	Comment nullable.Nullable[string] `json:"comment,omitempty"`

	// Default value of the column
	Default *string `json:"default,omitempty"`

	// SQL expression for down migration
	Down string `json:"down,omitempty"`

	// New name of the column (for rename column operation)
	Name *string `json:"name,omitempty"`

	// Indicates if the column is nullable (for add/remove not null constraint
	// operation)
	Nullable *bool `json:"nullable,omitempty"`

	// Add foreign key constraint to the column
	References *ForeignKeyReference `json:"references,omitempty"`

	// Name of the table
	Table string `json:"table"`

	// New type of the column (for change type operation)
	Type *string `json:"type,omitempty"`

	// Add unique constraint to the column
	Unique *UniqueConstraint `json:"unique,omitempty"`

	// SQL expression for up migration
	Up string `json:"up,omitempty"`
}

type OpChangeType struct {
	Table  string `json:"table"`
	Column string `json:"column"`
	Type   string `json:"type"`
	Up     string `json:"up"`
	Down   string `json:"down"`
}

type OpCreateIndex struct {
	// Names of columns on which to define the index
	Columns []string `json:"columns"`

	// Index name
	Name string `json:"name"`

	// Conditional expression for defining a partial index
	Predicate *string `json:"predicate,omitempty"`

	// Name of table on which to define the index
	Table string `json:"table"`
}

type OpCreateTable struct {
	// Columns corresponds to the JSON schema field "columns".
	Columns []Column `json:"columns"`

	// Postgres comment for the table
	Comment *string `json:"comment,omitempty"`

	// Name of the table
	Name string `json:"name"`
}

type OpDropColumn struct {
	// Name of the column
	Column string `json:"column"`

	// SQL expression for down migration
	Down string `json:"down,omitempty"`

	// Name of the table
	Table string `json:"table"`
}

type OpDropConstraint struct {
	// Name of the column
	Column string `json:"column"`

	// SQL expression for down migration
	Down string `json:"down"`

	// Name of the constraint
	Name string `json:"name"`

	// Name of the table
	Table string `json:"table"`

	// SQL expression for up migration
	Up string `json:"up"`
}

type OpDropIndex struct {
	// Index name
	Name string `json:"name"`
}

type OpDropNotNull struct {
	Table  string `json:"table"`
	Column string `json:"column"`
	Up     string `json:"up"`
	Down   string `json:"down"`
}

type OpDropTable struct {
	// Name of the table
	Name string `json:"name"`
}

type OpName string

type OpRawSQL struct {
	// SQL expression for down migration
	Down string `json:"down,omitempty"`

	// SQL expression will run on complete step (rather than on start)
	OnComplete bool `json:"onComplete,omitempty"`

	// SQL expression for up migration
	Up string `json:"up"`
}

type OpRenameConstraint struct {
	// Name of the constraint
	From string `json:"from"`

	// Name of the table
	Table string `json:"table"`

	// New name of the constraint
	To string `json:"to"`
}

type OpRenameTable struct {
	// Old name of the table
	From string `json:"from"`

	// New name of the table
	To string `json:"to"`
}

type OpSetCheckConstraint struct {
	Table  string          `json:"table"`
	Column string          `json:"column"`
	Check  CheckConstraint `json:"check"`
	Up     string          `json:"up"`
	Down   string          `json:"down"`
}

type OpSetComment struct {
	Table   string  `json:"table"`
	Column  string  `json:"column"`
	Comment *string `json:"comment"`
	Up      string  `json:"up"`
	Down    string  `json:"down"`
}

type OpSetDefault struct {
	Table   string `json:"table"`
	Column  string `json:"column"`
	Default string `json:"default"`
	Up      string `json:"up"`
	Down    string `json:"down"`
}

type OpSetForeignKey struct {
	Table      string              `json:"table"`
	Column     string              `json:"column"`
	References ForeignKeyReference `json:"references"`
	Up         string              `json:"up"`
	Down       string              `json:"down"`
}

type OpSetNotNull struct {
	Table  string `json:"table"`
	Column string `json:"column"`
	Up     string `json:"up"`
	Down   string `json:"down"`
}

type OpSetReplicaIdentity struct {
	// Replica identity to set
	Identity ReplicaIdentity `json:"identity"`

	// Name of the table
	Table string `json:"table"`
}

type OpSetUnique struct {
	Name   string `json:"name"`
	Table  string `json:"table"`
	Column string `json:"column"`
	Up     string `json:"up"`
	Down   string `json:"down"`
}

type Operation interface {
	// Start will apply the required changes to enable supporting the new schema
	// version in the database (through a view)
	// update the given views to expose the new schema version
	// Returns the table that requires backfilling, if any.
	Start(ctx context.Context, conn db.DB, latestSchema string, tr SQLTransformer, s *schema.Schema, cbs ...CallbackFn) (*schema.Table, error)

	// Complete will update the database schema to match the current version
	// after calling Start.
	// This method should be called once the previous version is no longer used.
	Complete(ctx context.Context, conn db.DB, tr SQLTransformer, s *schema.Schema) error

	// Rollback will revert the changes made by Start. It is not possible to
	// rollback a completed migration.
	Rollback(ctx context.Context, conn db.DB, tr SQLTransformer) error

	// Validate returns a descriptive error if the operation cannot be applied to the given schema.
	Validate(ctx context.Context, s *schema.Schema) error
}

type Operations []Operation

type PgRollMigration struct {
	// Name of the migration
	Name *string `json:"name,omitempty"`

	// Operations corresponds to the JSON schema field "operations".
	Operations PgRollOperations `json:"operations"`
}

type PgRollOperation interface{}

type PgRollOperations []interface{}

type ReplicaIdentity struct {
	// Name of the index to use as replica identity
	Index string `json:"index"`

	// Type of replica identity
	Type string `json:"type"`
}

type RequiresSchemaRefreshOperation interface {
	// this operation requires the resulting schema to be refreshed when executed on start
	RequiresSchemaRefresh()
}

type SQLTransformer interface {
	// TransformSQL will transform the given SQL statement.
	TransformSQL(sql string) (string, error)
}

type SQLTransformerFunc func(string) (string, error)

type TableAlreadyExistsError struct {
	Name string
}

type TableDoesNotExistError struct {
	Name string
}

type TriggerDirection string

type UniqueConstraint struct {
	// Name of unique constraint
	Name string `json:"name"`
}