mirror of
https://github.com/MichaelMure/git-bug.git
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109 lines
2.7 KiB
Go
109 lines
2.7 KiB
Go
package bug
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import (
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"encoding/json"
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"fmt"
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"github.com/pkg/errors"
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"github.com/MichaelMure/git-bug/entity"
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"github.com/MichaelMure/git-bug/identity"
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"github.com/MichaelMure/git-bug/util/text"
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)
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var _ Operation = &SetMetadataOperation{}
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type SetMetadataOperation struct {
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OpBase
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Target entity.Id `json:"target"`
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NewMetadata map[string]string `json:"new_metadata"`
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}
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func (op *SetMetadataOperation) Id() entity.Id {
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return idOperation(op, &op.OpBase)
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}
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func (op *SetMetadataOperation) Apply(snapshot *Snapshot) {
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for _, target := range snapshot.Operations {
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if target.Id() == op.Target {
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// Apply the metadata in an immutable way: if a metadata already
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// exist, it's not possible to override it.
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for key, value := range op.NewMetadata {
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target.setExtraMetadataImmutable(key, value)
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}
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return
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}
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}
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}
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func (op *SetMetadataOperation) Validate() error {
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if err := op.OpBase.Validate(op, SetMetadataOp); err != nil {
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return err
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}
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if err := op.Target.Validate(); err != nil {
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return errors.Wrap(err, "target invalid")
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}
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for key, val := range op.NewMetadata {
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if !text.SafeOneLine(key) {
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return fmt.Errorf("metadata key is unsafe")
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}
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if !text.Safe(val) {
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return fmt.Errorf("metadata value is not fully printable")
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}
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}
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return nil
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}
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// UnmarshalJSON is a two step JSON unmarshalling
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// This workaround is necessary to avoid the inner OpBase.MarshalJSON
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// overriding the outer op's MarshalJSON
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func (op *SetMetadataOperation) UnmarshalJSON(data []byte) error {
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// Unmarshal OpBase and the op separately
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base := OpBase{}
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err := json.Unmarshal(data, &base)
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if err != nil {
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return err
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}
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aux := struct {
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Target entity.Id `json:"target"`
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NewMetadata map[string]string `json:"new_metadata"`
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}{}
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err = json.Unmarshal(data, &aux)
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if err != nil {
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return err
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}
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op.OpBase = base
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op.Target = aux.Target
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op.NewMetadata = aux.NewMetadata
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return nil
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}
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// Sign post method for gqlgen
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func (op *SetMetadataOperation) IsAuthored() {}
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func NewSetMetadataOp(author identity.Interface, unixTime int64, target entity.Id, newMetadata map[string]string) *SetMetadataOperation {
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return &SetMetadataOperation{
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OpBase: newOpBase(SetMetadataOp, author, unixTime),
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Target: target,
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NewMetadata: newMetadata,
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}
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}
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// Convenience function to apply the operation
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func SetMetadata(b Interface, author identity.Interface, unixTime int64, target entity.Id, newMetadata map[string]string) (*SetMetadataOperation, error) {
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SetMetadataOp := NewSetMetadataOp(author, unixTime, target, newMetadata)
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if err := SetMetadataOp.Validate(); err != nil {
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return nil, err
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}
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b.Append(SetMetadataOp)
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return SetMetadataOp, nil
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}
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