efritz/ij

package config

import (
    "encoding/json"
    "fmt"
)

type BuildTask struct {
    TaskMeta
    Dockerfile string   `json:"dockerfile,omitempty"`
    Target     string   `json:"target,omitempty"`
    Tags       []string `json:"tags,omitempty"`
    Labels     []string `json:"labels,omitempty"`
}

func (t *BuildTask) GetType() string {
    return "build"
}

func (t *BuildTask) Extend(task Task) error {
    parent, ok := task.(*BuildTask)
    if !ok {
        return fmt.Errorf(
            "task %s extends %s, but they have different types",
            t.Name,
            task.GetName(),
        )
    }

    t.extendMeta(parent.TaskMeta)
    t.Dockerfile = extendString(t.Dockerfile, parent.Dockerfile)
    t.Target = extendString(t.Target, parent.Target)
    t.Tags = append(parent.Tags, t.Tags...)
    t.Labels = append(parent.Labels, t.Labels...)
    return nil
}

func (t *BuildTask) MarshalJSON() ([]byte, error) {
    type Alias BuildTask

    return json.Marshal(&struct {
        *Alias
        Type string `json:"type"`
    }{
        Alias: (*Alias)(t),
        Type:  t.GetType(),
    })
}