cloudfoundry/cf-k8s-controllers

package payloads

import (
    "fmt"

    "code.cloudfoundry.org/korifi/api/payloads/validation"
    jellidation "github.com/jellydator/validation"
)

type Lifecycle struct {
    Type string         `json:"type"`
    Data *LifecycleData `json:"data"`
}

func (l Lifecycle) Validate() error {
    lifecycleDataRule := jellidation.By(func(value any) error {
        data, ok := value.(*LifecycleData)
        if !ok {
            return fmt.Errorf("%T is not supported, LifecycleData is expected", value)
        }

        if l.Type == "docker" {
            return data.ValidateDockerLifecycleData()
        }

        if l.Type == "buildpack" {
            return data.ValidateBuildpackLifecycleData()
        }

        return nil
    })

    return jellidation.ValidateStruct(&l,
        jellidation.Field(&l.Type,
            jellidation.Required,
            validation.OneOf("buildpack", "docker")),
        jellidation.Field(&l.Data, jellidation.Required, lifecycleDataRule),
    )
}

type LifecycleData struct {
    Buildpacks []string `json:"buildpacks,omitempty"`
    Stack      string   `json:"stack,omitempty"`
}

func (d LifecycleData) ValidateBuildpackLifecycleData() error {
    return jellidation.ValidateStruct(&d,
        jellidation.Field(&d.Stack, jellidation.Required),
    )
}

func (d LifecycleData) ValidateDockerLifecycleData() error {
    return jellidation.Validate(&d, jellidation.In(LifecycleData{}).Error("must be an empty object"))
}

type LifecyclePatch struct {
    Type string              `json:"type"`
    Data *LifecycleDataPatch `json:"data"`
}

func (p LifecyclePatch) Validate() error {
    return jellidation.ValidateStruct(&p,
        jellidation.Field(&p.Type, validation.OneOf("buildpack", "docker")),
        jellidation.Field(&p.Data, jellidation.NotNil),
    )
}

type LifecycleDataPatch struct {
    Buildpacks *[]string `json:"buildpacks"`
    Stack      string    `json:"stack"`
}