// Copyright 2019 Drone IO, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package core

import "context"

type (
	// Step represents an individual step in the stage.
	Step struct {
		ID        int64    `json:"id"`
		StageID   int64    `json:"step_id"` // this is a typo, fixing it has far reaching ramifications. It should only be attempted in a major version change
		Number    int      `json:"number"`
		Name      string   `json:"name"`
		Status    string   `json:"status"`
		Error     string   `json:"error,omitempty"`
		ErrIgnore bool     `json:"errignore,omitempty"`
		ExitCode  int      `json:"exit_code"`
		Started   int64    `json:"started,omitempty"`
		Stopped   int64    `json:"stopped,omitempty"`
		Version   int64    `json:"version"`
		DependsOn []string `json:"depends_on,omitempty"`
		Image     string   `json:"image,omitempty"`
		Detached  bool     `json:"detached,omitempty"`
		Schema    string   `json:"schema,omitempty"`
	}

	// StepStore persists build step information to storage.
	StepStore interface {
		// List returns a build stage list from the datastore.
		List(context.Context, int64) ([]*Step, error)

		// Find returns a build stage from the datastore by ID.
		Find(context.Context, int64) (*Step, error)

		// FindNumber returns a stage from the datastore by number.
		FindNumber(context.Context, int64, int) (*Step, error)

		// Create persists a new stage to the datastore.
		Create(context.Context, *Step) error

		// Update persists an updated stage to the datastore.
		Update(context.Context, *Step) error
	}
)

// IsDone returns true if the step has a completed state.
func (s *Step) IsDone() bool {
	switch s.Status {
	case StatusWaiting,
		StatusPending,
		StatusRunning,
		StatusBlocked:
		return false
	default:
		return true
	}
}