asteris-llc/converge

// Copyright © 2016 Asteris, LLC
//
// 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 control

import (
    "fmt"

    "github.com/asteris-llc/converge/resource"
    "golang.org/x/net/context"
)

// CasePreparer contains generated case macro information
type CasePreparer struct {
    Name string `hcl:"name"`
}

// Prepare does stuff
func (c *CasePreparer) Prepare(ctx context.Context, r resource.Renderer) (resource.Task, error) {
    return &CaseTask{
        Name: c.Name,
    }, nil
}

// CaseTask represents a task and is used to determine whether a conditional
// task should evaluate or not
type CaseTask struct {
    Name   string
    parent *SwitchTask
}

// IsDefault returns true if the case is a default statement
func (c *CaseTask) IsDefault() bool {
    if c == nil {
        return false
    }
    return c.Name == keywords["default"]
}

// SetParent set's the parent of a case statement
func (c *CaseTask) SetParent(s *SwitchTask) {
    c.parent = s
}

// GetParent gets the parent of a case
func (c *CaseTask) GetParent() *SwitchTask {
    return c.parent
}

// Check does stuff
func (c *CaseTask) Check(context.Context, resource.Renderer) (resource.TaskStatus, error) {
    return &resource.Status{}, nil
}

// Apply does stuff
func (c *CaseTask) Apply(context.Context) (resource.TaskStatus, error) {
    return &resource.Status{}, nil
}

func (c *CaseTask) String() string {
    if c == nil {
        return "<nil>"
    }
    fmtStr := `Case:
    Name: %s
    Parent: %p
`
    return fmt.Sprintf(fmtStr, c.Name, c.GetParent())
}