// Copyright 2018 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

package botanist

import (
	"encoding/json"
	"os"
	"strings"

	"fuchsia.googlesource.com/tools/pdu"
)

const (
	netbootFilenamePrefix = "<<netboot>>"
	KernelFilename        = netbootFilenamePrefix + "kernel.bin"
	RamdiskFilename       = netbootFilenamePrefix + "ramdisk.bin"
	CmdlineFilename       = netbootFilenamePrefix + "cmdline"

	imageFilenamePrefix = "<<image>>"
	EFIFilename         = imageFilenamePrefix + "efi.img"
	KerncFilename       = imageFilenamePrefix + "kernc.img"
	FVMFilename         = imageFilenamePrefix + "sparse.fvm"

	TestSummaryFilename = "summary.json"
)

// StringsFlag implements flag.Value so it may be treated as a flag type.
type StringsFlag []string

// Set implements flag.Value.Set.
func (s *StringsFlag) Set(val string) error {
	*s = append(*s, val)
	return nil
}

// Strings implements flag.Value.String.
func (s *StringsFlag) String() string {
	if s == nil {
		return ""
	}
	return strings.Join([]string(*s), ", ")
}

// DeviceProperties contains static properties of a hardware device.
type DeviceProperties struct {
	// Nodename is the hostname of the device that we want to boot on.
	Nodename string `json:"nodename"`

	// PDU is the configuration for the attached Power Distribution Unit.
	PDU *pdu.Config `json:"pdu,omitempty"`
}

// LoadDeviceProperties unmarshalls the DeviceProperties found in a given file.
func LoadDeviceProperties(propertiesFile string, properties *DeviceProperties) error {
	file, err := os.Open(propertiesFile)
	if err != nil {
		return err
	}

	return json.NewDecoder(file).Decode(properties)
}

// TestDetails contain test specific information
type TestDetails struct {
	Name       string `json:"name"`
	OutputFile string `json:"output_file"`
	Result     string `json:"result"`
	DataSinks  map[string][]struct {
		Name string `json:"name"`
		File string `json:"file"`
	} `json:"data_sinks,omitempty"`
}

// TestSummary is the runtest summary output file format.
type TestSummary struct {
	Tests   []TestDetails     `json:"tests"`
	Outputs map[string]string `json:"outputs,omitempty"`
}