// Copyright 2023 Woodpecker Authors
//
// 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 plugin

import (
	"os"

	"github.com/urfave/cli/v3"
)

// System defines runtime metadata for a ci/cd system.
type System struct {
	Name     string `json:"name,omitempty"`
	Host     string `json:"host,omitempty"`
	Platform string `json:"arch,omitempty"`
	Version  string `json:"version,omitempty"`
	URL      string `json:"url,omitempty"`

	// Deprecated: Please use URL instead.
	Link string `json:"link,omitempty"`
}

func systemFlags() []cli.Flag {
	return []cli.Flag{
		&cli.StringFlag{
			Name:  "system.name",
			Usage: "system name",
			Sources: cli.EnvVars(
				"CI_SYSTEM_NAME",
			),
		},
		&cli.StringFlag{
			Name:  "system.host",
			Usage: "system host",
			Sources: cli.EnvVars(
				"CI_SYSTEM_HOST",
				"DRONE_SYSTEM_HOST",
				"DRONE_SYSTEM_HOSTNAME",
			),
		},
		&cli.StringFlag{
			Name:    "system.url",
			Aliases: []string{"system.link"},
			Usage:   "system url",
			Sources: cli.EnvVars(
				"CI_SYSTEM_URL",
				"CI_SYSTEM_LINK",
			),
		},
		&cli.StringFlag{
			Name:  "system.arch",
			Usage: "system arch",
			Sources: cli.EnvVars(
				"CI_SYSTEM_PLATFORM",
				"DRONE_STAGE_ARCH",
			),
		},
		&cli.StringFlag{
			Name:  "system.version",
			Usage: "system version",
			Sources: cli.EnvVars(
				"CI_SYSTEM_VERSION",
				"DRONE_SYSTEM_VERSION",
			),
		},
	}
}

func systemFromContext(c *cli.Command) System {
	url := c.String("system.url")
	host := c.String("system.host")
	if url == "" && host != "" {
		// Alternative url format used by Drone.
		proto := os.Getenv("DRONE_SYSTEM_PROTO")
		if proto != "" {
			url = proto + "://" + host
		}
	}
	return System{
		Name:     c.String("system.name"),
		Host:     host,
		URL:      url,
		Link:     url,
		Platform: c.String("system.arch"),
		Version:  c.String("system.version"),
	}
}