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path: root/internal/templates/templates.go
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package templates

import (
	"bytes"
	"text/template"
)

var serviceTemplate = `[Unit]
Description={{.Name}}
After=network.target

[Service]
Type=simple
User={{.User}}
WorkingDirectory={{.WorkDir}}
EnvironmentFile={{.EnvFile}}
ExecStart={{.BinaryPath}} --port={{.Port}}
Restart=always
RestartSec=5s
NoNewPrivileges=true
PrivateTmp=true

[Install]
WantedBy=multi-user.target
`

var appCaddyTemplate = `{{.Domain}} {
    reverse_proxy 127.0.0.1:{{.Port}}
}
`

var staticCaddyTemplate = `{{.Domain}} {
    root * {{.RootDir}}
    file_server
    encode gzip
}
`

// SystemdService generates a systemd service unit file
func SystemdService(data map[string]string) (string, error) {
	tmpl, err := template.New("service").Parse(serviceTemplate)
	if err != nil {
		return "", err
	}

	var buf bytes.Buffer
	if err := tmpl.Execute(&buf, data); err != nil {
		return "", err
	}

	return buf.String(), nil
}

// AppCaddy generates a Caddy config for a Go app
func AppCaddy(data map[string]string) (string, error) {
	tmpl, err := template.New("caddy").Parse(appCaddyTemplate)
	if err != nil {
		return "", err
	}

	var buf bytes.Buffer
	if err := tmpl.Execute(&buf, data); err != nil {
		return "", err
	}

	return buf.String(), nil
}

// StaticCaddy generates a Caddy config for a static site
func StaticCaddy(data map[string]string) (string, error) {
	tmpl, err := template.New("caddy").Parse(staticCaddyTemplate)
	if err != nil {
		return "", err
	}

	var buf bytes.Buffer
	if err := tmpl.Execute(&buf, data); err != nil {
		return "", err
	}

	return buf.String(), nil
}