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|
package cli
import (
"bufio"
"fmt"
"io"
"os"
"os/exec"
"path/filepath"
"strings"
tea "github.com/charmbracelet/bubbletea"
"github.com/hachem-wtf/benson/internal/config"
"github.com/hachem-wtf/benson/internal/modrinth"
)
var (
serverDir = "server"
modsDir = filepath.Join("server", "mods")
)
var postGenerateDeleteList = []string{
"audioplayer_uploads",
"config",
"cache",
"world",
"logs",
"banned-players.json",
"server.properties",
"banned-ips.json",
"usercache.json",
"whitelist.json",
"ops.json",
"eula.txt",
}
type streamMsg struct{ text string }
type streamDoneMsg struct{ text string }
func waitForEvent(ch chan tea.Msg) tea.Cmd {
return func() tea.Msg {
return <-ch
}
}
func runGenerate(m *model) tea.Cmd {
m.busy = true
ch := make(chan tea.Msg, 256)
m.events = ch
cfg := m.cfg
go generateWorker(cfg, ch)
return tea.Batch(m.spin.Tick, waitForEvent(ch))
}
func generateWorker(cfg *config.Config, ch chan<- tea.Msg) {
emit := func(s string) { ch <- streamMsg{s} }
emit(headingStyle.Render("Generating server for MC " + cfg.MinecraftVersion))
if err := os.MkdirAll(modsDir, 0o755); err != nil {
ch <- streamDoneMsg{errorStyle.Render("Failed to create directories: " + err.Error())}
return
}
client := modrinth.NewClient()
downloaded, failed := 0, 0
for _, slug := range cfg.ModrinthMods {
versions, err := client.GetVersions(slug)
if err != nil {
failed++
emit(" " + errorStyle.Render("✗ ") + slug + mutedStyle.Render(" — "+err.Error()))
continue
}
match := modrinth.CompatibleVersion(versions, cfg.MinecraftVersion, "fabric")
if match == nil || len(match.Files) == 0 {
failed++
emit(" " + errorStyle.Render("✗ ") + slug + mutedStyle.Render(" — no fabric build for MC "+cfg.MinecraftVersion))
continue
}
file := match.Files[0]
if err := client.Download(file.URL, filepath.Join(modsDir, file.Filename)); err != nil {
failed++
emit(" " + errorStyle.Render("✗ ") + slug + mutedStyle.Render(" — "+err.Error()))
continue
}
downloaded++
emit(" " + successStyle.Render("✓ ") + file.Filename)
}
emit(mutedStyle.Render(fmt.Sprintf("Downloaded %d mods · %d failed", downloaded, failed)))
emit(headingStyle.Render("Downloading Fabric server"))
serverURL := fmt.Sprintf(
"https://meta.fabricmc.net/v2/versions/loader/%s/%s/%s/server/jar",
cfg.MinecraftVersion, cfg.FabricLoaderVersion, cfg.LoaderMetaVersion,
)
if err := client.Download(serverURL, filepath.Join(serverDir, "server.jar")); err != nil {
ch <- streamDoneMsg{errorStyle.Render("Failed to download Fabric server: " + err.Error())}
return
}
emit(" " + successStyle.Render("✓ ") + "server.jar")
if err := runServerAutoStop(cfg, emit); err != nil {
ch <- streamDoneMsg{errorStyle.Render("Server run failed: " + err.Error())}
return
}
removed := deletePostGenerate()
emit(mutedStyle.Render(fmt.Sprintf("Removed %d generated items", removed)))
ch <- streamDoneMsg{successStyle.Render("Generation complete.")}
}
func runServerAutoStop(cfg *config.Config, emit func(string)) error {
eulaPath := filepath.Join(serverDir, "eula.txt")
if _, err := os.Stat(eulaPath); os.IsNotExist(err) {
if err := os.WriteFile(eulaPath, []byte("eula=true\n"), 0o644); err != nil {
return err
}
}
java := cfg.JavaPath
if java == "" {
java = "java"
}
emit(headingStyle.Render("Starting server (auto-stops after loading)"))
cmd := exec.Command(java, "-jar", "server.jar", "nogui")
cmd.Dir = serverDir
stdin, err := cmd.StdinPipe()
if err != nil {
return err
}
pr, pw, err := os.Pipe()
if err != nil {
return err
}
cmd.Stdout = pw
cmd.Stderr = pw
if err := cmd.Start(); err != nil {
pw.Close()
return err
}
pw.Close()
scanner := bufio.NewScanner(pr)
scanner.Buffer(make([]byte, 0, 64*1024), 1024*1024)
stopped := false
for scanner.Scan() {
line := scanner.Text()
emit(mutedStyle.Render(" │ " + line))
if !stopped && strings.Contains(line, "Done") {
stopped = true
emit(successStyle.Render(" Server loaded, stopping…"))
io.WriteString(stdin, "stop\n")
}
}
stdin.Close()
if err := cmd.Wait(); err != nil && !stopped {
return err
}
emit(successStyle.Render(" Server stopped."))
return nil
}
func deletePostGenerate() int {
removed := 0
for _, item := range postGenerateDeleteList {
path := filepath.Join(serverDir, item)
if _, err := os.Stat(path); err != nil {
continue
}
if err := os.RemoveAll(path); err == nil {
removed++
}
}
return removed
}
|
