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// Copyright 2025 WIT.COM Inc Licensed GPL 3.0

package forgepb

import (
	"errors"
	"os"
	"os/user"
	"path/filepath"

	"go.wit.com/lib/ENV"
	"go.wit.com/lib/cobol"
	"go.wit.com/lib/config"
	"go.wit.com/log"
)

/* better syntax from gin

Default returns an Engine instance with the Logger and Recovery middleware already attached.
func Default(opts ...OptionFunc) *Engine {
	engine := New()
	engine.Use(Logger(), Recovery())
	return engine.With(opts...)
}

*/

func Init() (*Forge, error) {
	f := new(Forge)
	f.Config = NewForgeConfigs()
	err := f.Config.loadConfig()
	err = errors.Join(err, f.postInit())
	return f, err
}

func InitByAppname(argname string) (*Forge, error) {
	log.Info("InitByAppname() IS DEPRECATED AND DOESNT DO ANYTHING")
	return Init()
}

func InitByFullpath(filename string) (*Forge, error) {
	f := new(Forge)
	cfg := NewForgeConfigs()
	cfg.Filename = filename
	err := config.ReLoad(cfg)
	f.Config = cfg

	err = errors.Join(err, f.postInit())
	if err != nil {
		log.Info("forge.InitByFullpath() error:", filename, err)
	}
	return f, err
}

// saves the config if there have been changes
func (f *Forge) Close() error {
	if err := f.Save(); err != nil {
		return err
	}
	return nil
}

func (f *Forge) postInit() error {
	// always define
	if ENV.Get("username") == "" {
		usr, _ := user.Current()
		ENV.SetGlobal("lib/forgepb", "username", usr.Username)
		ENV.Save()
	}

	// always define
	if ENV.Get("homeDir") == "" {
		homeDir, _ := os.UserHomeDir()
		ENV.SetGlobal("lib/forgepb", "homeDir", homeDir)
		ENV.Save()
	}

	// always define
	if ENV.Get("gopath") == "" {
		gopath := filepath.Join(ENV.Get("homedir"), "go/src")
		ENV.SetGlobal("lib/forgepb", "gopath", gopath)
	}

	// always set f.mode
	switch ENV.Get("Mode") {
	case "NORMAL":
		f.mode = ForgeMode_NORMAL
	case "CLEAN":
		f.mode = ForgeMode_CLEAN
	case "MASTER":
		f.mode = ForgeMode_MASTER
	default:
		f.mode = ForgeMode_NEWUSER
	}

	// todo: play with these / determine good values based on user's machine
	if cobol.Int(ENV.Get("RillX")) == 0 {
		ENV.SetGlobal("lib/forgepb", "RillX", "10")
	}
	if cobol.Int(ENV.Get("RillY")) == 0 {
		ENV.SetGlobal("lib/forgepb", "RillY", "20")
		ENV.Save()
	}

	// create an initial repos.pb file
	// panic() here? // warning? // (probably not. it's just the repos.pb cache file
	err := f.reposCacheLoad() // loads the file from ~/.cache/forge/repos.pb
	if err == nil {
		log.Printf("forge loaded %s file with len(%d) repos\n", f.Repos.Filename, f.Repos.Len())
	} else {
		log.Printf("forge failed to load %s file with len(%d) repos err=(%v)\n", f.Repos.Filename, f.Repos.Len(), err)
		panic("failed to load repos.pb")
	}
	err = f.patchesCacheLoad() // loads the file from ~/.cache/forge/patches.pb
	if err == nil {
		// log.Printf("forge loaded %s file with len(%d) repos\n", f.Repos.Filename, f.Repos.Len())
	} else {
		log.Printf("forge failed to load %s file with len(%d) patches err=(%v)\n", f.Patches.Filename, f.Patches.Len(), err)
		panic("failed to load repos.pb")
	}
	return err
}