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path: root/clone.go
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package main

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

	"go.wit.com/lib/gui/shell"
	"go.wit.com/lib/protobuf/gitpb"
	"go.wit.com/log"
)

func clone(gopath string) (*gitpb.Repo, error) {
	// if the user defined a repo, attempt to download it now
	if gopath == "" {
		// nothing to clone
		// user probably wants to --recursive on current working dir
		return nil, errors.New("gopath was blank")
	}
	os.Setenv("REPO_AUTO_CLONE", "true")
	// pb, _ := forge.NewGoPath(gopath)
	check := forge.Repos.FindByGoPath(gopath)
	if check != nil {
		if check.IsValid() {
			// repo already exists and is valid
			return check, nil
		}
	}
	pb, err := forge.Clone(gopath)
	if err != nil {
		log.Info("clone() could not download err:", err)
		return nil, err
	}

	if err := makeValidGoSum(pb); err != nil {
		return nil, err
	}

	// double check it actually downloaded
	fullgitdir := filepath.Join(forge.GetGoSrc(), gopath, ".git")
	if !shell.IsDir(fullgitdir) {
		log.Info("repo cloned failed", filepath.Join(forge.GetGoSrc(), gopath))
		return nil, errors.New(fullgitdir + " was not created")
	}
	log.Info("go-clone clone() onward and upward")
	return pb, nil
}

// really only does go.sum things
// so not 'really' recursive
// but that is because go.sum is supposed
// to have everything required in it
func recursiveClone(check *gitpb.Repo) error {
	var good int
	var bad int

	badmap := make(map[string]error)

	if check == nil {
		return errors.New("repo was nil")
	}
	log.Info("STARTING RECURSIVE CLONE", check.GoPath)
	log.Info("STARTING RECURSIVE CLONE", check.GoPath)
	if check.GoPrimitive {
		log.Info("repo is a primitive", check.GoPath)
		// go primitive repos are "pure"
		return nil
	}

	// if just cloned, parse the go.sum file for deps
	check.ParseGoSum()

	if check.GoDeps == nil {
		log.Info("repo godeps == nil", check.GoPath)
		return errors.New("go.sum is missing?")
	}

	// probably this should never be 0 because GoPrimitive should have been true otherwise
	if check.GoDeps.Len() == 0 {
		log.Info("repo len(godeps) == 0", check.GoPath)
		return errors.New("go.sum never parsed?")
	}

	log.Info("deps for", check.GoPath, "len()", check.GoDeps.Len())
	deps := check.GoDeps.SortByGoPath()
	for deps.Scan() {
		depRepo := deps.Next()
		log.Info("download:", depRepo.GoPath)
		_, err := clone(depRepo.GoPath)
		if err != nil {
			log.Info("recursiveClone() could not download", depRepo.GoPath)
			log.Info("err:", err)
			bad += 1
			badmap[depRepo.GoPath] = err
		} else {
			log.Info("downloaded", depRepo.GoPath)
			good += 1
		}
	}
	log.Info("got", good, "repos", "failed on", bad, "repos")
	if bad != 0 {
		log.Info("clone() ERROR len(badmap)", len(badmap))
		for gopath, err := range badmap {
			log.Info("clone() ERROR", gopath, err)
		}
		if !argv.Ignore {
			return errors.New("clone failed on some repos")
		}
	}
	return nil
}

func makeValidGoSum(check *gitpb.Repo) error {
	if check.Exists("go.mod") {
		log.Info("makeValidGoSum() attempt SetPrimitive()")
		if err := check.SetPrimitive(); err != nil {
			log.Info("SetPrimitive() failed", err)
			return err
		}
	}
	if check.GoPrimitive {
		log.Info(check.GoPath, "is a golang primitive! no need to parse go.sum because there is not one!")
		return nil
	}
	// attempt to grab the notes
	check.Run([]string{"git", "fetch", "origin", "refs/notes/*:refs/notes/*"})

	// first try to generate go.mod & go.sum with go-mod-clean
	if err := check.ValidGoSum(); err != nil {
		log.Info("try running go-mod-clean")
		// update go.sum and go.mod
		if err := check.RunStrict([]string{"go-mod-clean"}); err != nil {
			log.Info("")
			log.Info("Do you have go-mod-clean? Otherwise:")
			log.Info("  go install go.wit.com/apps/go-mod-clean@latest")
			log.Info("")
		}
	}
	// if this fails, just use go mod
	if err := check.ValidGoSum(); err != nil {
		cmd := []string{"go", "mod", "init", check.GoPath}
		log.Info("try running", cmd)
		if err := check.RunStrict(cmd); err != nil {
			log.Info("go mod init failed", err)
		}
		if check.Exists("go.mod") {
			if err := check.SetPrimitive(); err != nil {
				return err
			}
		}
		if check.GoPrimitive {
			log.Info(check.GoPath, "is a golang primitive! no need to parse go.sum because there is not one!")
			return nil
		}
		if err := check.RunStrict([]string{"go", "mod", "tidy"}); err != nil {
			log.Info("go mod tidy failed", err)
		}
		panic("fucknuts")
	}
	if err := check.ValidGoSum(); err != nil {
		// have to give up. can't recursive clone without go.mod file
		log.Info("could not generate valid go.sum file")
		return errors.New(fmt.Sprintf("could have been %v", err))
	}
	check.ParseGoSum()
	return nil
}