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path: root/redoGoMod.go
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package main

// recreates the go.mod and go.sum files

import (
	"errors"
	"os"

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

// remove every go.mod and go.sum
// testing to see where this stuff is coming from
func eraseGoMod(repo *gitpb.Repo) {
	// unset the go development ENV var to generate release files
	if err := repo.StrictRun([]string{"rm", "-f", "go.mod", "go.sum"}); err != nil {
		log.Warn(repo.GoPath, "rm go.mod go.sum failed", err)
	}
}

// sets the required golang version in go.mod
func setGoVersion(repo *gitpb.Repo, version string) error {
	// most things should build with golang after 1.21
	if err := repo.StrictRun([]string{"go", "mod", "edit", "-go=" + version}); err != nil {
		log.Warn(repo.GoPath, "go mod edit failed", err)
		return err
	}
	return nil
}

// wrapper around 'go mod init' and 'go mod tidy'
func redoGoMod(repo *gitpb.Repo) error {
	// unset the go development ENV var to generate release files
	os.Unsetenv("GO111MODULE")
	if err := repo.StrictRun([]string{"rm", "-f", "go.mod", "go.sum"}); err != nil {
		log.Warn("rm go.mod go.sum failed", err)
		return err
	}
	if err := repo.StrictRun([]string{"go", "mod", "init", repo.GoPath}); err != nil {
		log.Warn("go mod init failed", err)
		return err
	}
	if err := repo.StrictRun([]string{"go", "mod", "tidy", "-go=1.21"}); err != nil {
		log.Warn("go mod tidy failed", err)
		return err
	}

	// most things should build with golang after 1.21 // todo: allow this to be set somewhere
	if err := setGoVersion(repo, "1.21"); err != nil {
		log.Warn(repo.GoPath, "go mod edit failed", err)
		return err
	}

	repo.GoDeps = nil
	repo.GoPrimitive = false

	// if there is not a go.sum file, it better be a primitive golang project
	if !repo.Exists("go.sum") {
		// todo. fix this logic
		ok, err := repo.IsPrimitive()
		if err != nil {
			// this means this repo does not depend on any other package
			log.Info("PRIMATIVE repo error:", repo.GoPath, "err =", err)
			return err
		}

		if ok {
			// this means the repo is primitive so there is no go.sum
			repo.GoPrimitive = true
			repo.GoDeps = new(gitpb.GoDeps)
			return nil
		}
	}

	if !repo.Exists("go.sum") {
		// this should never happen
		data, _ := repo.ReadFile("go.mod")
		log.Info(string(data))
		return errors.New("missing go.sum file on non-primitive go.mod")
	}

	repo.GoDeps = new(gitpb.GoDeps)
	// return the attempt to parse go.sum
	_, err := repo.ParseGoSum()
	return err
}