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path: root/redoGoMod.go
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package main

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

import (
	"fmt"
	"os"
	"strings"

	"github.com/go-cmd/cmd"
	"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.GetGoPath(), "rm go.mod go.sum failed", err)
	}
}

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

func goTidy(fullpath string) (cmd.Status, error) {
	if result, err := runVerbose(fullpath, []string{"go", "mod", "tidy", "-go=" + golangVersion}); err == nil {
		return result, nil
	} else {
		return result, err
	}
}

// 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.GetGoPath()}); err != nil {
		log.Warn("go mod init failed", err)
		return err
	}

	// check to see if this is primitive
	repo.ParseGoSum()
	if repo.GetGoPrimitive() {
		return nil
	}

	if result, err := goTidy(repo.FullPath); err != nil {
		if tinyFixer(result) {
			if _, err := goTidy(repo.FullPath); err != nil {
				return err
			}
		}
	}

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

	// parse the go.mod and go.sum files
	if repo.ParseGoSum() {
		// this is primitive
		return nil
	}

	return fmt.Errorf("check.ParseGoSum() failed")
}

func tinyFixer(result cmd.Status) bool {
	for _, line := range result.Stdout {
		if strings.Contains(line, "requires go@") {
			log.Info("tinyFixer:", line)
			parts := strings.Split(line, "requires go@")
			if len(parts) == 2 {
				parts = strings.Split(parts[1], ",")
				golangVersion = parts[0]
				return true
			}
			log.Info("tinyFixer:", line, "golangVersion", golangVersion)
		}
	}
	return false
}