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package main
import (
"flag"
"fmt"
"log"
"os"
"os/exec"
"sort"
"strings"
"time"
)
const stampFormat = "20060102150405"
func runCmd(name string, args ...string) string {
cmd := exec.Command(name, args...)
cmd.Stderr = os.Stderr
fmt.Println("+ ", name, strings.Join(args, " "))
data, err := cmd.Output()
if err != nil {
log.Fatal(err)
}
return strings.TrimSpace(string(data))
}
func setTime(s string, t time.Time) string {
return s[:19] + t.Format(stampFormat) + s[33:]
}
func main() {
check := flag.Bool("check", false, "Exit with error status on wrong order, but don't actually rename anything.")
flag.Parse()
runCmd("git", "fetch", "--no-tags", "origin", "+refs/heads/master:")
masterMigrations := strings.Split(runCmd("git", "ls-tree", "-r", "--name-only", "origin/master", "--", "migrate/migrations"), "\n")
newMigrations := strings.Split(runCmd("git", "diff", "--name-only", "origin/master", "--", "migrate/migrations"), "\n")
sort.Strings(masterMigrations)
sort.Strings(newMigrations)
if len(newMigrations) == 0 || len(newMigrations) == 1 && newMigrations[0] == "" {
return
}
if newMigrations[0] > masterMigrations[len(masterMigrations)-1] {
// already in order
return
}
if *check {
log.Println(newMigrations[0], "<=", masterMigrations[len(masterMigrations)-1])
log.Fatal("found new migrations before those in master")
}
t := time.Now().Add(time.Minute)
for _, m := range newMigrations {
runCmd("git", "mv", m, setTime(m, t))
t = t.Add(time.Minute)
}
}
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