upm.go

package main

import (
    "bufio"
    "fmt"
    "io"
    "net/http"
    "os"
    "os/exec"
    "runtime"
    "time"
)

var version string = "1.1.0"
var traditional, flatpak, snapd, hold string

//

var db []string = []string{"--copyright", "-c", "--help", "-h", "--reset", "-r", "--version", "-v", "--traditional", "-t", "--flatpak", "-f", "--snapd", "-s", "autoremove", "info", "install", "in", "remove", "rm", "search", "se", "update", "up"}

func checks() bool {
    for i := 0; i < len(os.Args); i++ {
        if os.Args[i][0] == '-' && contains(db, os.Args[i]) == -1 {
            return false
        }
    }
    return true
}

func contains(x []string, y string) int {
    for i := 0; i < len(x); i++ {
        if x[i] == y {
            return i
        }
    }
    return -1
}

func counts(x []string) int {
    count := 0
    for i := 0; i < len(os.Args); i++ {
        if contains(x, os.Args[i]) != -1 {
            count++
        }
    }
    return count
}

func gets(x []string, y []string) []string {
    index := -1
    for i := 0; i < len(x); i++ {
        tmp := contains(removes(os.Args), x[i])
        if tmp != -1 && (index == -1 || tmp < index) {
            index = tmp
        }
    }
    output := make([]string, len(removes(os.Args)) + len(y) - index - 1)
    for i := 0; i < len(y); i++ {
        output[i] = y[i]
    }
    for i := len(y); i < len(output); i++ {
        output[i] = removes(os.Args)[index + i - len(y) + 1]
    }
    if len(output) == len(y) {
        return []string{}
    } else {
        return output
    }
}

func holds(x string) int {
    output := 0
    if hold == "true" {
        for {
            fmt.Print("Do you want to skip the \"" + x + "\" module? (y/N): ")
            input := ""
            fmt.Scanln(&input)
            if input == "N" || input == "n" || input == "" {
                break
            } else if input == "Y" || input == "y" {
                output = 1
                break
            }
        }
    }
    return output
}

func removes(x []string) []string {
    count := 0
    for i := 0; i < len(x); i++ {
        if contains(db[8:14], x[i]) != -1 {
            count++
        }
    }
    output := make([]string, len(x) - count)
    i := 0
    for j := 0; j < len(x); j++ {
        if contains(db[8:14], x[j]) == -1 {
            output[i] = x[j]
            i++
        }
    }
    return output
}

func runs(x []string) {
    command := exec.Command("sudo", x...)
    command.Stdin = os.Stdin
    command.Stdout = os.Stdout
    command.Stderr = os.Stderr
    command.Run()
}

//

func read() {
    home, _:= os.UserHomeDir()
    file, e := os.Open(home + "/.config/upm.xml")
    if e != nil {
        write()
    } else {
        defer file.Close()
        scanner := bufio.NewScanner(file)
        lines := 0
        for scanner.Scan() {
            lines++
        }
        if lines == 8 {
            file, _ := os.Open(home + "/.config/upm.xml")
            defer file.Close()
            scanner := bufio.NewScanner(file)
            scanner.Scan()
            if scanner.Text() == "<?xml version=\"1.0\" encoding=\"UTF-8\"?>" {
                scanner.Scan()
                if scanner.Text() == "<upm>" {
                    scanner.Scan()
                    if scanner.Text() == "\t<version>" + version + "</version>" {
                        scanner.Scan()
                        if scanner.Text() == "\t<traditional>true</traditional>" {
                            traditional = "true"
                        } else if scanner.Text() == "\t<traditional>false</traditional>" {
                            traditional = "false"
                        } else {
                            write()
                        }
                        if traditional == "true" || traditional == "false" {
                            scanner.Scan()
                            if scanner.Text() == "\t<flatpak>true</flatpak>" {
                                flatpak = "true"
                            } else if scanner.Text() == "\t<flatpak>false</flatpak>" {
                                flatpak = "false"
                            } else {
                                write()
                            }
                            if flatpak == "true" || flatpak == "false" {
                                scanner.Scan()
                                if scanner.Text() == "\t<snapd>true</snapd>" {
                                    snapd = "true"
                                } else if scanner.Text() == "\t<snapd>false</snapd>" {
                                    snapd = "false"
                                } else {
                                    write()
                                }
                                if snapd == "true" || snapd == "false" {
                                    scanner.Scan()
                                    if scanner.Text() == "\t<hold>true</hold>" {
                                        hold = "true"
                                    } else if scanner.Text() == "\t<hold>false</hold>" {
                                        hold = "false"
                                    } else {
                                        write()
                                    }
                                    if hold == "true" || hold == "false" {
                                        scanner.Scan()
                                        if scanner.Text() != "</upm>" {
                                            write()
                                        }
                                    } else {
                                        write()
                                    }
                                } else {
                                    write()
                                }
                            } else {
                                write()
                            }
                        } else {
                            write()
                        }
                    } else {
                        write()
                    }
                } else {
                    write()
                }
            } else {
                write()
            }
        } else {
            write()
        }
    }
}

func write() {
    home, _:= os.UserHomeDir()
    file, _ := os.Create(home + "/.config/upm.xml")
    defer file.Close()
    writer := bufio.NewWriter(file)
    writer.WriteString("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n")
    writer.WriteString("<upm>\n")
    writer.WriteString("\t<version>" + version + "</version>\n")
    for {
        fmt.Print("Do you want to activate the \"traditional\" module? (true/false): ")
        fmt.Scanln(&traditional)
        if traditional == "true" || traditional == "false" {
            break
        }
    }
    writer.WriteString("\t<traditional>" + traditional + "</traditional>\n")
    for {
        fmt.Print("Do you want to activate the \"flatpak\" module? (true/false): ")
        fmt.Scanln(&flatpak)
        if flatpak == "true" || flatpak == "false" {
            break
        }
    }
    writer.WriteString("\t<flatpak>" + flatpak + "</flatpak>\n")
    for {
        fmt.Print("Do you want to activate the \"snapd\" module? (true/false): ")
        fmt.Scanln(&snapd)
        if snapd == "true" || snapd == "false" {
            break
        }
    }
    writer.WriteString("\t<snapd>" + snapd + "</snapd>\n")
    for {
        fmt.Print("Do you want to activate the \"hold\" module? (true/false): ")
        fmt.Scanln(&hold)
        if hold == "true" || hold == "false" {
            break
        }
    }
    writer.WriteString("\t<hold>" + hold + "</hold>\n")
    writer.WriteString("</upm>\n")
    writer.Flush()
}

//

func copyright() {
    fmt.Println("MIT License")
    fmt.Println()
    fmt.Println("Copyright (c)", time.Now().Year(), "Robert Kagan")
    fmt.Println()
    fmt.Println("Permission is hereby granted, free of charge, to any person obtaining a copy")
    fmt.Println("of this software and associated documentation files (the \"Software\"), to deal")
    fmt.Println("in the Software without restriction, including without limitation the rights")
    fmt.Println("to use, copy, modify, merge, publish, distribute, sublicense, and/or sell")
    fmt.Println("copies of the Software, and to permit persons to whom the Software is")
    fmt.Println("furnished to do so, subject to the following conditions:")
    fmt.Println()
    fmt.Println("The above copyright notice and this permission notice shall be included in all")
    fmt.Println("copies or substantial portions of the Software.")
    fmt.Println()
    fmt.Println("THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR")
    fmt.Println("IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,")
    fmt.Println("FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE")
    fmt.Println("AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER")
    fmt.Println("LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,")
    fmt.Println("OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE")
    fmt.Println("SOFTWARE.")
}

func help() {
    fmt.Println("--copyright\t-c")
    fmt.Println("--help\t\t-h")
    fmt.Println("--reset\t\t-r")
    fmt.Println("--version\t-v")
    fmt.Println()
    fmt.Println("--traditional\t-t")
    fmt.Println("--flatpak\t-f")
    fmt.Println("--snapd\t\t-s")
    fmt.Println()
    fmt.Println("autoremove")
    fmt.Println("info\t\t\tpackage(s)")
    fmt.Println("install\t\tin\tpackage(s)")
    fmt.Println("remove\t\trm\tpackage(s)")
    fmt.Println("search\t\tse\tpackage(s)")
    fmt.Println("update\t\tup")
}

//

func autoremove() {
    if len(gets([]string{"autoremove"}, []string{})) == 0 {
        if traditional == "true" {
            if holds("traditional") == 0 {
                if exec.Command("pacman").Run() == nil {
                    runs([]string{"pacman", "-Rscn", "$(pacman -Qdtq)"})
                    runs([]string{"pacman", "-Scc"})
                } else if exec.Command("apt").Run() == nil {
                    runs([]string{"apt", "autoremove", "--purge"})
                    runs([]string{"apt", "clean"})
                } else if exec.Command("dnf").Run() == nil {
                    runs([]string{"dnf", "autoremove"})
                    runs([]string{"dnf", "clean", "all"})
                } else if exec.Command("zypper").Run() == nil {
                    file, _ := os.Create("/tmp/upm.sh")
                    defer file.Close()
                    writer := bufio.NewWriter(file)
                    writer.WriteString("zypper packages --unneeded | awk -F'|' 'NR==0 || NR==1 || NR==2 || NR==3 || NR==4 {next} {print $3}' > /tmp/zyp\n")
                    writer.WriteString("while read p; do zypper remove --clean-deps \"$p\"; done < /tmp/zyp\n")
                    writer.WriteString("rm -rf /tmp/zyp\n")
                    writer.WriteString("rm -rf /tmp/upm.sh\n")
                    writer.Flush()
                    runs([]string{"bash", "/tmp/upm.sh"})
                    runs([]string{"zypper", "clean"})
                }
            }
        }
        if flatpak == "true" {
            if holds("flatpak") == 0 {
                runs([]string{"flatpak", "remove", "--delete-data", "--unused"})
            }
        }
        if snapd == "true" {
            if holds("snapd") == 0 {
                file, _ := os.Create("/tmp/upm.sh")
                defer file.Close()
                writer := bufio.NewWriter(file)
                writer.WriteString("snap list --all | awk '/disabled/{print $1, $3}' |\n")
                writer.WriteString("\twhile read snapname revision; do\n")
                writer.WriteString("\t\tsnap remove --purge \"$snapname\" --revision=\"$revision\"\n")
                writer.WriteString("\tdone\n")
                writer.WriteString("rm -rf /tmp/upm.sh\n")
                writer.Flush()
                runs([]string{"bash", "/tmp/upm.sh"})
            }
        }
    } else {
        help()
    }
}

func info() {
    if len(gets([]string{"info"}, []string{})) != 0 {
        if traditional == "true" {
            if holds("traditional") == 0 {
                if exec.Command("pacman").Run() == nil {
                    runs(gets([]string{"info"}, []string{"pacman", "-Si"}))
                } else if exec.Command("apt").Run() == nil {
                    runs(gets([]string{"info"}, []string{"apt", "info"}))
                } else if exec.Command("dnf").Run() == nil {
                    runs(gets([]string{"info"}, []string{"dnf", "info"}))
                } else if exec.Command("zypper").Run() == nil {
                    runs(gets([]string{"info"}, []string{"zypper", "info"}))
                }
            }
        }
        if flatpak == "true" {
            if holds("flatpak") == 0 {
                runs(gets([]string{"info"}, []string{"flatpak", "info"}))
            }
        }
        if snapd == "true" {
            if holds("snapd") == 0 {
                runs(gets([]string{"info"}, []string{"snap", "info"}))
            }
        }
    } else {
        help()
    }
}

func install() {
    if len(gets([]string{"install", "in"}, []string{})) != 0 {
        if traditional == "true" {
            if holds("traditional") == 0 {
                if exec.Command("pacman").Run() == nil {
                    runs(gets([]string{"install", "in"}, []string{"pacman", "-S"}))
                } else if exec.Command("apt").Run() == nil {
                    runs(gets([]string{"install", "in"}, []string{"apt", "install"}))
                } else if exec.Command("dnf").Run() == nil {
                    runs(gets([]string{"install", "in"}, []string{"dnf", "install"}))
                } else if exec.Command("zypper").Run() == nil {
                    runs(gets([]string{"install", "in"}, []string{"zypper", "install"}))
                }
            }
        }
        if flatpak == "true" {
            if holds("flatpak") == 0 {
                runs(gets([]string{"install", "in"}, []string{"flatpak", "install"}))
            }
        }
        if snapd == "true" {
            if holds("snapd") == 0 {
                runs(gets([]string{"install", "in"}, []string{"snap", "install"}))
            }
        }
    } else {
        help()
    }
}

func remove() {
    if len(gets([]string{"remove", "rm"}, []string{})) != 0 {
        if traditional == "true" {
            if holds("traditional") == 0 {
                if exec.Command("pacman").Run() == nil {
                    runs(gets([]string{"remove", "rm"}, []string{"pacman", "-Rscn"}))
                } else if exec.Command("apt").Run() == nil {
                    runs(gets([]string{"remove", "rm"}, []string{"apt", "purge"}))
                } else if exec.Command("dnf").Run() == nil {
                    runs(gets([]string{"remove", "rm"}, []string{"dnf", "remove"}))
                } else if exec.Command("zypper").Run() == nil {
                    runs(gets([]string{"remove", "rm"}, []string{"zypper", "remove", "--clean-deps"}))
                }
            }
        }
        if flatpak == "true" {
            if holds("flatpak") == 0 {
                runs(gets([]string{"remove", "rm"}, []string{"flatpak", "remove"}))
                for i := 0; i < len(gets([]string{"remove", "rm"}, []string{})); i++ {
                    home, _:= os.UserHomeDir()
                    runs([]string{"rm", "-rf", home + "/.var/app/" + gets([]string{"remove", "rm"}, []string{})[i]})
                }
            }
        }
        if snapd == "true" {
            if holds("snapd") == 0 {
                runs(gets([]string{"remove", "rm"}, []string{"snap", "remove", "--purge"}))
                for i := 0; i < len(gets([]string{"remove", "rm"}, []string{})); i++ {
                    home, _:= os.UserHomeDir()
                    runs([]string{"rm", "-rf", home + "/snap/" + gets([]string{"remove", "rm"}, []string{})[i]})
                }
            }
        }
    } else {
        help()
    }
}

func search() {
    if len(gets([]string{"search", "se"}, []string{})) != 0 {
        if traditional == "true" {
            if holds("traditional") == 0 {
                if exec.Command("pacman").Run() == nil {
                    runs(gets([]string{"search", "se"}, []string{"pacman", "-Ss"}))
                } else if exec.Command("apt").Run() == nil {
                    runs(gets([]string{"search", "se"}, []string{"apt", "search"}))
                } else if exec.Command("dnf").Run() == nil {
                    runs(gets([]string{"search", "se"}, []string{"dnf", "search"}))
                } else if exec.Command("zypper").Run() == nil {
                    runs(gets([]string{"search", "se"}, []string{"zypper", "search"}))
                }
            }
        }
        if flatpak == "true" {
            if holds("flatpak") == 0 {
                runs(gets([]string{"search", "se"}, []string{"flatpak", "search"}))
            }
        }
        if snapd == "true" {
            if holds("snapd") == 0 {
                runs(gets([]string{"search", "se"}, []string{"snap", "search"}))
            }
        }
    } else {
        help()
    }
}

func update() {
    file, e := http.Get("https://raw.githubusercontent.com/libalis/upm/main/VERSION")
    if e == nil {
        reader, _ := io.ReadAll(file.Body)
        if version != string(reader)[0 : len(reader) - 1] {
            fmt.Println("\nA new update is available for upm (https://github.com/libalis/upm)\n")
            hold = "true"
        }
    }
    defer file.Body.Close()
    if len(gets([]string{"update", "up"}, []string{})) == 0 {
        if traditional == "true" {
            if holds("traditional") == 0 {
                if exec.Command("pacman").Run() == nil {
                    runs([]string{"pacman", "-Syyu"})
                } else if exec.Command("apt").Run() == nil {
                    runs([]string{"apt", "update"})
                    runs([]string{"apt", "full-upgrade"})
                } else if exec.Command("dnf").Run() == nil {
                    runs([]string{"dnf", "upgrade", "--refresh"})
                } else if exec.Command("zypper").Run() == nil {
                    runs([]string{"zypper", "refresh", "--force"})
                    runs([]string{"zypper", "dist-upgrade"})
                }
            }
        }
        if flatpak == "true" {
            if holds("flatpak") == 0 {
                runs([]string{"flatpak", "update"})
            }
        }
        if snapd == "true" {
            if holds("snapd") == 0 {
                runs([]string{"snap", "refresh"})
            }
        }
    } else {
        help()
    }
}

//

func main() {
    read()
    if !checks() || counts(db[8:10]) > 1 ||  counts(db[10:12]) > 1 ||  counts(db[12:14]) > 1 {
        help()
    } else {
        if counts(db[8:14]) >= 1 {
            traditional = "false"
            flatpak = "false"
            snapd = "false"
            hold = "false"
            if counts(db[8:10]) == 1 {
                traditional = "true"
            }
            if counts(db[10:12]) == 1 {
                flatpak = "true"
            }
            if counts(db[12:14]) == 1 {
                snapd = "true"
            }
        }
        if counts(db[0:2]) == 1 {
            copyright();
        } else if counts(db[2:4]) == 1 {
            help()
        } else if counts(db[4:6]) == 1 {
            write()
        } else if counts(db[6:8]) == 1 {
            fmt.Println("upm", version, "(" + runtime.GOARCH + ")")
        } else if contains(os.Args, db[14]) != -1 {
            autoremove()
        } else if contains(os.Args, db[15]) != -1 {
            info()
        } else if counts(db[16:18]) == 1 {
            install()
        } else if counts(db[18:20]) == 1 {
            remove()
        } else if counts(db[20:22]) == 1 {
            search()
        } else if counts(db[22:24]) == 1 {
            update()
        } else {
            help()
        }
    }
}