138 lines
3.6 KiB
Go
138 lines
3.6 KiB
Go
package backend
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import (
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"encoding/json"
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"errors"
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"fmt"
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"os"
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"os/exec"
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"path/filepath"
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"time"
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"git.noctra.dev/noctra/servtex/globals"
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)
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// Returns the current time in the timezone specified in the config file
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func GetLocalTime() time.Time {
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timezone, _ := time.LoadLocation(globals.AppConfig.Timezone)
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return time.Now().In(timezone)
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}
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// Returns the current localtime in the RFC3339 format
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func GetLocalTimeRFC() string {
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return GetLocalTime().Format(time.RFC3339)
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}
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func GetLocalTimeLog() string {
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return GetLocalTime().Format("2006/01/02 15:04:05")
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}
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// Returns the current localtime in custom pretty print format
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func GetLocalTimePretty() string {
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return GetLocalTime().Format("02.01.2006 15:04")
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}
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// Writes to log and prints to screen
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func LogLine(message string) {
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logline := GetLocalTimeLog() + " ServTeX: " + message + "\n"
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fmt.Print(logline)
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globals.LogFile.WriteString(logline)
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}
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// Helper for configReader() that does the actual reading
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//
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// Also validates the populated fields
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func configReaderParse(filePath string, configOptionStorage *globals.Config) error {
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jsonData, err := os.ReadFile(filePath)
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if err == nil {
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if err = json.Unmarshal(jsonData, &configOptionStorage); err != nil {
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return errors.New("Config file could not be read")
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}
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} else {
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return errors.New("Config file does not exist")
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}
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return configValidator(*configOptionStorage)
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}
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func configValidator(config globals.Config) error {
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return nil
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}
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// Reads config file and stores the options in configOptionStorage
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//
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// Tries the following paths
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// executable/path/configFileName
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// %LOCALAPPDATA%\servtex\configFileName
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// ~/.config/servtex/configFileName
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func ConfigReader(configFileName string, configOptionStorage *globals.Config) error {
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exePath, err := os.Executable()
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if err == nil {
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path := filepath.Join(filepath.Dir(exePath), configFileName)
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err = configReaderParse(path, configOptionStorage)
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if err == nil { return nil }
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}
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localappdata := os.Getenv("LOCALAPPDATA")
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if localappdata != "" {
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path := filepath.Join(localappdata, "servtex", configFileName)
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err = configReaderParse(path, configOptionStorage)
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if err == nil { return nil }
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}
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path := filepath.Join("~", ".config", "servtex", configFileName)
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err = configReaderParse(path, configOptionStorage)
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if err == nil { return nil }
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return err
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}
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// Watches a specified directory and calls a function on change
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//
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// Optionally, a minimum time to wait for consecutive changes can be specified
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func ChangeWatch(path string, callOnChange func()) {
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LogLine("File change noticed")
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}
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// Intended to be run as goroutine
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func LatexCompile(config globals.Config, execution *globals.LatexExecution) error {
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if execution.ExecutionLock.TryLock() {
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defer execution.ExecutionLock.Unlock()
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} else {
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LogLine("LaTeX execution already underway")
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return errors.New("Execution already in progress")
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}
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LogLine("LaTeX execution started")
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execution.ExecutionState = "Started"
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var latexCommand *exec.Cmd
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switch config.LatexEngine {
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case "lualatex":
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latexCommand = exec.Command(
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"lualatex",
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"-output-directory=" + config.LatexOutputPath,
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"-jobname=servtex",
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config.LatexSourceFilePath,
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)
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default:
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execution.ExecutionState = "Unknown Latex Engine"
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execution.Output = []byte{}
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execution.Timestamp = GetLocalTimePretty()
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return errors.New("Unknown Latex Engine")
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}
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execution.ExecutionState = "Running"
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stdout, err := latexCommand.Output()
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if err != nil {
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execution.ExecutionState = "Failed"
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return err
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}
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execution.Output = stdout
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execution.Timestamp = GetLocalTimePretty()
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execution.ExecutionState = "Done"
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return nil
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}
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