PKGBUILD/cli/root.go

130 lines
3.2 KiB
Go

package cli
import (
"fmt"
"math"
"os"
"os/user"
"path/filepath"
"time"
"git.cryptic.systems/volker.raschek/flucky/cli/completion"
"git.cryptic.systems/volker.raschek/flucky/cli/daemon"
imp "git.cryptic.systems/volker.raschek/flucky/cli/imp"
"git.cryptic.systems/volker.raschek/flucky/cli/sensor"
"git.cryptic.systems/volker.raschek/flucky/cli/temperature"
"git.cryptic.systems/volker.raschek/flucky/pkg/config"
uuid "github.com/satori/go.uuid"
"github.com/spf13/cobra"
)
// Execute a
func Execute(version string) error {
rootCmd := &cobra.Command{
Use: "flucky",
PersistentPreRunE: preRunError,
Version: version,
}
defaultConfigFile, err := getDefaultConfigFile()
if err != nil {
return err
}
rootCmd.PersistentFlags().String("config", defaultConfigFile, "Config file")
rootCmd.PersistentFlags().String("loglevel", "info", "Set the Loglevel. Possible values: debug, info, warn, error, fatal")
subCommands := []func(cmd *cobra.Command) error{
completion.InitCmd,
daemon.InitCmd,
imp.InitCmd,
sensor.InitCmd,
temperature.InitCmd,
}
for _, subCommand := range subCommands {
if err := subCommand(rootCmd); err != nil {
return err
}
}
err = rootCmd.Execute()
if err != nil {
return err
}
return nil
}
func preRunError(cmd *cobra.Command, args []string) error {
configFile := cmd.Flag("config").Value.String()
// check if config file exists
if _, err := os.Stat(configFile); os.IsNotExist(err) {
// Time must be truncted for postgres. Postgres currently does not support
// nanoseconds which is automatically include into the go time object
postgresTimeStamp := time.Now()
location, err := time.LoadLocation("Europe/Berlin")
if err != nil {
return err
}
postgresTimeStamp = time.Date(postgresTimeStamp.Year(), postgresTimeStamp.Month(), postgresTimeStamp.Day(), postgresTimeStamp.Hour(), postgresTimeStamp.Minute(), postgresTimeStamp.Second(), int(math.Round(float64(postgresTimeStamp.Nanosecond())/1000000)*1000000), location)
// default cache directory
defaultCacheDir, err := getDefaultCacheDir()
if err != nil {
return err
}
// Default configuration
dsn := fmt.Sprintf("sqlite3://%v/sqlite.db?cache=shared&mode=memory&foreign_keys=on", defaultCacheDir)
cnf := config.Config{
DeviceID: uuid.NewV4().String(),
DSN: dsn,
}
err = config.Write(&cnf, configFile)
if err != nil {
return err
}
}
return nil
}
// getDefaultConfigFile returns the default path to the configuration file of
// flucky
func getDefaultConfigFile() (string, error) {
u, err := user.Current()
if err != nil {
return "", fmt.Errorf("Can not read current user: %v", err)
}
switch u.Uid {
case "0":
return "/etc/flucky/config.json", nil
default:
return filepath.Join(u.HomeDir, ".config/flucky/config.json"), nil
}
}
// getDefaultCacheDir returns the default path to the cache directory where
// flucky stores his measured values.
func getDefaultCacheDir() (string, error) {
u, err := user.Current()
if err != nil {
return "", fmt.Errorf("Can not read current user: %v", err)
}
switch u.Uid {
case "0":
return "/var/cache/flucky", nil
default:
return filepath.Join(u.HomeDir, ".cache/flucky"), nil
}
}