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facade.go
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facade.go
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package facade
import (
"context"
"fmt"
"os"
"os/signal"
"runtime"
"github.com/goark/errs"
"github.com/goark/apod/ecode"
"github.com/goark/apod/nasaapi"
"github.com/goark/apod/nasaapi/apod"
"github.com/goark/gocli/config"
"github.com/goark/gocli/exitcode"
"github.com/goark/gocli/rwi"
"github.com/spf13/cobra"
"github.com/spf13/viper"
)
var (
//Name is applicatin name
Name = "apod"
//Version is version for applicatin
Version = "dev-version"
)
var (
debugFlag bool //debug flag
cfgFile string //config file
configFile = "config"
defaultConfigPath = config.Path(Name, configFile+".yaml")
)
// newRootCmd returns cobra.Command instance for root command
func newRootCmd(ui *rwi.RWI, args []string) *cobra.Command {
rootCmd := &cobra.Command{
Use: Name,
Short: "CLI Tool for Astronomy Picture of the Day with NASA API",
Long: "CLI Tool for Astronomy Picture of the Day with NASA API.",
RunE: func(cmd *cobra.Command, args []string) error {
return debugPrint(ui, errs.Wrap(ecode.ErrNoCommand))
},
}
// global options (binding)
rootCmd.PersistentFlags().StringP("api-key", "", "", "NASA API key")
rootCmd.PersistentFlags().StringP("date", "", "", "date of the APOD image to retrieve (YYYY-MM-DD)")
rootCmd.PersistentFlags().StringP("start-date", "", "", "start of a date range (YYYY-MM-DD)")
rootCmd.PersistentFlags().StringP("end-date", "", "", "end of a date range (YYYY-MM-DD)")
rootCmd.PersistentFlags().IntP("count", "", 0, "count randomly chosen images")
rootCmd.PersistentFlags().BoolP("thumbs", "", false, "return the URL of video thumbnail")
//Bind config file
_ = viper.BindPFlag("api-key", rootCmd.PersistentFlags().Lookup("api-key"))
_ = viper.BindPFlag("date", rootCmd.PersistentFlags().Lookup("date"))
_ = viper.BindPFlag("start-date", rootCmd.PersistentFlags().Lookup("start-date"))
_ = viper.BindPFlag("end-date", rootCmd.PersistentFlags().Lookup("end-date"))
_ = viper.BindPFlag("count", rootCmd.PersistentFlags().Lookup("count"))
_ = viper.BindPFlag("thumbs", rootCmd.PersistentFlags().Lookup("thumbs"))
cobra.OnInitialize(initConfig)
// global options (other)
rootCmd.PersistentFlags().BoolVarP(&debugFlag, "debug", "", false, "for debug")
rootCmd.PersistentFlags().StringVar(&cfgFile, "config", "", fmt.Sprintf("Config file (default %v)", defaultConfigPath))
rootCmd.SilenceUsage = true
rootCmd.CompletionOptions.DisableDefaultCmd = true
rootCmd.SetArgs(args)
rootCmd.SetIn(ui.Reader()) //Stdin
rootCmd.SetOut(ui.ErrorWriter()) //Stdout -> Stderr
rootCmd.SetErr(ui.ErrorWriter()) //Stderr
rootCmd.AddCommand(
newVersionCmd(ui),
newLookup(ui),
newDownload(ui),
)
return rootCmd
}
func makeAPODConfig() (*apod.Request, error) {
date, err := nasaapi.DateFrom(viper.GetString("date"))
if err != nil {
return nil, errs.Wrap(err)
}
startDate, err := nasaapi.DateFrom(viper.GetString("start-date"))
if err != nil {
return nil, errs.Wrap(err)
}
endDate, err := nasaapi.DateFrom(viper.GetString("end-date"))
if err != nil {
return nil, errs.Wrap(err)
}
return apod.New(
apod.WithDate(date),
apod.WithStartDate(startDate),
apod.WithEndDate(endDate),
apod.WithCount(viper.GetInt("count")),
apod.WithThumbs(viper.GetBool("thumbs")),
apod.WithAPIKey(viper.GetString("api-key")),
), nil
}
// initConfig reads in config file and ENV variables if set.
func initConfig() {
if cfgFile != "" {
// Use config file from the flag.
viper.SetConfigFile(cfgFile)
} else {
// Find config directory.
confDir := config.Dir(Name)
if len(confDir) == 0 {
confDir = "." //current directory
}
// Search config in home directory with name ".books-data.yaml" (without extension).
viper.AddConfigPath(confDir)
viper.SetConfigName(configFile)
}
viper.AutomaticEnv() // read in environment variables that match
_ = viper.ReadInConfig() // If a config file is found, read it in.
}
// Execute is called from main function
func Execute(ui *rwi.RWI, args []string) (exit exitcode.ExitCode) {
defer func() {
//panic hundling
if r := recover(); r != nil {
_ = ui.OutputErrln("Panic:", r)
for depth := 0; ; depth++ {
pc, src, line, ok := runtime.Caller(depth)
if !ok {
break
}
_ = ui.OutputErrln(" ->", depth, ":", runtime.FuncForPC(pc).Name(), ":", src, ":", line)
}
exit = exitcode.Abnormal
}
}()
//execution
exit = exitcode.Normal
ctx, cancel := signal.NotifyContext(context.Background(), os.Interrupt)
defer cancel()
if err := newRootCmd(ui, args).ExecuteContext(ctx); err != nil {
exit = exitcode.Abnormal
}
return
}
/* MIT License
*
* Copyright 2023 Spiegel
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/