/
root.go
144 lines (123 loc) · 4.01 KB
/
root.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
// Copyright © 2018 Kristof Vannotten <kristof@vannotten.be>
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package cmd
import (
"fmt"
"log"
"os"
"path/filepath"
"strconv"
"strings"
"github.com/kvannotten/pcd"
"github.com/mitchellh/go-homedir"
"github.com/spf13/cobra"
"github.com/spf13/viper"
)
var cfgFile string
// rootCmd represents the base command when called without any subcommands
var rootCmd = &cobra.Command{
Use: "pcd",
Short: "CLI podcatcher (podcast client)",
Long: `pcd is a CLI application that allows you to track and download your podcasts.
Just add the necessary configuration under ~/.config/pcd.yml and you can get started.
Run pcd -h to get full help.`,
}
// Execute adds all child commands to the root command and sets flags appropriately.
// This is called by main.main(). It only needs to happen once to the rootCmd.
func Execute() {
if err := rootCmd.Execute(); err != nil {
fmt.Println(err)
os.Exit(1)
}
}
func init() {
cobra.OnInitialize(initConfig)
// Here you will define your flags and configuration settings.
// Cobra supports persistent flags, which, if defined here,
// will be global for your application.
rootCmd.PersistentFlags().StringVar(&cfgFile, "config", "", "config file (default is $HOME/.config/pcd.yml)")
}
// 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 home directory.
home, err := homedir.Dir()
if err != nil {
fmt.Println(err)
os.Exit(1)
}
// Search config in home directory with name ".pcd" (without extension).
viper.AddConfigPath(filepath.Join(home, ".config"))
viper.SetConfigName("pcd")
}
viper.AutomaticEnv() // read in environment variables that match
// If a config file is found, read it in.
if err := viper.ReadInConfig(); err == nil {
fmt.Println("Using config file:", viper.ConfigFileUsed())
} else {
fmt.Println("No configuration found. Please create one first. Have a look at https://github.com/kvannotten/pcd#usage to see how.")
os.Exit(1)
}
}
func findPodcast(idOrName string) (*pcd.Podcast, error) {
id, err := strconv.Atoi(idOrName)
if err != nil {
switch err.(type) {
case *strconv.NumError: // try as a name instead
return findByNameFragment(idOrName), nil
default:
log.Print("Could not parse podcast search argument, please use the ID or the name")
return nil, err
}
}
return findByID(id), nil
}
func findAll() []pcd.Podcast {
var podcasts []pcd.Podcast
if err := viper.UnmarshalKey("podcasts", &podcasts); err != nil {
log.Fatalf("Could not parse 'podcasts' entry in config: %v", err)
}
return podcasts
}
func findByNameFragment(name string) *pcd.Podcast {
return findByFunc(func(podcast *pcd.Podcast) bool {
return strings.Contains(
strings.ToLower(podcast.Name), strings.ToLower(name))
})
}
func findByID(id int) *pcd.Podcast {
return findByFunc(func(podcast *pcd.Podcast) bool {
return podcast.ID == id
})
}
func findByFunc(fn func(podcast *pcd.Podcast) bool) *pcd.Podcast {
podcasts := findAll()
var matchedPodcasts = make([]*pcd.Podcast, 0)
for _, podcast := range podcasts {
if fn(&podcast) {
matchedPodcast := podcast
matchedPodcasts = append(matchedPodcasts, &matchedPodcast)
}
}
if len(matchedPodcasts) == 1 {
return matchedPodcasts[0]
} else {
log.Fatalf("Provided search term matched too many podcasts: %v", matchedPodcasts)
}
return nil
}