151 lines
3.2 KiB
Go
151 lines
3.2 KiB
Go
package main
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import (
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"bufio"
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"bytes"
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"fmt"
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"io/ioutil"
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"os"
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"strconv"
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"strings"
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"github.com/BurntSushi/toml"
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)
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type AppConfig struct {
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StorageDir string `toml:"storage_dir"`
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ApiToken string `toml:"api_token"`
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ApiSecret string `toml:"api_secret"`
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AppToken string `toml:"app_token"`
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AppSecret string `toml:"app_secret"`
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PullCount int `toml:"-"`
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ForceDownload bool `toml:"-"`
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Verbose bool `toml:"-"`
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}
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func NewAppConfig(args []string) (*AppConfig, error) {
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fmt.Println("Initializing App...")
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c := &AppConfig{}
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if err := c.ProcessArgs(args); err != nil {
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return nil, err
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}
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if err := c.Load(); err != nil {
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return nil, err
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}
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return c, c.VerifyConfig()
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}
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func (c *AppConfig) ProcessArgs(args []string) error {
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var err error
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for _, arg := range args {
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var k, v string
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if strings.ContainsRune(arg, '=') {
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k = arg[:strings.Index(arg, "=")]
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v = arg[strings.Index(arg, "=")+1:]
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} else {
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k = arg
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}
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switch k {
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case "-count", "-c":
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c.PullCount, err = strconv.Atoi(v)
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if err != nil {
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return fmt.Errorf("Invalid Count (%s): %w", v, err)
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}
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fmt.Printf("Pulling %d tweets", c.PullCount)
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case "-force", "-f":
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c.ForceDownload = true
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fmt.Println("Forcing Downloads")
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case "-help", "-h":
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PrintUsageAndExit()
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case "-verbose", "-v":
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c.Verbose = true
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}
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}
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return nil
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}
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func (c *AppConfig) Load() error {
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cfgPath := AppName + ".conf"
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tomlData, err := ioutil.ReadFile(cfgPath)
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if err != nil {
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if err = c.Save(); err != nil {
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return err
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}
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}
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if _, err := toml.Decode(string(tomlData), &c); err != nil {
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return err
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}
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return nil
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}
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func (c *AppConfig) Save() error {
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buf := new(bytes.Buffer)
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cfgPath := AppName + ".conf"
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if err := toml.NewEncoder(buf).Encode(c); err != nil {
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return err
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}
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return ioutil.WriteFile(cfgPath, buf.Bytes(), 0644)
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}
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func (c *AppConfig) VerifyConfig() error {
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configChanged := false
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if c.ApiToken == "" {
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c.ApiToken = GetDataFromUser("API Token")
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configChanged = true
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}
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if c.ApiSecret == "" {
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c.ApiSecret = GetDataFromUser("API Secret")
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configChanged = true
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}
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if c.AppToken == "" {
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c.AppToken = GetDataFromUser("App Token")
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configChanged = true
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}
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if c.AppSecret == "" {
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c.AppSecret = GetDataFromUser("App Secret")
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configChanged = true
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}
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exist, err := FileExists(c.StorageDir)
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for c.StorageDir == "" || err != nil || !exist {
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// Check if the storage directory exists
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c.StorageDir = GetDataFromUser("Image Download Directory")
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configChanged = true
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exist, err = FileExists(c.StorageDir)
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}
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if configChanged {
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return c.Save()
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}
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fmt.Println("Screenshot Directory:", c.StorageDir)
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return nil
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}
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func (c *AppConfig) GetFilePath(filename string) string {
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return c.StorageDir + string(os.PathSeparator) + filename
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}
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func GetDataFromUser(label string) string {
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reader := bufio.NewReader(os.Stdin)
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var res string
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for res == "" {
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fmt.Println(label + ": ")
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res, _ = reader.ReadString('\n')
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res = strings.TrimSpace(res)
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if res == "" {
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fmt.Println("Non-empty response is required")
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}
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}
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return res
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}
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func FileExists(path string) (bool, error) {
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_, err := os.Stat(path)
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if err == nil {
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return true, nil
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}
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if os.IsNotExist(err) {
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return false, nil
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}
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return true, err
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}
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