Refactor to use cobra cli

.gitignore

@@ -3,3 +3,4 @@ output
 *.zip
 *.txt
 *.xml
+/target

cmd/root.go

@@ -0,0 +1,67 @@
+package cmd
+
+import (
+	"fmt"
+	"os"
+	"runtime/debug"
+
+	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
+	"go.cpmachado.pt/gelo/internal/config"
+)
+
+var (
+	runVersionFlag bool
+	cfgFile        string = config.DefaultConfigFile
+)
+
+// rootCmd represents the base command when called without any subcommands
+var rootCmd = &cobra.Command{
+	Use:   "gelo",
+	Short: "A tool to keep up with ratings",
+	RunE: func(cmd *cobra.Command, args []string) error {
+		if !runVersionFlag {
+			return cmd.Help()
+		}
+		progBuildInfo, ok := debug.ReadBuildInfo()
+		if ok {
+			fmt.Printf("%s-%s", cmd.Use, progBuildInfo.Main.Version)
+		} else {
+			fmt.Printf("%s-unknown", cmd.Use)
+		}
+		return nil
+	},
+}
+
+func Execute() {
+	err := rootCmd.Execute()
+	if err != nil {
+		fmt.Fprint(os.Stderr, err.Error())
+		os.Exit(1)
+	}
+}
+
+func init() {
+	cobra.OnInitialize(initConfig)
+	rootCmd.Flags().BoolVarP(&runVersionFlag, "version", "v", false, "Display version")
+	rootCmd.PersistentFlags().StringVar(&cfgFile, "config", config.DefaultConfigFile, "config file")
+}
+
+func initConfig() {
+	if cfgFile != "" {
+		// Use config file from the flag.
+		viper.SetConfigFile(cfgFile)
+	} else {
+
+		// Search config in home directory with name ".cobra" (without extension).
+		viper.AddConfigPath(config.DefaultConfigHome)
+		viper.SetConfigType("json")
+		viper.SetConfigName("config")
+	}
+
+	viper.AutomaticEnv()
+
+	if err := viper.ReadInConfig(); err == nil {
+		fmt.Println("Using config file:", viper.ConfigFileUsed())
+	}
+}

doc/FPX.md

@@ -0,0 +1,39 @@
+# FPX (Federação Portuguesa de Xadrez)
+
+Website: <https://fpx.pt/site>
+
+Portuguese federation data:
+
+- blitz: <http://elo.fpx.pt/elo_csv.php?lista=b>
+- classic: <http://elo.fpx.pt/elo_csv.php>
+- rapid: <http://elo.fpx.pt/elo_csv.php?lista=r>
+
+It's a simple csv using ";" as separator and the fields.
+
+It has some issues with encoding and random Carriage return in some records.
+
+So far it appears, by order:
+- FPX id
+- Name
+- Federation
+- Sex
+- Club ID
+- Club Name
+- Date of Birth: only year in format (2006-_-_)
+- Number of games? (Still not sure)
+- FIDE ID
+- Rating
+- Title
+- Age Group
+  + U08
+  + U10
+  + U12
+  + U14
+  + U16
+  + U18
+  + U20
+  + Sen
+  + S50
+  + S65
+- Flags: Only inactive?
+- K factor? (appears so, but some are 0 and empty, are these unrated?)

go.mod

@@ -1,3 +1,25 @@
 module go.cpmachado.pt/gelo
 
 go 1.25.1
+
+require (
+	github.com/adrg/xdg v0.5.3
+	github.com/spf13/cobra v1.10.2
+	github.com/spf13/viper v1.21.0
+)
+
+require (
+	github.com/fsnotify/fsnotify v1.9.0 // indirect
+	github.com/go-viper/mapstructure/v2 v2.4.0 // indirect
+	github.com/inconshreveable/mousetrap v1.1.0 // indirect
+	github.com/pelletier/go-toml/v2 v2.2.4 // indirect
+	github.com/sagikazarmark/locafero v0.12.0 // indirect
+	github.com/spf13/afero v1.15.0 // indirect
+	github.com/spf13/cast v1.10.0 // indirect
+	github.com/spf13/pflag v1.0.10 // indirect
+	github.com/subosito/gotenv v1.6.0 // indirect
+	go.yaml.in/yaml/v3 v3.0.4 // indirect
+	golang.org/x/sys v0.39.0 // indirect
+	golang.org/x/text v0.32.0 // indirect
+	gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 // indirect
+)

go.sum

@@ -0,0 +1,60 @@
+github.com/adrg/xdg v0.5.3 h1:xRnxJXne7+oWDatRhR1JLnvuccuIeCoBu2rtuLqQB78=
+github.com/adrg/xdg v0.5.3/go.mod h1:nlTsY+NNiCBGCK2tpm09vRqfVzrc2fLmXGpBLF0zlTQ=
+github.com/cpuguy83/go-md2man/v2 v2.0.6/go.mod h1:oOW0eioCTA6cOiMLiUPZOpcVxMig6NIQQ7OS05n1F4g=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/frankban/quicktest v1.14.6 h1:7Xjx+VpznH+oBnejlPUj8oUpdxnVs4f8XU8WnHkI4W8=
+github.com/frankban/quicktest v1.14.6/go.mod h1:4ptaffx2x8+WTWXmUCuVU6aPUX1/Mz7zb5vbUoiM6w0=
+github.com/fsnotify/fsnotify v1.9.0 h1:2Ml+OJNzbYCTzsxtv8vKSFD9PbJjmhYF14k/jKC7S9k=
+github.com/fsnotify/fsnotify v1.9.0/go.mod h1:8jBTzvmWwFyi3Pb8djgCCO5IBqzKJ/Jwo8TRcHyHii0=
+github.com/go-viper/mapstructure/v2 v2.4.0 h1:EBsztssimR/CONLSZZ04E8qAkxNYq4Qp9LvH92wZUgs=
+github.com/go-viper/mapstructure/v2 v2.4.0/go.mod h1:oJDH3BJKyqBA2TXFhDsKDGDTlndYOZ6rGS0BRZIxGhM=
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+github.com/kr/pretty v0.3.1 h1:flRD4NNwYAUpkphVc1HcthR4KEIFJ65n8Mw5qdRn3LE=
+github.com/kr/pretty v0.3.1/go.mod h1:hoEshYVHaxMs3cyo3Yncou5ZscifuDolrwPKZanG3xk=
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internal/config/consts.go

@@ -0,0 +1,12 @@
+package config
+
+import (
+	"path"
+
+	"github.com/adrg/xdg"
+)
+
+var (
+	DefaultConfigHome string = path.Join(xdg.ConfigHome, "gelo")
+	DefaultConfigFile string = path.Join(DefaultConfigHome, "config.json")
+)