Initial setup + GoReleaser

.gitignore

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+.DS_Store
+.idea/
+data/

.goreleaser.yml

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+build:
+  main: ./cmd/go-youtube-accrued-royalties/main.go
+  goarch:
+    - amd64
+brew:
+  github:
+    owner: daniel-zahariev
+    name: homebrew-tap
+  homepage:  https://github.com/daniel-zahariev/go-youtube-accrued-royalties
+  description: Command line tool for extracting records from YouTube accrued publishing royalties.
+  folder: Formula

cmd/go-youtube-accrued-royalties/main.go

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+package main
+
+import (
+	"fmt"
+	royalties "github.com/daniel-zahariev/go-youtube-accrued-royalties"
+	"os"
+)
+
+var (
+	version = "master"
+	date    = "1970-01-01"
+)
+
+func showVersion() {
+	fmt.Printf("go-youtube-accrued-royalties: %v, build %v\n", version, date)
+}
+
+func main() {
+	if len(os.Args) < 2 {
+		fmt.Println("Usage:")
+		fmt.Println("Process file: ./go-youtube-accrued-royalties <path/to/royalties/file>")
+		fmt.Println("Show version: ./go-youtube-accrued-royalties (-v|--version) ")
+		return
+	} else if (os.Args[1] == "-v") || (os.Args[1] == "--version") {
+		showVersion()
+		return
+	}
+
+	lines, err := royalties.ReadFile(os.Args[1])
+	if err != nil {
+		fmt.Println(err)
+	} else {
+		fmt.Printf("Read the file '%v' - it has %v lines.\n", os.Args[1], lines)
+	}
+}

royalties.go

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+package go_youtube_accrued_royalties
+
+import (
+	"encoding/csv"
+	"fmt"
+	"io"
+	"os"
+)
+
+const AccruedRoyaltiesRecordFieldsCount = 15
+
+//type AccruedRoyaltiesRecord struct {
+//	CustomId                 string
+//	AssetId                  string
+//	Title                    string
+//	Writers                  string
+//	Iswc                     string
+//	HfaSongCode              string
+//	MatchPolicy              string
+//	PublisherName            string
+//	SyncOwnershipShare       string
+//	SyncOwnershipTerritory   string
+//	SyncOwnershipRestriction string
+//	RelatedAssetId           string
+//	SrIsrc                   string
+//	SrArtist                 string
+//	RelatedTitle             string
+//}
+
+func ReadFile(filePath string) (int, error) {
+	linesCount := 0
+
+	royaltiesFile, err := os.Open(filePath)
+	if err != nil {
+		return linesCount, err
+	}
+
+	csvReader := csv.NewReader(royaltiesFile)
+
+	for {
+		line, err := csvReader.Read()
+		if err == io.EOF {
+			err = nil
+			break
+		} else if err != nil {
+			return linesCount, err
+		} else if length := len(line); length < AccruedRoyaltiesRecordFieldsCount {
+			err = fmt.Errorf("line %v is incomplete. It only has %v columns", linesCount, length)
+			return linesCount, err
+		}
+		if linesCount == 0 {
+			linesCount += 1
+			continue
+		}
+
+		//record := &AccruedRoyaltiesRecord{
+		//	CustomId:                 line[0],
+		//	AssetId:                  line[1],
+		//	Title:                    line[2],
+		//	Writers:                  line[3],
+		//	Iswc:                     line[4],
+		//	HfaSongCode:              line[5],
+		//	MatchPolicy:              line[6],
+		//	PublisherName:            line[7],
+		//	SyncOwnershipShare:       line[8],
+		//	SyncOwnershipTerritory:   line[9],
+		//	SyncOwnershipRestriction: line[10],
+		//	RelatedAssetId:           line[11],
+		//	SrIsrc:                   line[12],
+		//	SrArtist:                 line[13],
+		//	RelatedTitle:             line[14],
+		//}
+
+		linesCount += 1
+	}
+
+	return linesCount, nil
+}