first commit

.github/workflows/release.yml

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+name: goreleaser
+
+on:
+  push:
+    # run only against tags
+    tags:
+      - '*'
+
+permissions:
+  contents: write
+  # packages: write
+  # issues: write
+
+jobs:
+  goreleaser:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+      - run: git fetch --force --tags
+      - uses: actions/setup-go@v3
+        with:
+          go-version: '>=1.19.3'
+          cache: true
+      # More assembly might be required: Docker logins, GPG, etc. It all depends
+      # on your needs.
+      - uses: goreleaser/goreleaser-action@v2
+        with:
+          # either 'goreleaser' (default) or 'goreleaser-pro':
+          distribution: goreleaser
+          version: latest
+          args: release --rm-dist
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          # Your GoReleaser Pro key, if you are using the 'goreleaser-pro'
+          # distribution:
+          # GORELEASER_KEY: ${{ secrets.GORELEASER_KEY }}

.gitignore

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+.DS_Store
+dist/

.goreleaser.yaml

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+# This is an example .goreleaser.yml file with some sensible defaults.
+# Make sure to check the documentation at https://goreleaser.com
+before:
+  hooks:
+    # You may remove this if you don't use go modules.
+    - go mod tidy
+    # you may remove this if you don't need go generate
+    - go generate ./...
+builds:
+  - env:
+      - CGO_ENABLED=0
+    goos:
+      - linux
+      - windows
+      - darwin
+archives:
+  - replacements:
+      darwin: Darwin
+      linux: Linux
+      windows: Windows
+      386: i386
+      amd64: x86_64
+checksum:
+  name_template: 'checksums.txt'
+snapshot:
+  name_template: "{{ incpatch .Version }}-next"
+changelog:
+  sort: asc
+  filters:
+    exclude:
+      - '^docs:'
+      - '^test:'
+
+# modelines, feel free to remove those if you don't want/use them:
+# yaml-language-server: $schema=https://goreleaser.com/static/schema.json
+# vim: set ts=2 sw=2 tw=0 fo=cnqoj

README.md

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+# json-converter
+
+![image](asset/excel.png)
+
+json-converter is CLI to convert JSON to Any other files like: 
+- Excel
+- CSV
+- and more
+
+## Installation
+
+### Using the github repository
+```sh
+git clone https://github.com/kecci/json-converter.git
+cd json-converter
+go build -o json-converter .
+./json-converter --help
+```
+
+## Usage
+```
+./json-converter excel
+```
+
+## Example
+
+### Example JSON
+`./example/example.json`
+```json
+[
+    {
+      "isbn": "123-456-222",
+      "author": {
+        "lastname": "Doe",
+        "firstname": "Jane"
+      },
+      "editor": {
+        "lastname": "Smith",
+        "firstname": "Jane"
+      },
+      "title": "The Ultimate Database Study Guide",
+      "category": [
+        "Non-Fiction",
+        "Technology"
+      ]
+    },
+    {
+      "isbn": "345-666-777",
+      "author": {
+        "lastname": "Han",
+        "firstname": "Some"
+      },
+      "editor": {
+        "lastname": "Marry",
+        "firstname": "Jane"
+      },
+      "title": "The Story Behind Spiderman",
+      "category": [
+        "Fiction",
+        "Comic"
+      ]
+    }
+  ]
+```
+
+### Running Command json-converter excel
+```sh
+./json-converter excel ./example/example.json ./example/example.xlsx
+```
+
+### Result
+| author.firstname | author.lastname | category.0  | category.1 | editor.firstname | editor.lastname | isbn        | title                             |
+|------------------|-----------------|-------------|------------|------------------|-----------------|-------------|-----------------------------------|
+| Jane             | Doe             | Non-Fiction | Technology | Jane             | Smith           | 123-456-222 | The Ultimate Database Study Guide |
+| Some             | Han             | Fiction     | Comic      | Jane             | Marry           | 345-666-777 | The Story Behind Spiderman        |

cmd/json_converter/json_converter.go

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+package json_converter
+
+import (
+	"encoding/json"
+	"fmt"
+	"io/ioutil"
+	"log"
+	"os"
+	"sort"
+
+	"github.com/nqd/flat"
+	"github.com/xuri/excelize/v2"
+)
+
+// JsonToExcel converter
+func JsonToExcel(jsonLocation, excelLocation string) {
+
+	// Location file path
+	// > /Users/kecci/Downloads/example.json
+	// > C:/Program Files/Documents/example.json
+	jsonFile, err := os.Open(jsonLocation)
+	if err != nil {
+		log.Fatal(err)
+		return
+	}
+	defer jsonFile.Close()
+
+	byteValue, _ := ioutil.ReadAll(jsonFile)
+
+	var jsonMaps []map[string]interface{}
+	err = json.Unmarshal([]byte(byteValue), &jsonMaps)
+	if err != nil {
+		log.Fatal(err)
+		return
+	}
+
+	jsonNormalized := BulkNormalize(jsonMaps)
+	if len(jsonNormalized) == 0 {
+		return
+	}
+
+	f := excelize.NewFile()
+	sheetName := "Sheet1"
+	sheetIndex := f.GetSheetIndex(sheetName)
+
+	// Header
+	jsonFirst := jsonNormalized[0]
+	headerKeys := make([]string, 0, len(jsonFirst))
+	for k := range jsonFirst {
+		headerKeys = append(headerKeys, k)
+	}
+	sort.Strings(headerKeys)
+
+	columnHeaderCount := 1
+	for _, k := range headerKeys {
+		f.SetCellValue(sheetName, fmt.Sprintf("%s1", GetColumnName(columnHeaderCount)), k)
+		columnHeaderCount += 1
+	}
+
+	rowCount := 2
+	for _, jsonData := range jsonNormalized {
+		columnCount := 1
+		for _, k := range headerKeys {
+			f.SetCellValue(sheetName, fmt.Sprintf("%s%v", GetColumnName(columnCount), rowCount), jsonData[k])
+			columnCount += 1
+		}
+		rowCount += 1
+	}
+
+	// Set active sheet of the workbook.
+	f.SetActiveSheet(sheetIndex)
+
+	// Save spreadsheet by the given path.
+	// Location file path
+	// > /Users/kecci/Downloads/example.xlsx
+	// > C:/Program Files/Documents/example.xlsx
+	if err := f.SaveAs(excelLocation); err != nil {
+		log.Fatal(err)
+	}
+
+	println("Success saved on", excelLocation)
+}
+
+// BulkNormalize returns a BulkNormalize
+func BulkNormalize(jsonMaps []map[string]interface{}) (res []map[string]interface{}) {
+	for _, jsonMap := range jsonMaps {
+		out, err := flat.Flatten(jsonMap, nil)
+		if err != nil {
+			return res
+		}
+
+		res = append(res, out)
+	}
+	return res
+}
+
+// GetColumnName excel
+func GetColumnName(col int) string {
+	name := make([]byte, 0, 3) // max 16,384 columns (2022)
+	const aLen = 'Z' - 'A' + 1 // alphabet length
+	for ; col > 0; col /= aLen + 1 {
+		name = append(name, byte('A'+(col-1)%aLen))
+	}
+	for i, j := 0, len(name)-1; i < j; i, j = i+1, j-1 {
+		name[i], name[j] = name[j], name[i]
+	}
+	return string(name)
+}

cmd/json_converter/json_to_excel.go

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+package json_converter
+
+import (
+	"github.com/spf13/cobra"
+)
+
+var excelCmd = &cobra.Command{
+	Use:     "excel",
+	Short:   "Convert json to excel file",
+	Example: "json-converter excel /Users/kecci/Downloads/message_transaction_2022_nov.json /Users/kecci/Downloads/message_transaction_2022_nov.xlsx",
+	Aliases: []string{"xlsx"},
+	Args:    cobra.ExactArgs(2),
+	Run: func(cmd *cobra.Command, args []string) {
+		JsonToExcel(args[0], args[1])
+	},
+}
+
+func init() {
+	rootCmd.AddCommand(excelCmd)
+}

cmd/json_converter/root.go

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+package json_converter
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/spf13/cobra"
+)
+
+var version = "v0.0.1"
+
+var rootCmd = &cobra.Command{
+	Use:     "",
+	Version: version,
+	Short:   "json-converter - a simple CLI to conversion json and excel files.",
+	Long:    `json-converter - a simple CLI to conversion json and excel files.`,
+	Run: func(cmd *cobra.Command, args []string) {
+		cmd.Help()
+	},
+}
+
+func Execute() {
+	rootCmd.CompletionOptions = cobra.CompletionOptions{
+		DisableDefaultCmd: true,
+	}
+	if err := rootCmd.Execute(); err != nil {
+		fmt.Fprintf(os.Stderr, "Whoops. There was an error while executing your CLI '%s'", err)
+		os.Exit(1)
+	}
+}

example/example.json

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+[
+    {
+      "isbn": "123-456-222",
+      "author": {
+        "lastname": "Doe",
+        "firstname": "Jane"
+      },
+      "editor": {
+        "lastname": "Smith",
+        "firstname": "Jane"
+      },
+      "title": "The Ultimate Database Study Guide",
+      "category": [
+        "Non-Fiction",
+        "Technology"
+      ]
+    },
+    {
+      "isbn": "345-666-777",
+      "author": {
+        "lastname": "Han",
+        "firstname": "Some"
+      },
+      "editor": {
+        "lastname": "Marry",
+        "firstname": "Jane"
+      },
+      "title": "The Story Behind Spiderman",
+      "category": [
+        "Fiction",
+        "Comic"
+      ]
+    }
+  ]

go.mod

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+module github.com/kecci/json-converter
+
+go 1.17
+
+require (
+	github.com/nqd/flat v0.2.0
+	github.com/spf13/cobra v1.6.1
+	github.com/xuri/excelize/v2 v2.6.1
+)
+
+require (
+	github.com/imdario/mergo v0.3.12 // indirect
+	github.com/inconshreveable/mousetrap v1.0.1 // indirect
+	github.com/mohae/deepcopy v0.0.0-20170929034955-c48cc78d4826 // indirect
+	github.com/richardlehane/mscfb v1.0.4 // indirect
+	github.com/richardlehane/msoleps v1.0.3 // indirect
+	github.com/spf13/pflag v1.0.5 // indirect
+	github.com/xuri/efp v0.0.0-20220603152613-6918739fd470 // indirect
+	github.com/xuri/nfp v0.0.0-20220409054826-5e722a1d9e22 // indirect
+	golang.org/x/crypto v0.0.0-20220817201139-bc19a97f63c8 // indirect
+	golang.org/x/net v0.0.0-20220812174116-3211cb980234 // indirect
+	golang.org/x/text v0.3.7 // indirect
+)