### Install OFDGo Library

Source: https://github.com/xiaoqidun/ofdgo/blob/main/README.md

Add the OFDGo package to your Go project.

```shell
go get -u github.com/xiaoqidun/ofdgo
```

--------------------------------

### Build OFDGo WASM and WebUI

Source: https://github.com/xiaoqidun/ofdgo/blob/main/README.md

Compile the project for WASM and Windows environments using batch commands.

```batch
:: 1. 编译OFDGo WASM
set GOOS=js
set GOARCH=wasm
go build -o assets/webui/ofdgo.wasm -trimpath -ldflags "-s -w -buildid=" ./cmd/webui/wasm.go
:: 2. 编译OFDGo WebUI
set GOOS=windows
set GOARCH=amd64
go build -o ofdgo_webui.exe -trimpath -ldflags "-s -w -buildid=" ./cmd/webui/webui.go
```

--------------------------------

### Deploy OFDGo via Docker

Source: https://github.com/xiaoqidun/ofdgo/blob/main/README.md

Run the OFDGo service using a pre-built Docker image.

```shell
docker run -d -p 80:80 ccr.ccs.tencentyun.com/xiaoqidun/ofdgo:latest
```

--------------------------------

### Render OFD to PDF

Source: https://github.com/xiaoqidun/ofdgo/blob/main/README.md

Convert an OFD file to a multi-page PDF document using the library.

```go
package main

import (
	"log"
	"os"

	"github.com/xiaoqidun/ofdgo"
)

func main() {
	// 1. 打开OFD文件
	reader, err := ofdgo.Open("test.ofd")
	if err != nil {
		log.Fatal(err)
	}
	defer reader.Close()
	// 2. 创建PDF文件
	pdfFile, err := os.Create("test.pdf")
	if err != nil {
		log.Fatal(err)
	}
	defer pdfFile.Close()
	// 3. 渲染PDF文件
	renderer := ofdgo.NewRenderer(reader)
	if err := renderer.RenderToMultiPagePDF(pdfFile); err != nil {
		log.Fatal(err)
	}
}
```

--------------------------------

### Verify OFD Signatures

Source: https://github.com/xiaoqidun/ofdgo/blob/main/README.md

Validate digital signatures within an OFD file by reading the file bytes.

```go
package main

import (
	"log"
	"os"

	"github.com/xiaoqidun/ofdgo"
)

func main() {
	// 1. 打开OFD文件
	data, err := os.ReadFile("test.ofd")
	if err != nil {
		log.Fatal(err)
	}
	// 2. 验证OFD签名
	reports, err := ofdgo.VerifySignaturesBytes(data)
	if err != nil {
		log.Fatal(err)
	}
	// 3. 判断验证结果
	if len(reports) == 0 {
		log.Println("文件未发现签名")
		return
	}
	valid := true
	for _, report := range reports {
		if report.IntegrityValid() {
			log.Printf("签名%s验证通过", report.ID)
			continue
		}
		valid = false
		if report.Error == "" {
			log.Printf("签名%s验证失败", report.ID)
		} else {
			log.Printf("签名%s验证失败: %s", report.ID, report.Error)
		}
	}
	if !valid {
		os.Exit(1)
	}
}
```

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