commit a19ef26236a4386453bd3a69cf6e5cc4c01d63a8 Author: Davidson Gomes Date: Mon Oct 21 11:14:12 2024 -0300 initial commit diff --git a/.dockerignore b/.dockerignore new file mode 100644 index 0000000..db4baea --- /dev/null +++ b/.dockerignore @@ -0,0 +1,3 @@ +main + +.env diff --git a/.env.example b/.env.example new file mode 100644 index 0000000..cee8df6 --- /dev/null +++ b/.env.example @@ -0,0 +1 @@ +PORT=4040 \ No newline at end of file diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..db4baea --- /dev/null +++ b/.gitignore @@ -0,0 +1,3 @@ +main + +.env diff --git a/Dockerfile b/Dockerfile new file mode 100644 index 0000000..12f06dd --- /dev/null +++ b/Dockerfile @@ -0,0 +1,29 @@ +# Usar uma imagem base do Go +FROM golang:1.21-alpine + +# Instalar ffmpeg +RUN apk update && apk add --no-cache ffmpeg + +# Definir o diretório de trabalho no container +WORKDIR /app + +# Copiar os arquivos go.mod e go.sum para o diretório de trabalho +COPY go.mod go.sum ./ + +# Baixar as dependências +RUN go mod download + +# Copiar o código-fonte para o container +COPY . . + +# Compilar o binário do Go +RUN go build -o main . + +# Definir a variável de ambiente para a porta +ENV PORT=4040 + +# Expor a porta definida +EXPOSE ${PORT} + +# Comando para rodar o servidor +CMD ["./main"] diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..cf57c93 --- /dev/null +++ b/LICENSE @@ -0,0 +1,21 @@ +MIT License + +Copyright (c) 2024 Evolution API + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. \ No newline at end of file diff --git a/README.md b/README.md new file mode 100644 index 0000000..de9a2df --- /dev/null +++ b/README.md @@ -0,0 +1,143 @@ +# Evolution Audio Converter + +Este projeto é um micro serviço em Go que processa arquivos de áudio para whatsapp, os converte para o formato **opus** e retorna tanto a duração do áudio quanto o arquivo convertido em base64. O serviço aceita arquivos de áudio enviados como **form-data**, **base64** ou **URL**. + +## Requisitos + +Antes de começar, você precisará ter os seguintes itens instalados: + +- [Go](https://golang.org/doc/install) (versão 1.21 ou superior) +- [Docker](https://docs.docker.com/get-docker/) (para rodar o projeto em um container) +- [FFmpeg](https://ffmpeg.org/download.html) (para processamento de áudio) + +## Instalação + +### Clonar o Repositório + +Clone este repositório em sua máquina local: + +```bash +git clone https://github.com/EvolutionAPI/evolution-audio-converter.git +cd evolution-audio-converter +``` + +### Instalar Dependências + +Instale as dependências do projeto: + +```bash +go mod tidy +``` + +### Instalar o FFmpeg + +O serviço depende do **FFmpeg** para converter o áudio. Certifique-se de que o FFmpeg está instalado no seu sistema. + +- No Ubuntu: + + ```bash + sudo apt update + sudo apt install ffmpeg + ``` + +- No MacOS (via Homebrew): + + ```bash + brew install ffmpeg + ``` + +- No Windows, baixe o FFmpeg [aqui](https://ffmpeg.org/download.html) e adicione-o ao `PATH` do sistema. + +### Configuração + +Crie um arquivo `.env` no diretório raiz do projeto com a seguinte configuração: + +```env +PORT=4040 +``` + +Isso define a porta onde o serviço será executado. + +## Rodando o Projeto + +### Localmente + +Para rodar o serviço localmente, use o seguinte comando: + +```bash +go run main.go +``` + +O servidor estará disponível em `http://localhost:4040`. + +### Usando Docker + +Se preferir rodar o serviço em um container Docker, siga os passos abaixo: + +1. **Buildar a imagem Docker**: + + ```bash + docker build -t audio-service . + ``` + +2. **Rodar o container**: + + ```bash + docker run -p 4040:4040 --env-file=.env audio-service + ``` + + Isso irá iniciar o container na porta especificada no arquivo `.env`. + +## Como Usar + +Você pode enviar requisições `POST` para o endpoint `/process-audio` com um arquivo de áudio nos seguintes formatos: + +- **Form-data** (para enviar arquivos) +- **Base64** (para enviar o áudio codificado em base64) +- **URL** (para enviar o link do arquivo de áudio) + +### Exemplo de Requisição via cURL + +#### Envio como Form-data + +```bash +curl -X POST -F "file=@caminho/do/audio.mp3" http://localhost:4040/process-audio +``` + +#### Envio como Base64 + +```bash +curl -X POST -d "base64=$(base64 caminho/do/audio.mp3)" http://localhost:4040/process-audio +``` + +#### Envio como URL + +```bash +curl -X POST -d "url=https://exemplo.com/caminho/para/audio.mp3" http://localhost:4040/process-audio +``` + +### Resposta + +A resposta será um JSON contendo a duração do áudio e o arquivo convertido em base64: + +```json +{ + "duration": 120, + "audio": "UklGR... (base64 do arquivo)" +} +``` + +- `duration`: A duração do áudio em segundos. +- `audio`: O arquivo de áudio convertido para o formato opus, codificado em base64. + +## Licença + +Este projeto está sob a licença [MIT](LICENSE). +``` + +### Resumo do Conteúdo: +- **Requisitos**: Dependências necessárias (Go, Docker, FFmpeg). +- **Instalação**: Como clonar o repositório, instalar dependências e configurar o arquivo `.env`. +- **Rodando o projeto**: Instruções para rodar o projeto localmente ou via Docker. +- **Como usar**: Exemplos de como fazer requisições para o serviço com `form-data`, `base64` ou URL, e o formato de resposta. +- **Licença**: Incluir uma seção para a licença, se aplicável. \ No newline at end of file diff --git a/go.mod b/go.mod new file mode 100644 index 0000000..4b1a01d --- /dev/null +++ b/go.mod @@ -0,0 +1,35 @@ +module github.com/EvolutionAPI/evolution-audio-converter + +go 1.21.1 + +require github.com/gin-gonic/gin v1.10.0 + +require ( + github.com/bytedance/sonic v1.11.6 // indirect + github.com/bytedance/sonic/loader v0.1.1 // indirect + github.com/cloudwego/base64x v0.1.4 // indirect + github.com/cloudwego/iasm v0.2.0 // indirect + github.com/gabriel-vasile/mimetype v1.4.3 // indirect + github.com/gin-contrib/sse v0.1.0 // indirect + github.com/go-playground/locales v0.14.1 // indirect + github.com/go-playground/universal-translator v0.18.1 // indirect + github.com/go-playground/validator/v10 v10.20.0 // indirect + github.com/goccy/go-json v0.10.2 // indirect + github.com/joho/godotenv v1.5.1 // indirect + github.com/json-iterator/go v1.1.12 // indirect + github.com/klauspost/cpuid/v2 v2.2.7 // indirect + github.com/leodido/go-urn v1.4.0 // indirect + github.com/mattn/go-isatty v0.0.20 // indirect + github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect + github.com/modern-go/reflect2 v1.0.2 // indirect + github.com/pelletier/go-toml/v2 v2.2.2 // indirect + github.com/twitchyliquid64/golang-asm v0.15.1 // indirect + github.com/ugorji/go/codec v1.2.12 // indirect + golang.org/x/arch v0.8.0 // indirect + golang.org/x/crypto v0.23.0 // indirect + golang.org/x/net v0.25.0 // indirect + golang.org/x/sys v0.20.0 // indirect + golang.org/x/text v0.15.0 // indirect + google.golang.org/protobuf v1.34.1 // indirect + gopkg.in/yaml.v3 v3.0.1 // indirect +) diff --git a/go.sum b/go.sum new file mode 100644 index 0000000..7087cb7 --- /dev/null +++ b/go.sum @@ -0,0 +1,91 @@ +github.com/bytedance/sonic v1.11.6 h1:oUp34TzMlL+OY1OUWxHqsdkgC/Zfc85zGqw9siXjrc0= +github.com/bytedance/sonic v1.11.6/go.mod h1:LysEHSvpvDySVdC2f87zGWf6CIKJcAvqab1ZaiQtds4= +github.com/bytedance/sonic/loader v0.1.1 h1:c+e5Pt1k/cy5wMveRDyk2X4B9hF4g7an8N3zCYjJFNM= +github.com/bytedance/sonic/loader v0.1.1/go.mod h1:ncP89zfokxS5LZrJxl5z0UJcsk4M4yY2JpfqGeCtNLU= +github.com/cloudwego/base64x v0.1.4 h1:jwCgWpFanWmN8xoIUHa2rtzmkd5J2plF/dnLS6Xd/0Y= +github.com/cloudwego/base64x 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b/main.go @@ -0,0 +1,140 @@ +package main + +import ( + "bytes" + "encoding/base64" + "errors" + "fmt" + "io" + "io/ioutil" + "net/http" + "os" + "os/exec" + "regexp" + "strconv" + "strings" + + "github.com/gin-gonic/gin" + "github.com/joho/godotenv" +) + +func convertAudioToOpusWithDuration(inputData []byte) ([]byte, int, error) { + cmd := exec.Command("ffmpeg", "-i", "pipe:0", "-ac", "1", "-ar", "16000", "-c:a", "libopus", "-f", "ogg", "pipe:1") + + var outBuffer bytes.Buffer + var errBuffer bytes.Buffer + + cmd.Stdin = bytes.NewReader(inputData) + cmd.Stdout = &outBuffer + cmd.Stderr = &errBuffer + + err := cmd.Run() + if err != nil { + return nil, 0, fmt.Errorf("error during conversion: %v, details: %s", err, errBuffer.String()) + } + + convertedData := outBuffer.Bytes() + + outputText := errBuffer.String() + + splitTime := strings.Split(outputText, "time=") + + if len(splitTime) < 2 { + return nil, 0, errors.New("duração não encontrada") + } + + re := regexp.MustCompile(`(\d+):(\d+):(\d+\.\d+)`) + matches := re.FindStringSubmatch(string(splitTime[2])) + if len(matches) != 4 { + return nil, 0, errors.New("formato de duração não encontrado") + } + + hours, _ := strconv.ParseFloat(matches[1], 64) + minutes, _ := strconv.ParseFloat(matches[2], 64) + seconds, _ := strconv.ParseFloat(matches[3], 64) + duration := int(hours*3600 + minutes*60 + seconds) + + return convertedData, duration, nil +} + +func processAudio(c *gin.Context) { + var inputData []byte + var err error + + // Verifica se o arquivo foi enviado como form-data + file, _, err := c.Request.FormFile("file") + if err == nil { + inputData, err = ioutil.ReadAll(file) + if err != nil { + c.JSON(http.StatusBadRequest, gin.H{"error": "Erro ao ler o arquivo"}) + return + } + } else { + // Verifica se foi enviado um base64 + base64Data := c.PostForm("base64") + if base64Data != "" { + inputData, err = base64.StdEncoding.DecodeString(base64Data) + if err != nil { + c.JSON(http.StatusBadRequest, gin.H{"error": "Erro ao decodificar base64"}) + return + } + } else { + // Verifica se foi enviada uma URL + url := c.PostForm("url") + if url != "" { + resp, err := http.Get(url) + if err != nil { + c.JSON(http.StatusBadRequest, gin.H{"error": "Erro ao obter o arquivo da URL"}) + return + } + defer resp.Body.Close() + inputData, err = io.ReadAll(resp.Body) + if err != nil { + c.JSON(http.StatusBadRequest, gin.H{"error": "Erro ao ler o arquivo da URL"}) + return + } + } else { + c.JSON(http.StatusBadRequest, gin.H{"error": "Nenhum arquivo, base64 ou URL fornecido"}) + return + } + } + } + + // Chama a função para converter o áudio e obter a duração + convertedData, duration, err := convertAudioToOpusWithDuration(inputData) + if err != nil { + c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()}) + return + } + + // Codifica o áudio convertido para base64 + base64Audio := base64.StdEncoding.EncodeToString(convertedData) + + // Retorna a resposta em JSON + c.JSON(http.StatusOK, gin.H{ + "duration": duration, + "audio": base64Audio, + }) +} + +func main() { + // Carrega o arquivo .env + err := godotenv.Load() + if err != nil { + fmt.Println("Erro ao carregar o arquivo .env") + } + + // Obtém a porta do arquivo .env ou usa a porta 8080 por padrão + port := os.Getenv("PORT") + if port == "" { + port = "8080" + } + + router := gin.Default() + + // Endpoint para processar o áudio + router.POST("/process-audio", processAudio) + + // Inicia o servidor na porta especificada + router.Run(":" + port) +}