From 8adbd9489756bfdef36a0c1244f55ee751d268ef Mon Sep 17 00:00:00 2001 From: Neur0toxine Date: Fri, 13 Oct 2023 14:37:41 +0300 Subject: [PATCH] inital commit --- .editorconfig | 21 ++ .gitignore | 27 +++ LICENSE | 21 ++ Makefile | 39 ++++ README.md | 12 + cmd/main.go | 73 ++++++ docker-compose.yml | 20 ++ docs/.gitkeep | 0 go.mod | 81 +++++++ go.sum | 311 +++++++++++++++++++++++++ internal/cache/profiles.go | 32 +++ internal/dto/error.go | 5 + internal/dto/profile.go | 6 + internal/dto/request.go | 5 + internal/log/debug.go | 20 ++ internal/middleware/profile.go | 50 ++++ internal/proxy/direct_provider.go | 13 ++ internal/proxy/provider.go | 10 + internal/proxy/random_list_provider.go | 112 +++++++++ internal/waapi/client.go | 89 +++++++ 20 files changed, 947 insertions(+) create mode 100644 .editorconfig create mode 100644 .gitignore create mode 100644 LICENSE create mode 100644 Makefile create mode 100644 README.md create mode 100644 cmd/main.go create mode 100644 docker-compose.yml create mode 100644 docs/.gitkeep create mode 100644 go.mod create mode 100644 go.sum create mode 100644 internal/cache/profiles.go create mode 100644 internal/dto/error.go create mode 100644 internal/dto/profile.go create mode 100644 internal/dto/request.go create mode 100644 internal/log/debug.go create mode 100644 internal/middleware/profile.go create mode 100644 internal/proxy/direct_provider.go create mode 100644 internal/proxy/provider.go create mode 100644 internal/proxy/random_list_provider.go create mode 100644 internal/waapi/client.go diff --git a/.editorconfig b/.editorconfig new file mode 100644 index 0000000..53ca286 --- /dev/null +++ b/.editorconfig @@ -0,0 +1,21 @@ +root = true + +[*] +insert_final_newline = true +charset = utf-8 +trim_trailing_whitespace = true +indent_style = space +indent_size = 2 + +[{Makefile,go.mod,go.sum,*.go,.gitmodules}] +indent_style = tab +indent_size = 4 + +[*.md] +indent_size = 4 +trim_trailing_whitespace = false + +eclint_indent_style = unset + +[{Dockerfile,docker-compose.yml}] +indent_size = 4 diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..93db186 --- /dev/null +++ b/.gitignore @@ -0,0 +1,27 @@ +# If you prefer the allow list template instead of the deny list, see community template: +# https://github.com/github/gitignore/blob/main/community/Golang/Go.AllowList.gitignore +# +# Binaries for programs and plugins +*.exe +*.exe~ +*.dll +*.so +*.dylib +wa-profile-api + +# Test binary, built with `go test -c` +*.test + +# Output of the go coverage tool, specifically when used with LiteIDE +*.out + +# Dependency directories (remove the comment below to include it) +vendor/ + +# Go workspace file +go.work +.idea + +# Autogenerated documentation +docs/ +!docs/.gitkeep diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..a0c1c68 --- /dev/null +++ b/LICENSE @@ -0,0 +1,21 @@ +MIT License + +Copyright (c) 2023 Neur0toxine + +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. diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..d880bc8 --- /dev/null +++ b/Makefile @@ -0,0 +1,39 @@ +SHELL = /bin/bash -o pipefail +export PATH := $(shell go env GOPATH)/bin:$(PATH) + +ROOT_DIR=$(shell dirname $(realpath $(lastword $(MAKEFILE_LIST)))) +SRC_DIR=$(ROOT_DIR)/cmd +BIN=$(ROOT_DIR)/wa-profile-api +GO_VERSION=$(shell go version | sed -e 's/go version //') + +build: deps fmt swagger ## Build the app + @echo "==> Building for prod with ${GO_VERSION}" + @cd $(SRC_DIR) && CGO_ENABLED=0 go build -buildvcs=false -tags=release -o $(BIN) . + @echo $(BIN) + +run: build # Build and run the app + @echo "==> Running" + @${BIN} + +fmt: ## Run gofmt + @echo "==> Running gofmt" + @gofmt -l -s -w `go list -buildvcs=false -f '{{.Dir}}' ${ROOT_DIR}/... | grep -v /vendor/` + +swagger: swag_install ## Generate API documentation. + @swag init -g cmd/main.go + +deps: ## Install dependencies + @echo "==> Installing dependencies" + @go mod tidy + @go mod vendor + +swag_install: +ifeq (, $(shell command -v swag 2> /dev/null)) + @echo "==> Installing swag tool..." + @go install github.com/swaggo/swag/cmd/swag@latest +endif + +help: ## Help + @grep -E '(^[a-zA-Z_-]+:.*?##.*$$)|(^##)' $(firstword $(MAKEFILE_LIST)) | \ + awk 'BEGIN {FS = ":.*?## "}; {printf "\033[32m%-24s\033[0m %s\n", $$1, $$2}' | \ + sed -e 's/\[32m## /[33m/' && printf "\n" diff --git a/README.md b/README.md new file mode 100644 index 0000000..fa0971b --- /dev/null +++ b/README.md @@ -0,0 +1,12 @@ +# WhatsApp Profile API + +`/docs` contains Swagger documentation. + +# Configuration + +Through environment: + +| Key | Description | Default value | +|-------------|-------------------------------------------------|---------------| +| `PORT` | Server port | `8090` | +| `USE_PROXY` | Whether to use free proxies for crawling or not | `0` (`false`) | diff --git a/cmd/main.go b/cmd/main.go new file mode 100644 index 0000000..db385af --- /dev/null +++ b/cmd/main.go @@ -0,0 +1,73 @@ +package main + +import ( + "os" + + "github.com/Neur0toxine/wa-profile-api/internal/log" + "github.com/Neur0toxine/wa-profile-api/internal/middleware" + "github.com/Neur0toxine/wa-profile-api/internal/proxy" + "github.com/Neur0toxine/wa-profile-api/internal/waapi" + "github.com/go-playground/validator/v10" + "github.com/iris-contrib/swagger" + "github.com/iris-contrib/swagger/swaggerFiles" + "github.com/kataras/iris/v12" + + _ "github.com/Neur0toxine/wa-profile-api/docs" +) + +const ( + EnvPort = "PORT" + EnvUseProxy = "USE_PROXY" +) + +func registerRoutes(c *iris.APIContainer) { + log.Debug("initializing main route & proxies") + proxyProvider := proxy.NewDirectProvider() + if os.Getenv(EnvUseProxy) == "1" { + proxyProvider = proxy.NewRandomListProvider() + } + + waapiClient := waapi.NewClient(proxyProvider) + c.Use(func(c iris.Context) { + c.Values().Set(proxy.ProviderKey, proxyProvider) + c.Values().Set(waapi.ClientKey, waapiClient) + c.Next() + }) + c.Get("/api/v1/profile", middleware.GetProfileHandler) + log.Debug("done") +} + +func registerAPIDocs(c *iris.APIContainer) { + log.Debug("initializing API docs...") + swaggerUI := swagger.Handler(swaggerFiles.Handler, + swagger.URL("/docs/swagger.json"), + swagger.DeepLinking(true), + swagger.Prefix("/docs"), + ) + + c.Get("/docs", swaggerUI) + c.Get("/docs/{any:path}", swaggerUI) + log.Debug("API documentation will be available at /docs") +} + +// @title WhatsApp Profile API +// @version 1.0 +// @description This API can help you get avatars and profile names using WhatsApp phone number. +// @BasePath /api/v1 +func main() { + app := iris.New() + if !log.IsDebug { + app.Configure(iris.WithoutStartupLog) + } + app.Use(iris.Compression) + app.Validator = validator.New() + app.ConfigureContainer(registerAPIDocs, registerRoutes) + + port := os.Getenv(EnvPort) + if port == "" { + port = "8090" + } + + log.Debug("running the app now...") + app.Run(iris.Addr(":" + port)) +} diff --git a/docker-compose.yml b/docker-compose.yml new file mode 100644 index 0000000..e45a6ac --- /dev/null +++ b/docker-compose.yml @@ -0,0 +1,20 @@ +version: '2.1' + +services: + app: + image: "neur0toxine/golang-alpine:1.21" + working_dir: /app + user: ${UID:-1000}:${GID:-1000} + networks: + - default + volumes: + - ./:/app + environment: + GOCACHE: /go + ports: + - ${MG_APP_ADDR:-8090}:8090 + command: make run + +networks: + default: + driver: bridge diff --git a/docs/.gitkeep b/docs/.gitkeep new file mode 100644 index 0000000..e69de29 diff --git a/go.mod b/go.mod new file mode 100644 index 0000000..d4f9c1d --- /dev/null +++ b/go.mod @@ -0,0 +1,81 @@ +module github.com/Neur0toxine/wa-profile-api + +go 1.21.2 + +require ( + github.com/go-playground/validator/v10 v10.15.5 + github.com/gocolly/colly v1.2.0 + github.com/iris-contrib/swagger v0.0.0-20230820002204-56b041d3471a + github.com/jellydator/ttlcache/v2 v2.11.1 + github.com/kataras/iris/v12 v12.2.7 + github.com/swaggo/swag v1.16.2 +) + +require ( + github.com/BurntSushi/toml v1.3.2 // indirect + github.com/CloudyKit/fastprinter v0.0.0-20200109182630-33d98a066a53 // indirect + github.com/CloudyKit/jet/v6 v6.2.0 // indirect + github.com/Joker/jade v1.1.3 // indirect + github.com/KyleBanks/depth v1.2.1 // indirect + github.com/PuerkitoBio/goquery v1.8.1 // indirect + github.com/Shopify/goreferrer v0.0.0-20220729165902-8cddb4f5de06 // indirect + github.com/andybalholm/brotli v1.0.5 // indirect + github.com/andybalholm/cascadia v1.3.1 // indirect + github.com/antchfx/htmlquery v1.3.0 // indirect + github.com/antchfx/xmlquery v1.3.18 // indirect + github.com/antchfx/xpath v1.2.4 // indirect + github.com/aymerick/douceur v0.2.0 // indirect + github.com/fatih/structs v1.1.0 // indirect + github.com/flosch/pongo2/v4 v4.0.2 // indirect + github.com/gabriel-vasile/mimetype v1.4.2 // indirect + github.com/go-openapi/jsonpointer v0.20.0 // indirect + github.com/go-openapi/jsonreference v0.20.2 // indirect + github.com/go-openapi/spec v0.20.9 // indirect + github.com/go-openapi/swag v0.22.4 // indirect + github.com/go-playground/locales v0.14.1 // indirect + github.com/go-playground/universal-translator v0.18.1 // indirect + github.com/gobwas/glob v0.2.3 // indirect + github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect + github.com/golang/protobuf v1.5.2 // indirect + github.com/golang/snappy v0.0.4 // indirect + github.com/gomarkdown/markdown v0.0.0-20230922112808-5421fefb8386 // indirect + github.com/google/uuid v1.3.1 // indirect + github.com/gorilla/css v1.0.0 // indirect + github.com/iris-contrib/schema v0.0.6 // indirect + github.com/josharian/intern v1.0.0 // indirect + github.com/kataras/blocks v0.0.8 // indirect + github.com/kataras/golog v0.1.9 // indirect + github.com/kataras/pio v0.0.12 // indirect + github.com/kataras/sitemap v0.0.6 // indirect + github.com/kataras/tunnel v0.0.4 // indirect + github.com/kennygrant/sanitize v1.2.4 // indirect + github.com/klauspost/compress v1.17.0 // indirect + github.com/leodido/go-urn v1.2.4 // indirect + github.com/mailgun/raymond/v2 v2.0.48 // indirect + github.com/mailru/easyjson v0.7.7 // indirect + github.com/microcosm-cc/bluemonday v1.0.25 // indirect + github.com/rogpeppe/go-internal v1.11.0 // indirect + github.com/russross/blackfriday/v2 v2.1.0 // indirect + github.com/saintfish/chardet v0.0.0-20230101081208-5e3ef4b5456d // indirect + github.com/schollz/closestmatch v2.1.0+incompatible // indirect + github.com/sirupsen/logrus v1.8.1 // indirect + github.com/tdewolff/minify/v2 v2.12.9 // indirect + github.com/tdewolff/parse/v2 v2.6.8 // indirect + github.com/temoto/robotstxt v1.1.2 // indirect + github.com/valyala/bytebufferpool v1.0.0 // indirect + github.com/vmihailenco/msgpack/v5 v5.3.5 // indirect + github.com/vmihailenco/tagparser/v2 v2.0.0 // indirect + github.com/yosssi/ace v0.0.5 // indirect + golang.org/x/crypto v0.14.0 // indirect + golang.org/x/exp v0.0.0-20230905200255-921286631fa9 // indirect + golang.org/x/net v0.17.0 // indirect + golang.org/x/sync v0.4.0 // indirect + golang.org/x/sys v0.13.0 // indirect + golang.org/x/text v0.13.0 // indirect + golang.org/x/time v0.3.0 // indirect + golang.org/x/tools v0.14.0 // indirect + google.golang.org/appengine v1.6.8 // indirect + google.golang.org/protobuf v1.31.0 // indirect + gopkg.in/ini.v1 v1.67.0 // indirect + gopkg.in/yaml.v3 v3.0.1 // indirect +) diff --git a/go.sum b/go.sum new file mode 100644 index 0000000..5da00f2 --- /dev/null +++ b/go.sum @@ -0,0 +1,311 @@ +github.com/BurntSushi/toml v1.3.2 h1:o7IhLm0Msx3BaB+n3Ag7L8EVlByGnpq14C4YWiu/gL8= +github.com/BurntSushi/toml v1.3.2/go.mod h1:CxXYINrC8qIiEnFrOxCa7Jy5BFHlXnUU2pbicEuybxQ= +github.com/CloudyKit/fastprinter 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h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA= +gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM= +moul.io/http2curl/v2 v2.3.0 h1:9r3JfDzWPcbIklMOs2TnIFzDYvfAZvjeavG6EzP7jYs= +moul.io/http2curl/v2 v2.3.0/go.mod h1:RW4hyBjTWSYDOxapodpNEtX0g5Eb16sxklBqmd2RHcE= diff --git a/internal/cache/profiles.go b/internal/cache/profiles.go new file mode 100644 index 0000000..9d9144f --- /dev/null +++ b/internal/cache/profiles.go @@ -0,0 +1,32 @@ +package cache + +import ( + "time" + + "github.com/Neur0toxine/wa-profile-api/internal/dto" + "github.com/jellydator/ttlcache/v2" +) + +type profiles struct { + c *ttlcache.Cache +} + +var Profiles *profiles + +func init() { + c := ttlcache.NewCache() + c.SetTTL(time.Minute * 15) + Profiles = &profiles{c: c} +} + +func (p *profiles) Get(phone string) (dto.WAProfile, bool) { + item, err := p.c.Get(phone) + if err != nil { + return dto.WAProfile{}, false + } + return item.(dto.WAProfile), true +} + +func (p *profiles) Set(phone string, value dto.WAProfile) { + p.c.Set(phone, value) +} diff --git a/internal/dto/error.go b/internal/dto/error.go new file mode 100644 index 0000000..6f99dba --- /dev/null +++ b/internal/dto/error.go @@ -0,0 +1,5 @@ +package dto + +type APIError struct { + Error string `json:"error"` +} diff --git a/internal/dto/profile.go b/internal/dto/profile.go new file mode 100644 index 0000000..5be67da --- /dev/null +++ b/internal/dto/profile.go @@ -0,0 +1,6 @@ +package dto + +type WAProfile struct { + Name string `json:"name"` + Avatar string `json:"avatar"` +} diff --git a/internal/dto/request.go b/internal/dto/request.go new file mode 100644 index 0000000..1e1038a --- /dev/null +++ b/internal/dto/request.go @@ -0,0 +1,5 @@ +package dto + +type WAProfileRequest struct { + Phone string `url:"phone" validate:"required,e164"` +} diff --git a/internal/log/debug.go b/internal/log/debug.go new file mode 100644 index 0000000..d00880b --- /dev/null +++ b/internal/log/debug.go @@ -0,0 +1,20 @@ +package log + +import ( + "fmt" + "os" +) + +var IsDebug bool + +func init() { + if os.Getenv("DEBUG") == "1" || os.Getenv("DEBUG") == "true" { + IsDebug = true + } +} + +func Debug(a ...any) { + if IsDebug { + fmt.Println(append([]any{"[DEBUG]"}, a...)...) + } +} diff --git a/internal/middleware/profile.go b/internal/middleware/profile.go new file mode 100644 index 0000000..24078b3 --- /dev/null +++ b/internal/middleware/profile.go @@ -0,0 +1,50 @@ +package middleware + +import ( + "github.com/Neur0toxine/wa-profile-api/internal/cache" + "github.com/Neur0toxine/wa-profile-api/internal/dto" + "github.com/Neur0toxine/wa-profile-api/internal/log" + "github.com/Neur0toxine/wa-profile-api/internal/waapi" + "github.com/kataras/iris/v12" +) + +// GetProfileHandler godoc +// +// @Summary Get WhatsApp profile info via phone number. +// @Description Returns profile info. +// @Tags profile +// @Produce json +// @Param phone query string true "Phone number in E.134 format." +// @Success 200 {object} dto.WAProfile +// @Failure 400 {object} dto.APIError +// @Failure 404 {object} dto.APIError +// @Failure 422 {object} dto.APIError +// @Router /profile [get] +func GetProfileHandler(c iris.Context) { + var req dto.WAProfileRequest + if err := c.ReadQuery(&req); err != nil { + c.StopWithJSON(iris.StatusBadRequest, dto.APIError{Error: err.Error()}) + return + } + + if req.Phone[0] == '+' { + req.Phone = req.Phone[1:] + } + + log.Debug("resolving", req.Phone) + if profile, ok := cache.Profiles.Get(req.Phone); ok { + log.Debug("cache hit for", req.Phone) + c.JSON(profile) + return + } + + client := c.Value(waapi.ClientKey).(*waapi.Client) + profile, err := client.ProfileByPhone(req.Phone) + if err != nil { + c.StopWithJSON(iris.StatusBadRequest, dto.APIError{Error: err.Error()}) + return + } + + cache.Profiles.Set(req.Phone, profile) + c.JSON(profile) +} diff --git a/internal/proxy/direct_provider.go b/internal/proxy/direct_provider.go new file mode 100644 index 0000000..ef60d87 --- /dev/null +++ b/internal/proxy/direct_provider.go @@ -0,0 +1,13 @@ +package proxy + +type DirectProvider struct{} + +func (d DirectProvider) Provide() string { + return "" +} + +func (d DirectProvider) Bad(string) {} + +func NewDirectProvider() Provider { + return &DirectProvider{} +} diff --git a/internal/proxy/provider.go b/internal/proxy/provider.go new file mode 100644 index 0000000..cc1be74 --- /dev/null +++ b/internal/proxy/provider.go @@ -0,0 +1,10 @@ +package proxy + +const ProviderKey = "proxy_provider" + +// Provider provides proxy. +type Provider interface { + // Provide proxy func. + Provide() string + Bad(string) +} diff --git a/internal/proxy/random_list_provider.go b/internal/proxy/random_list_provider.go new file mode 100644 index 0000000..e74d94d --- /dev/null +++ b/internal/proxy/random_list_provider.go @@ -0,0 +1,112 @@ +package proxy + +import ( + "context" + "math/rand" + "net" + "runtime" + "sync" + "time" + + "github.com/Neur0toxine/wa-profile-api/internal/log" + "github.com/gocolly/colly" +) + +const proxiesSource = "https://free-proxy-list.net" + +type RandomListProvider struct { + r *rand.Rand + proxies []string + ctx context.Context + cancel func() + lock sync.RWMutex +} + +func NewRandomListProvider() Provider { + ctx, cancel := context.WithCancel(context.Background()) + pr := &RandomListProvider{ + r: rand.New(rand.NewSource(time.Now().UnixNano())), + ctx: ctx, + cancel: cancel, + } + go pr.refreshRegular() + runtime.SetFinalizer(pr, randomListProviderDestructor) + return pr +} + +func randomListProviderDestructor(pr *RandomListProvider) { + pr.cancel() +} + +func (pr *RandomListProvider) Provide() string { + defer pr.lock.RUnlock() + pr.lock.RLock() + if len(pr.proxies) == 0 { + log.Debug("empty proxy list, waiting for 0.5s to populate...") + time.Sleep(time.Millisecond * 500) + if len(pr.proxies) == 0 { + log.Debug("no proxies found, direct will be used.") + return "" + } + } + + proxyAddress := pr.proxies[pr.r.Intn(len(pr.proxies)-1)] + log.Debug("providing proxy", proxyAddress) + return proxyAddress +} + +func (pr *RandomListProvider) Bad(addr string) { + defer pr.lock.Unlock() + pr.lock.Lock() + for i, val := range pr.proxies { + if val == addr { + pr.proxies[i] = pr.proxies[len(pr.proxies)-1] + pr.proxies = pr.proxies[:len(pr.proxies)-1] + break + } + } +} + +func (pr *RandomListProvider) refreshRegular() { + for { + select { + case <-pr.ctx.Done(): + return + default: + pr.refresh() + time.Sleep(time.Hour) + } + } +} + +func (pr *RandomListProvider) refresh() { + log.Debug("preparing to download fresh proxies") + defer pr.lock.Unlock() + pr.lock.Lock() + + proxies := pr.loadProxies() + if len(proxies) > 0 { + pr.proxies = proxies + } + + log.Debug("downloaded", len(proxies), "proxies") +} + +func (pr *RandomListProvider) loadProxies() []string { + proxies := []string{} + c := colly.NewCollector(colly.AllowURLRevisit()) + c.OnRequest(func(r *colly.Request) { + r.Headers.Set("User-Agent", "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/118.0.0.0 Safari/537.36") + log.Debug("proxy crawler: visiting", r.URL) + }) + c.OnHTML("div.table-responsive.fpl-list > table > tbody", func(tbody *colly.HTMLElement) { + tbody.ForEach("tr", func(_ int, el *colly.HTMLElement) { + host, port := el.ChildText("td:nth-child(1)"), el.ChildText("td:nth-child(2)") + if port == "80" || port == "8080" { + proxies = append(proxies, "http://"+net.JoinHostPort(host, port)) + } + }) + }) + c.Visit(proxiesSource) + return proxies +} diff --git a/internal/waapi/client.go b/internal/waapi/client.go new file mode 100644 index 0000000..f9a8909 --- /dev/null +++ b/internal/waapi/client.go @@ -0,0 +1,89 @@ +package waapi + +import ( + "fmt" + "strings" + "sync" + + "github.com/Neur0toxine/wa-profile-api/internal/dto" + "github.com/Neur0toxine/wa-profile-api/internal/log" + "github.com/Neur0toxine/wa-profile-api/internal/proxy" + "github.com/gocolly/colly" +) + +const ( + ClientKey = "waapi_client" + nilImage = "https://static.whatsapp.net/rsrc.php/v3/yR/r/y8-PTBaP90a.png" +) + +type Client struct { + proxy proxy.Provider + pool sync.Pool +} + +func NewClient(proxy proxy.Provider) *Client { + return &Client{ + proxy: proxy, + pool: sync.Pool{ + New: newColly, + }, + } +} + +func (c *Client) ProfileByPhone(phone string) (profile dto.WAProfile, err error) { + cl := c.colly() +RetryProfileByPhone: + proxyAddr := c.proxy.Provide() + if proxyAddr != "" { + _ = cl.SetProxy(proxyAddr) + } + + cl.OnHTML(`meta[property="og:title"]`, func(el *colly.HTMLElement) { + profile.Name = el.Attr("content") + }) + cl.OnHTML(`meta[property="og:image"]`, func(el *colly.HTMLElement) { + profile.Avatar = el.Attr("content") + if profile.Avatar == nilImage { + profile.Name = "" + profile.Avatar = "" + } + }) + cl.OnError(func(r *colly.Response, crawlErr error) { + err = crawlErr + }) + cl.Visit(fmt.Sprintf("https://api.whatsapp.com/send/?phone=%s&text&type=phone_number&app_absent=0", phone)) + + if err != nil { + if proxyAddr != "" && (strings.Contains(err.Error(), "connection reset") || + strings.Contains(err.Error(), "unexpected EOF") || + strings.Contains(err.Error(), "Client.Timeout") || + strings.Contains(err.Error(), "Bad Request") || + strings.Contains(err.Error(), "Permanent Redirect")) { + c.proxy.Bad(proxyAddr) + goto RetryProfileByPhone + } + } + + c.pool.Put(cl) + return +} + +func (c *Client) colly() *colly.Collector { + return c.pool.Get().(*colly.Collector) +} + +func newColly() any { + c := colly.NewCollector(colly.AllowURLRevisit()) + c.OnRequest(func(r *colly.Request) { + r.Headers.Set("User-Agent", "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/118.0.0.0 Safari/537.36") + log.Debug("crawler: visiting", r.URL) + }) + + if log.IsDebug { + c.OnResponse(func(r *colly.Response) { + log.Debug("crawler: got a response", string(r.Body)) + }) + } + + return c +}