chore: move '/internal/pkg' to '/pkg'

pkg/core/notifier/providers/webhook/webhook.go

@@ -0,0 +1,185 @@
+package webhook
+
+import (
+	"context"
+	"crypto/tls"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"log/slog"
+	"net/http"
+	"net/url"
+	"strings"
+	"time"
+
+	"github.com/go-resty/resty/v2"
+
+	"github.com/usual2970/certimate/pkg/core"
+)
+
+type NotifierProviderConfig struct {
+	// Webhook URL。
+	WebhookUrl string `json:"webhookUrl"`
+	// Webhook 回调数据（application/json 或 application/x-www-form-urlencoded 格式）。
+	WebhookData string `json:"webhookData,omitempty"`
+	// 请求谓词。
+	// 零值时默认值 "POST"。
+	Method string `json:"method,omitempty"`
+	// 请求标头。
+	Headers map[string]string `json:"headers,omitempty"`
+	// 是否允许不安全的连接。
+	AllowInsecureConnections bool `json:"allowInsecureConnections,omitempty"`
+}
+
+type NotifierProvider struct {
+	config     *NotifierProviderConfig
+	logger     *slog.Logger
+	httpClient *resty.Client
+}
+
+var _ core.Notifier = (*NotifierProvider)(nil)
+
+func NewNotifierProvider(config *NotifierProviderConfig) (*NotifierProvider, error) {
+	if config == nil {
+		return nil, errors.New("the configuration of the notifier provider is nil")
+	}
+
+	client := resty.New().
+		SetTimeout(30 * time.Second).
+		SetRetryCount(3).
+		SetRetryWaitTime(5 * time.Second)
+	if config.AllowInsecureConnections {
+		client.SetTLSClientConfig(&tls.Config{InsecureSkipVerify: true})
+	}
+
+	return &NotifierProvider{
+		config:     config,
+		logger:     slog.Default(),
+		httpClient: client,
+	}, nil
+}
+
+func (n *NotifierProvider) SetLogger(logger *slog.Logger) {
+	if logger == nil {
+		n.logger = slog.New(slog.DiscardHandler)
+	} else {
+		n.logger = logger
+	}
+}
+
+func (n *NotifierProvider) Notify(ctx context.Context, subject string, message string) (*core.NotifyResult, error) {
+	// 处理 Webhook URL
+	webhookUrl, err := url.Parse(n.config.WebhookUrl)
+	if err != nil {
+		return nil, fmt.Errorf("failed to parse webhook url: %w", err)
+	} else if webhookUrl.Scheme != "http" && webhookUrl.Scheme != "https" {
+		return nil, fmt.Errorf("unsupported webhook url scheme '%s'", webhookUrl.Scheme)
+	}
+
+	// 处理 Webhook 请求谓词
+	webhookMethod := strings.ToUpper(n.config.Method)
+	if webhookMethod == "" {
+		webhookMethod = http.MethodPost
+	} else if webhookMethod != http.MethodGet &&
+		webhookMethod != http.MethodPost &&
+		webhookMethod != http.MethodPut &&
+		webhookMethod != http.MethodPatch &&
+		webhookMethod != http.MethodDelete {
+		return nil, fmt.Errorf("unsupported webhook request method '%s'", webhookMethod)
+	}
+
+	// 处理 Webhook 请求标头
+	webhookHeaders := make(http.Header)
+	for k, v := range n.config.Headers {
+		webhookHeaders.Set(k, v)
+	}
+
+	// 处理 Webhook 请求内容类型
+	const CONTENT_TYPE_JSON = "application/json"
+	const CONTENT_TYPE_FORM = "application/x-www-form-urlencoded"
+	const CONTENT_TYPE_MULTIPART = "multipart/form-data"
+	webhookContentType := webhookHeaders.Get("Content-Type")
+	if webhookContentType == "" {
+		webhookContentType = CONTENT_TYPE_JSON
+		webhookHeaders.Set("Content-Type", CONTENT_TYPE_JSON)
+	} else if strings.HasPrefix(webhookContentType, CONTENT_TYPE_JSON) &&
+		strings.HasPrefix(webhookContentType, CONTENT_TYPE_FORM) &&
+		strings.HasPrefix(webhookContentType, CONTENT_TYPE_MULTIPART) {
+		return nil, fmt.Errorf("unsupported webhook content type '%s'", webhookContentType)
+	}
+
+	// 处理 Webhook 请求数据
+	var webhookData interface{}
+	if n.config.WebhookData == "" {
+		webhookData = map[string]string{
+			"subject": subject,
+			"message": message,
+		}
+	} else {
+		err = json.Unmarshal([]byte(n.config.WebhookData), &webhookData)
+		if err != nil {
+			return nil, fmt.Errorf("failed to unmarshal webhook data: %w", err)
+		}
+
+		replaceJsonValueRecursively(webhookData, "${SUBJECT}", subject)
+		replaceJsonValueRecursively(webhookData, "${MESSAGE}", message)
+
+		if webhookMethod == http.MethodGet || webhookContentType == CONTENT_TYPE_FORM || webhookContentType == CONTENT_TYPE_MULTIPART {
+			temp := make(map[string]string)
+			jsonb, err := json.Marshal(webhookData)
+			if err != nil {
+				return nil, fmt.Errorf("failed to unmarshal webhook data: %w", err)
+			} else if err := json.Unmarshal(jsonb, &temp); err != nil {
+				return nil, fmt.Errorf("failed to unmarshal webhook data: %w", err)
+			} else {
+				webhookData = temp
+			}
+		}
+	}
+
+	// 生成请求
+	// 其中 GET 请求需转换为查询参数
+	req := n.httpClient.R().SetContext(ctx).SetHeaderMultiValues(webhookHeaders)
+	req.URL = webhookUrl.String()
+	req.Method = webhookMethod
+	if webhookMethod == http.MethodGet {
+		req.SetQueryParams(webhookData.(map[string]string))
+	} else {
+		switch webhookContentType {
+		case CONTENT_TYPE_JSON:
+			req.SetBody(webhookData)
+		case CONTENT_TYPE_FORM:
+			req.SetFormData(webhookData.(map[string]string))
+		case CONTENT_TYPE_MULTIPART:
+			req.SetMultipartFormData(webhookData.(map[string]string))
+		}
+	}
+
+	// 发送请求
+	resp, err := req.Send()
+	if err != nil {
+		return nil, fmt.Errorf("webhook error: failed to send request: %w", err)
+	} else if resp.IsError() {
+		return nil, fmt.Errorf("webhook error: unexpected status code: %d, resp: %s", resp.StatusCode(), resp.String())
+	}
+
+	n.logger.Debug("webhook responded", slog.String("response", resp.String()))
+
+	return &core.NotifyResult{}, nil
+}
+
+func replaceJsonValueRecursively(data interface{}, oldStr, newStr string) interface{} {
+	switch v := data.(type) {
+	case map[string]any:
+		for k, val := range v {
+			v[k] = replaceJsonValueRecursively(val, oldStr, newStr)
+		}
+	case []any:
+		for i, val := range v {
+			v[i] = replaceJsonValueRecursively(val, oldStr, newStr)
+		}
+	case string:
+		return strings.ReplaceAll(v, oldStr, newStr)
+	}
+	return data
+}