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

pkg/core/notifier/providers/pushover/pushover.go

@@ -0,0 +1,71 @@
+package pushover
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"log/slog"
+
+	"github.com/go-resty/resty/v2"
+
+	"github.com/usual2970/certimate/pkg/core"
+)
+
+type NotifierProviderConfig struct {
+	// Pushover API Token。
+	Token string `json:"token"`
+	// 用户或分组标识。
+	User string `json:"user"`
+}
+
+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()
+
+	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) {
+	// REF: https://pushover.net/api
+	req := n.httpClient.R().
+		SetContext(ctx).
+		SetHeader("Content-Type", "application/json").
+		SetHeader("User-Agent", "certimate").
+		SetBody(map[string]any{
+			"title":   subject,
+			"message": message,
+			"token":   n.config.Token,
+			"user":    n.config.User,
+		})
+	resp, err := req.Post("https://api.pushover.net/1/messages.json")
+	if err != nil {
+		return nil, fmt.Errorf("pushover api error: failed to send request: %w", err)
+	} else if resp.IsError() {
+		return nil, fmt.Errorf("pushover api error: unexpected status code: %d, resp: %s", resp.StatusCode(), resp.String())
+	}
+
+	return &core.NotifyResult{}, nil
+}