Add Omnivore integration

internal/integration/omnivore/omnivore.go

@@ -0,0 +1,101 @@
+// SPDX-FileCopyrightText: Copyright The Miniflux Authors. All rights reserved.
+// SPDX-License-Identifier: Apache-2.0
+
+package omnivore // import "miniflux.app/v2/internal/integration/omnivore"
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"time"
+
+	"github.com/google/uuid"
+
+	"miniflux.app/v2/internal/version"
+)
+
+const defaultClientTimeout = 10 * time.Second
+
+const defaultApiEndpoint = "https://api-prod.omnivore.app/api/graphql"
+
+var mutation = `
+mutation SaveUrl($input: SaveUrlInput!) {
+  saveUrl(input: $input) {
+    ... on SaveSuccess {
+      url
+      clientRequestId
+    }
+    ... on SaveError {
+      errorCodes
+      message
+    }
+  }
+}
+`
+
+type SaveUrlInput struct {
+	ClientRequestId string `json:"clientRequestId"`
+	Source          string `json:"source"`
+	Url             string `json:"url"`
+}
+
+type Client interface {
+	SaveUrl(url string) error
+}
+
+type client struct {
+	wrapped     *http.Client
+	apiEndpoint string
+	apiToken    string
+}
+
+func NewClient(apiToken string, apiEndpoint string) Client {
+	if apiEndpoint == "" {
+		apiEndpoint = defaultApiEndpoint
+	}
+
+	return &client{wrapped: &http.Client{Timeout: defaultClientTimeout}, apiEndpoint: apiEndpoint, apiToken: apiToken}
+}
+
+func (c *client) SaveUrl(url string) error {
+	var payload = map[string]interface{}{
+		"query": mutation,
+		"variables": map[string]interface{}{
+			"input": map[string]interface{}{
+				"clientRequestId": uuid.New().String(),
+				"source":          "api",
+				"url":             url,
+			},
+		},
+	}
+	b, err := json.Marshal(payload)
+	if err != nil {
+		return err
+	}
+	req, err := http.NewRequest(http.MethodPost, c.apiEndpoint, bytes.NewReader(b))
+	if err != nil {
+		return err
+	}
+
+	req.Header.Set("Authorization", c.apiToken)
+	req.Header.Set("Content-Type", "application/json")
+	req.Header.Set("User-Agent", "Miniflux/"+version.Version)
+
+	resp, err := c.wrapped.Do(req)
+	if err != nil {
+		return err
+	}
+
+	if resp.StatusCode >= 400 {
+		defer resp.Body.Close()
+		b, err = io.ReadAll(resp.Body)
+		if err != nil {
+			return err
+		}
+		return fmt.Errorf("omnivore: failed to save URL: status=%d %s", resp.StatusCode, string(b))
+	}
+
+	return nil
+}