init

internal/gitadapters/base.go

@@ -0,0 +1,31 @@
+package gitadapters
+
+import (
+	"fmt"
+	"io"
+	"net/http"
+	"net/url"
+)
+
+type baseHTTP struct {
+	baseURL     string
+	bearerToken string
+}
+
+func (b *baseHTTP) createRequest(method string, body io.Reader, path ...string) (r *http.Request, err error) {
+	target, err := url.JoinPath(b.baseURL, path...)
+	if err != nil {
+		err = fmt.Errorf("can not parse path: %w", err)
+		return
+	}
+	req, err := http.NewRequest(method, target, body)
+	if err != nil {
+		return nil, err
+	}
+
+	if b.bearerToken != "" {
+		req.Header.Set("Authorization", "Bearer "+b.bearerToken)
+	}
+
+	return req, nil
+}

internal/gitadapters/bitbucket.go

@@ -0,0 +1,38 @@
+package gitadapters
+
+import (
+	"fmt"
+	"io"
+	"net/http"
+)
+
+type BitbucketAdapter struct {
+	baseHTTP
+}
+
+func NewBitbucket(baseURL string, bearerToken string) *BitbucketAdapter {
+	return &BitbucketAdapter{
+		baseHTTP{
+			baseURL:     baseURL,
+			bearerToken: bearerToken,
+		},
+	}
+}
+
+func (b *BitbucketAdapter) GetDiff(projectKey, repositorySlug string, pullRequestID int) (diff io.Reader, err error) {
+	r, err := b.createRequest(
+		http.MethodGet,
+		nil,
+		"/rest/api/1.0/projects/", projectKey, "repos", repositorySlug, "pull-requests", fmt.Sprintf("%d.diff", pullRequestID),
+	)
+	if err != nil {
+		return
+	}
+
+	response, err := http.DefaultClient.Do(r)
+	if err != nil {
+		return
+	}
+	diff = response.Body
+	return
+}

internal/gitadapters/resource.go

@@ -0,0 +1 @@
+package gitadapters