fix: support reading GH files above 1MB

github/resource_github_repository_file.go

@@ -1,6 +1,7 @@
 package github
 
 import (
+	"bytes"
 	"context"
 	"errors"
 	"fmt"
@@ -314,9 +315,31 @@ func resourceGithubRepositoryFileRead(d *schema.ResourceData, meta any) error {
 		return nil
 	}
 
-	content, err := fc.GetContent()
-	if err != nil {
-		return err
+	encoding := fc.GetEncoding()
+
+	var content string
+
+	if encoding == "" || encoding == "none" {
+		rawURL := fc.GetURL()
+
+		req, err := client.NewRequest("GET", rawURL, nil)
+		if err != nil {
+			return err
+		}
+
+		req.Header.Set("Accept", "application/vnd.github.raw+json")
+
+		var buf bytes.Buffer
+		if _, err := client.Do(ctx, req, &buf); err != nil {
+			return err
+		}
+
+		content = buf.String()
+	} else {
+		content, err = fc.GetContent()
+		if err != nil {
+			return err
+		}
 	}
 
 	if err = d.Set("content", content); err != nil {

github/resource_github_repository_file_test.go

@@ -403,4 +403,106 @@ func TestAccGithubRepositoryFile(t *testing.T) {
 			testCase(t, organization)
 		})
 	})
+
+	t.Run("handles files larger than 1MB with raw encoding", func(t *testing.T) {
+		randomID := acctest.RandStringFromCharSet(5, acctest.CharSetAlphaNum)
+
+		initialContent := strings.Repeat("A", 1200000)
+		updatedContent := strings.Repeat("B", 1200000)
+
+		initialConfig := fmt.Sprintf(`
+			resource "github_repository" "test" {
+				name                 = "tf-acc-test-large-file-%s"
+				auto_init            = true
+				vulnerability_alerts = true
+			}
+
+			resource "github_repository_file" "test" {
+				repository     = github_repository.test.name
+				branch         = "main"
+				file           = "large-file.txt"
+				content        = %q
+				commit_message = "Add large file (>1MB) to test raw encoding"
+				commit_author  = "Terraform User"
+				commit_email   = "terraform@example.com"
+			}
+		`, randomID, initialContent)
+
+		updatedConfig := fmt.Sprintf(`
+			resource "github_repository" "test" {
+				name                 = "tf-acc-test-large-file-%s"
+				auto_init            = true
+				vulnerability_alerts = true
+			}
+
+			resource "github_repository_file" "test" {
+				repository     = github_repository.test.name
+				branch         = "main"
+				file           = "large-file.txt"
+				content        = %q
+				commit_message = "Update large file (>1MB) to test raw encoding on read"
+				commit_author  = "Terraform User"
+				commit_email   = "terraform@example.com"
+			}
+		`, randomID, updatedContent)
+
+		initialCheck := resource.ComposeTestCheckFunc(
+			resource.TestCheckResourceAttr(
+				"github_repository_file.test", "content",
+				initialContent,
+			),
+			resource.TestCheckResourceAttrSet(
+				"github_repository_file.test", "sha",
+			),
+			resource.TestCheckResourceAttrSet(
+				"github_repository_file.test", "commit_sha",
+			),
+			resource.TestCheckResourceAttr(
+				"github_repository_file.test", "file",
+				"large-file.txt",
+			),
+		)
+
+		updatedCheck := resource.ComposeTestCheckFunc(
+			resource.TestCheckResourceAttr(
+				"github_repository_file.test", "content",
+				updatedContent,
+			),
+			resource.TestCheckResourceAttrSet(
+				"github_repository_file.test", "sha",
+			),
+			resource.TestCheckResourceAttrSet(
+				"github_repository_file.test", "commit_sha",
+			),
+		)
+
+		testCase := func(t *testing.T, mode string) {
+			resource.Test(t, resource.TestCase{
+				PreCheck:  func() { skipUnlessMode(t, mode) },
+				Providers: testAccProviders,
+				Steps: []resource.TestStep{
+					{
+						Config: initialConfig,
+						Check:  initialCheck,
+					},
+					{
+						Config: updatedConfig,
+						Check:  updatedCheck,
+					},
+				},
+			})
+		}
+
+		t.Run("with an anonymous account", func(t *testing.T) {
+			t.Skip("anonymous account not supported for this operation")
+		})
+
+		t.Run("with an individual account", func(t *testing.T) {
+			testCase(t, individual)
+		})
+
+		t.Run("with an organization account", func(t *testing.T) {
+			testCase(t, organization)
+		})
+	})
 }