first version which seems to run

tina/gitea-git-provider.ts

@@ -0,0 +1,123 @@
+import { Base64 } from "js-base64";
+import type { GitProvider } from "@tinacms/datalayer";
+
+export interface GiteaGitProviderOptions {
+  owner: string;
+  repo: string;
+  token: string;
+  branch: string;
+  baseUrl: string;
+  commitMessage?: string;
+  rootPath?: string;
+}
+
+export class GiteaGitProvider implements GitProvider {
+  owner: string;
+  repo: string;
+  branch: string;
+  baseUrl: string;
+  commitMessage: string;
+  rootPath?: string;
+  private token: string;
+
+  constructor(args: GiteaGitProviderOptions) {
+    this.owner = args.owner;
+    this.repo = args.repo;
+    this.branch = args.branch;
+    this.baseUrl = args.baseUrl.replace(/\/$/, "");
+    this.commitMessage = args.commitMessage || "Edited with TinaCMS";
+    this.rootPath = args.rootPath;
+    this.token = args.token;
+  }
+
+  private getApiUrl(path: string): string {
+    return `${this.baseUrl}/api/v1/repos/${this.owner}/${this.repo}/contents/${path}`;
+  }
+
+  private getHeaders(): Record<string, string> {
+    return {
+      Authorization: `token ${this.token}`,
+      "Content-Type": "application/json",
+      Accept: "application/json",
+    };
+  }
+
+  private getKeyWithPath(key: string): string {
+    return this.rootPath ? `${this.rootPath}/${key}` : key;
+  }
+
+  private async getFileSha(
+    keyWithPath: string
+  ): Promise<string | undefined> {
+    try {
+      const url = `${this.getApiUrl(keyWithPath)}?ref=${encodeURIComponent(this.branch)}`;
+      const response = await fetch(url, {
+        method: "GET",
+        headers: this.getHeaders(),
+      });
+      if (!response.ok) {
+        return undefined;
+      }
+      const data = await response.json();
+      return data.sha;
+    } catch {
+      return undefined;
+    }
+  }
+
+  async onPut(key: string, value: string): Promise<void> {
+    const keyWithPath = this.getKeyWithPath(key);
+    const sha = await this.getFileSha(keyWithPath);
+
+    const body: Record<string, unknown> = {
+      message: this.commitMessage,
+      content: Base64.encode(value),
+      branch: this.branch,
+    };
+
+    if (sha) {
+      body.sha = sha;
+    }
+
+    const response = await fetch(this.getApiUrl(keyWithPath), {
+      method: sha ? "PUT" : "POST",
+      headers: this.getHeaders(),
+      body: JSON.stringify(body),
+    });
+
+    if (!response.ok) {
+      const errorText = await response.text();
+      throw new Error(
+        `Failed to save ${keyWithPath}: ${response.status} ${errorText}`
+      );
+    }
+  }
+
+  async onDelete(key: string): Promise<void> {
+    const keyWithPath = this.getKeyWithPath(key);
+    const sha = await this.getFileSha(keyWithPath);
+
+    if (!sha) {
+      throw new Error(
+        `Could not find file ${keyWithPath} in repo ${this.owner}/${this.repo}`
+      );
+    }
+
+    const response = await fetch(this.getApiUrl(keyWithPath), {
+      method: "DELETE",
+      headers: this.getHeaders(),
+      body: JSON.stringify({
+        message: this.commitMessage,
+        branch: this.branch,
+        sha,
+      }),
+    });
+
+    if (!response.ok) {
+      const errorText = await response.text();
+      throw new Error(
+        `Failed to delete ${keyWithPath}: ${response.status} ${errorText}`
+      );
+    }
+  }
+}