Upload a file using the GraphQL and GitHub A.P.I. in JavaScript

[catafest-work]

I want to upload a file to my repo using the GraphQL and GitHub A.P.I. in JavaScript.
I search on web and on documentation but I don't find a good way to solve it.
Any idea?

[catafest-work]

I think can be done with createCommitOnBranch but the documentation is lacking..

[david-engelmann]

Here's a past discussion that might provide some clarity. Hope it helps!

[rlnchow]

@catafest-work

• Get the GitHub Oid of the last commit from the branch.

query GetBranch{
    repository (name: "catafest-work", owner: "catafest-work") {
        ref (qualifiedName: "main") {
            target {
                ... on Commit {
                    history(first: 1) {
                        nodes {
                            oid
                        }
                    }
                }
            }
        }
    }
}

{
  "data": {
    "repository": {
      "ref": {
        "target": {
          "history": {
            "nodes": [
              {
                "oid": "0ae81c22379ed54e74f8cdbb118c6cede783bc6a"
              }
            ]
          }
        }
      }
    }
  }
}

• Pass Oid and Contents (base64 encrypted) to the createCommitOnBranch mutation.

mutation ($contents: Base64String!, $oid: GitObjectID!){
  createCommitOnBranch (input: {
    branch : {
      repositoryNameWithOwner: "catafest-work/catafest-work"
      branchName: "main"
      # Replace main with another name to create a new branch from the last commit of the main branch.
     # Or it will push changes to the main branch.
    }
    message: {
      headline: "feat: Commit through Graphql"
    }
    fileChanges: {
      additions: [
        {
          path: "docs/README.md"
          contents: $contents
        }
      ],
      deletions: [
        {
          path: "README.md"
        }
      ]
    }
    expectedHeadOid: $oid
  }) {
    commit {
      commitUrl
    }
  }
}

Returns commit URL.