index.js

const core = require(`@actions/core`);
const github = require(`@actions/github`);
const azdev = require('azure-devops-node-api');
const showdown = require('showdown');

const debug = false; // debug mode for testing...always set to false before doing a commit
const testPayload = []; // used for debugging, cut and paste payload

main();

async function main() {
  if (debug) console.log('WARNING! You are in debug mode');
  
  try {
    const context = github.context;
    const env = process.env;

    let vm = [];

    if (debug) {
      // manually set when debugging
      env.ado_organization = "{organization}";
      env.ado_token = "{azure devops personal access token}";
      env.github_token = "{github token}";
      env.ado_project = "{project name}";
      env.ado_wit = "User Story";
      env.ado_close_state = "Closed";
      env.ado_active_state = "Active";
      env.ado_new_state = "New";
      env.log_level = 100;

      console.log("Set values from test payload");
      vm = getValuesFromPayload(testPayload, env);
    } else {
      console.log("Set values from payload & env");
      vm = getValuesFromPayload(github.context.payload, env);
    }    

    // if the sender in the azure-boards bot, then exit code
    // nothing needs to be done
    if (vm.sender_login === "azure-boards[bot]") {
      console.log(`azure-boards[bot] sender, exiting action`);
      return;
    }

    // todo: validate we have all the right inputs

    // go check to see if work item already exists in azure devops or not
    // based on the title and tags
    console.log("Check to see if work item already exists");
    let workItem = await find(vm);
    let issue = "";

    // if workItem == -1 then we have an error during find
    if (workItem === -1) {
      console.log("Work item value is -1, exiting action");
      core.setFailed();
      return;
    }

    // if a work item was not found, go create one
    if (workItem === null) {
      console.log("No work item found, creating work item from issue");
      workItem = await create(vm);

      // if workItem == -1 then we have an error during create
      if (workItem === -1) {
        console.log("Work item value is -1, exiting action");
        core.setFailed();
        return;
      }

      if (vm.env.logLevel >= 300) {
        console.log("Print full work item object:");
        console.log(workItem);
      }      

      // link the issue to the work item via AB# syntax with AzureBoards+GitHub App
      console.log("Updating issue body text with AB# syntax");
      
      if (vm.env.ghToken === "") {
        console.log("Warning: Missing GitHub token and unable to update issue with AB# syntax.")
      }
      
      issue = vm.env.ghToken != "" ? await updateIssueBody(vm, workItem) : "";

    } else {
      console.log(`Existing work item found: ${workItem.id}`);
    }

    if (vm.env.logLevel >= 200)
      console.log(`Starting switch statement for action '${vm.action}'`);

    // create right patch document depending on the action tied to the issue
    // update the work item
    switch (vm.action) {
      case "opened":
        workItem === null ? await create(vm) : "";
        break;
      case "edited":
        workItem != null ? await update(vm, workItem) : "";
        break;
      case "created": // adding a comment to an issue
        workItem != null ? await comment(vm, workItem) : "";
        break;
      case "closed":
        workItem != null ? await close(vm, workItem) : "";
        break;
      case "reopened":
        workItem != null ? await reopened(vm, workItem) : "";
        break;
      case "assigned":
        console.log("assigned action is not yet implemented");
        break;
      case "labeled":
        workItem != null ? await label(vm, workItem) : "";
        break;
      case "unlabeled":
        workItem != null ? await unlabel(vm, workItem) : "";
        break;
      case "deleted":
        console.log("deleted action is not yet implemented");
        break;
      case "transferred":
        console.log("transferred action is not yet implemented");
        break;
      default:
        console.log(`unhandled action: ${vm.action}`);
    }

    // set output message
    if (workItem != null || workItem != undefined) {
      console.log(`Work item successfully created or updated: ${workItem.id}`);      
    }
    
  } catch (error) {
    console.log("Error in catch statement:");
    console.log(error);
    core.setFailed(error);
  }
}

// create Work Item via https://docs.microsoft.com/en-us/rest/api/azure/devops/
async function create(vm) {
  if (vm.env.logLevel >= 200) console.log(`Starting 'create' method...`);
  
  var converter = new showdown.Converter({tables: 'true'});
  var html = converter.makeHtml(vm.body);
  
  converter = null;

  let patchDocument = [
    {
      op: "add",
      path: "/fields/System.Title",
      value: vm.title + ` (GitHub Issue #${vm.number})`
    },
    {
      op: "add",
      path: "/fields/System.Description",
      value: html
    },
    {
      op: "add",
      path: "/fields/Microsoft.VSTS.TCM.ReproSteps",
      value: html
    },
    {
      op: "add",
      path: "/fields/System.Tags",
      value: "GitHub Issue; " + vm.repo_name
    },
    {
      op: "add",
      path: "/relations/-",
      value: {
        rel: "Hyperlink",
        url: vm.url
      },
    },
    {
      op: "add",
      path: "/fields/System.History",
      value: `GitHub <a href="${vm.url}" target="_new">issue #${vm.number}</a> created in <a href="${vm.repo_url}" target="_new">${vm.repo_fullname}</a> by ${vm.user}`
    },
    {
      op: "add",
      path: "/fields/Microsoft.VSTS.Common.StackRank",
      value: 1
    },
    {
      op: "add",
      path: "/fields/Microsoft.VSTS.Common.BacklogPriority",
      value: 1
    } 
  ];

  // if area path is not empty, set it
  if (vm.env.areaPath != "") {
    patchDocument.push({
      op: "add",
      path: "/fields/System.AreaPath",
      value: vm.env.areaPath
    });
  }

  // if iteration path is not empty, set it
  if (vm.env.iterationPath != "") {
    patchDocument.push({
      op: "add",
      path: "/fields/System.IterationPath",
      value: vm.env.iterationPath
    });
  }

  // if the bypassrules are on, then use the issue.sender.user.name value for the person
  // who created the issue
  if (vm.env.bypassRules) {
    patchDocument.push({
      op: "add",
      path: "/fields/System.CreatedBy",
      value: vm.user
    });
  }

  // verbose logging
  if (vm.env.logLevel >= 300) {
    console.log("Print full patch object:");
    console.log(patchDocument);
  }

  let authHandler = azdev.getHandlerFromToken(vm.env.adoToken);
  let connection = new azdev.WebApi(vm.env.orgUrl, authHandler);
  let client = await connection.getWorkItemTrackingApi();
  let workItemSaveResult = null;

  try {
    workItemSaveResult = await client.createWorkItem(
      (customHeaders = []),
      (document = patchDocument),
      (project = vm.env.project),
      (type = vm.env.wit),
      (validateOnly = false),
      (bypassRules = vm.env.bypassRules)
    );

    // if result is null, save did not complete correctly
    if (workItemSaveResult == null) {
      workItemSaveResult = -1;

      console.log("Error: creatWorkItem failed");
      console.log(`WIT may not be correct: ${vm.env.wit}`);
      core.setFailed();
    }

    return workItemSaveResult;
  } catch (error) {
    workItemSaveResult = -1;

    console.log("Error: creatWorkItem failed");
    console.log(error);
    core.setFailed(error);
  }

  return workItemSaveResult;
}

// update existing working item
async function update(vm, workItem) {
  if (vm.env.logLevel >= 200) console.log(`Starting 'update' method...`);

  var body = vm.body.replace(`AB#${workItem.id}`, '').trim();
  var converter = new showdown.Converter({tables: 'true'});
  var html = converter.makeHtml(body);  
  converter = null;
  let patchDocument = [];

  if (
    workItem.fields["System.Title"] !=
    `${vm.title} (GitHub Issue #${vm.number})`
  ) {
    patchDocument.push({
      op: "add",
      path: "/fields/System.Title",
      value: vm.title + " (GitHub Issue #" + vm.number + ")",
    });
  }

  if (workItem.fields["System.Description"] != html || workItem.fields["Microsoft.VSTS.TCM.ReproSteps"] != html ) {
    patchDocument.push(
      {
        op: "add",
        path: "/fields/System.Description",
        value: html,
      },
      {
        op: "add",
        path: "/fields/Microsoft.VSTS.TCM.ReproSteps",
        value: html,
      }
    );
  }

  var commentEdited = false;
  if (vm.comment_text != "") {
    var comment_converter = new showdown.Converter();
    var comment_html = comment_converter.makeHtml(vm.comment_text);  
    comment_converter = null;

    patchDocument.push({
      op: "add",
      path: "/fields/System.History",
      value: `<a href="${vm.comment_url}" target="_new">GitHub issue and comment edited</a> by ${vm.user}</br></br>${comment_html}`,
    });
    commentEdited = true;
  }
  

  // verbose logging
  if (vm.env.logLevel >= 300) {
    console.log("Print full patch object:");
    console.log(patchDocument);
  }

  if (patchDocument.length > 0) {
    if (!commentEdited){
      patchDocument.push({
        op: "add",
        path: "/fields/System.History",
        value: "GitHub issue updated by " + vm.user,
      });
    }

    return await updateWorkItem(patchDocument, workItem.id, vm.env);
  } else {
    return null;
  }
}

// add comment to an existing work item
async function comment(vm, workItem) {
  if (vm.env.logLevel >= 200) console.log(`Starting 'comment' method...`);

  var converter = new showdown.Converter({tables: 'true'});
  var html = converter.makeHtml(vm.comment_text);
  
  converter = null;

  let patchDocument = [];

  if (vm.comment_text != "") {
    patchDocument.push({
      op: "add",
      path: "/fields/System.History",
      value: `<a href="${vm.comment_url}" target="_new">GitHub issue comment added</a> by ${vm.user}</br></br>${html}`,
    });
  }

  // verbose logging
  if (vm.env.logLevel >= 300) {
    console.log("Print full patch object:");
    console.log(patchDocument);
  }

  if (patchDocument.length > 0) {
    return await updateWorkItem(patchDocument, workItem.id, vm.env);
  } else {
    return null;
  }
}

// close work item
async function close(vm, workItem) {
  if (vm.env.logLevel >= 200) console.log(`Starting 'close' method...`);

  let patchDocument = [];

  patchDocument.push({
    op: "add",
    path: "/fields/System.State",
    value: vm.env.closedState,
  });

  if (vm.closed_at != "") {
    patchDocument.push({
      op: "add",
      path: "/fields/System.History",
      value: `GitHub <a href="${vm.url}" target="_new">issue #${vm.number}</a> closed by ${vm.user}`,
    });
  }

  // verbose logging
  if (vm.env.logLevel >= 300) {
    console.log("Print full patch object:");
    console.log(patchDocument);
  }

  if (patchDocument.length > 0) {
    return await updateWorkItem(patchDocument, workItem.id, vm.env);
  } else {
    return null;
  }
}

// reopen existing work item
async function reopened(vm, workItem) {
  if (vm.env.logLevel >= 200) console.log(`Starting 'reopened' method...`);

  let patchDocument = [];

  patchDocument.push({
    op: "add",
    path: "/fields/System.State",
    value: vm.env.activeState,
  });

  patchDocument.push({
    op: "add",
    path: "/fields/System.History",
    value: `GitHub issue reopened by ${vm.user}`,
  });

  // verbose logging
  if (vm.env.logLevel >= 300) {
    console.log("Print full patch object:");
    console.log(patchDocument);
  }

  if (patchDocument.length > 0) {
    return await updateWorkItem(patchDocument, workItem.id, vm.env);
  } else {
    return null;
  }
}

// add new label to existing work item
async function label(vm, workItem) {
  if (vm.env.logLevel >= 200) console.log(`Starting 'label' method...`);

  let patchDocument = [];

  if (!workItem.fields["System.Tags"].includes(vm.label)) {
    patchDocument.push({
      op: "add",
      path: "/fields/System.Tags",
      value: workItem.fields["System.Tags"] + ", " + vm.label.replace(/\p{Emoji}/gu, ''),
    });
  }

  // verbose logging
  if (vm.env.logLevel >= 300) {
    console.log("Print full patch object:");
    console.log(patchDocument);
  }

  if (patchDocument.length > 0) {
    return await updateWorkItem(patchDocument, workItem.id, vm.env);
  } else {
    return null;
  }
}

async function unlabel(vm, workItem) {
  if (vm.env.logLevel >= 200) console.log(`Starting 'unlabel' method...`);

  let patchDocument = [];

  if (workItem.fields["System.Tags"].includes(vm.label)) {
    var str = workItem.fields["System.Tags"];
    var res = str.replace(vm.label + "; ", "");

    patchDocument.push({
      op: "add",
      path: "/fields/System.Tags",
      value: res,
    });
  }

  // verbose logging
  if (vm.env.logLevel >= 300) {
    console.log("Print full patch object:");
    console.log(patchDocument);
  }

  if (patchDocument.length > 0) {
    return await updateWorkItem(patchDocument, workItem.id, vm.env);
  } else {
    return null;
  }
}

// find work item to see if it already exists
async function find(vm) {
  if (vm.env.logLevel >= 200) console.log(`Starting 'find' method...`);

  let authHandler = azdev.getHandlerFromToken(vm.env.adoToken);
  let connection = new azdev.WebApi(vm.env.orgUrl, authHandler);
  let client = null;
  let workItem = null;
  let queryResult = null;

  try {
    client = await connection.getWorkItemTrackingApi();
  } catch (error) {
    console.log("Error: Connecting to organization. Check the spelling of the organization name and ensure your token is scoped correctly.");
    core.setFailed(error);
    return -1;
  }

  let teamContext = { project: vm.env.project };

  let wiql = {
    query:
      "SELECT [System.Id], [System.WorkItemType], [System.Description], [System.Title], [System.AssignedTo], [System.State], [System.Tags] FROM workitems WHERE [System.TeamProject] = @project AND [System.Title] CONTAINS '(GitHub Issue #" +
      vm.number +
      ")' AND [System.Tags] CONTAINS 'GitHub Issue' AND [System.Tags] CONTAINS '" +
      vm.repository +
      "'",
  };

  // verbose logging
  if (vm.env.logLevel >= 300) {
    console.log("Print full WIQL statement:");
    console.log(wiql);
  }

  try {
    queryResult = await client.queryByWiql(wiql, teamContext);

    // verbose logging
    if (vm.env.logLevel >= 300) {
      console.log("Print query results:");
      console.log(queryResult);
    }

    // if query results = null then i think we have issue with the project name
    if (queryResult == null) {
      console.log("Error: Project name appears to be invalid");
      core.setFailed("Error: Project name appears to be invalid");
      return -1;
    }
  } catch (error) {
    console.log("Error: queryByWiql failure");
    console.log(error);
    core.setFailed(error);
    return -1;
  }

  workItem = queryResult.workItems.length > 0 ? queryResult.workItems[0] : null;

  // verbose logging
  if (vm.env.logLevel >= 300) {
    console.log("Print work item result:");
    console.log(workItem);
  }

  if (workItem != null) {
    try {
      var result = await client.getWorkItem(workItem.id, null, null, 4);
      return result;
    } catch (error) {
      console.log("Error: getWorkItem failure");
      core.setFailed(error);
      return -1;
    }
  } else {
    return null;
  }
}

// standard updateWorkItem call used for all updates
async function updateWorkItem(patchDocument, id, env) {
  if (env.logLevel >= 200) console.log(`Starting 'updateWorkItem' method...`);

  let authHandler = azdev.getHandlerFromToken(env.adoToken);
  let connection = new azdev.WebApi(env.orgUrl, authHandler);
  let client = await connection.getWorkItemTrackingApi();
  let workItemSaveResult = null;

  try {
    workItemSaveResult = await client.updateWorkItem(
      (customHeaders = []),
      (document = patchDocument),
      (id = id),
      (project = env.project),
      (validateOnly = false),
      (bypassRules = env.bypassRules)
    );

    // verbose logging
    if (env.logLevel >= 300) {
      console.log("Print work item save result:");
      console.log(workItemSaveResult);
    }

    return workItemSaveResult;
  } catch (error) {
    console.log("Error: updateWorkItem failed");
    console.log(patchDocument);
    console.log(error);
    core.setFailed(error.toString());
  }
}

// update the GH issue body to include the AB# so that we link the Work Item to the Issue
// this should only get called when the issue is created
async function updateIssueBody(vm, workItem) {
  if (vm.env.logLevel >= 200) console.log(`Starting 'updateIssueBody' method...`);

  var n = vm.body.includes("AB#" + workItem.id.toString());  

  if (!n) {
    const octokit = new github.GitHub(vm.env.ghToken);
    vm.body = vm.body + "\r\n\r\nAB#" + workItem.id.toString();

    var result = await octokit.issues.update({
      owner: vm.owner,
      repo: vm.repository,
      issue_number: vm.number,
      body: vm.body,
    });

    // verbose logging
    if (vm.env.logLevel >= 300) {
      console.log("Print github issue update result:");
      console.log(result);
    }

    return result;
  }

  return null;
}

// get object values from the payload that will be used for logic, updates, finds, and creates
function getValuesFromPayload(payload, env) {
  // prettier-ignore
  var vm = {
		action: payload.action != undefined ? payload.action : "",
		url: payload.issue.html_url != undefined ? payload.issue.html_url : "",
		number: payload.issue.number != undefined ? payload.issue.number : -1,
		title: payload.issue.title != undefined ? payload.issue.title : "",
		state: payload.issue.state != undefined ? payload.issue.state : "",
		user: payload.issue.user.login != undefined ? payload.issue.user.login : "",
		body: payload.issue.body != undefined ? payload.issue.body : "",
		repo_fullname: payload.repository.full_name != undefined ? payload.repository.full_name : "",
		repo_name: payload.repository.name != undefined ? payload.repository.name : "",
		repo_url: payload.repository.html_url != undefined ? payload.repository.html_url : "",
		closed_at: payload.issue.closed_at != undefined ? payload.issue.closed_at : null,
		owner: payload.repository.owner != undefined ? payload.repository.owner.login : "",
		sender_login: payload.sender.login != undefined ? payload.sender.login : '',
		label: "",
		comment_text: "",
		comment_url: "",
		organization: "",
		repository: "",
		env: {
			organization: env.ado_organization != undefined ? env.ado_organization : "",
			orgUrl: env.ado_organization != undefined ? "https://dev.azure.com/" + env.ado_organization : "",
			adoToken: env.ado_token != undefined ? env.ado_token : "",
			ghToken: env.github_token != undefined ? env.github_token : "",
			project: env.ado_project != undefined ? env.ado_project : "",
			areaPath: env.ado_area_path != undefined ? env.ado_area_path : "",
			iterationPath: env.ado_iteration_path != undefined ? env.ado_iteration_path : "",
			wit: env.ado_wit != undefined ? env.ado_wit : "Issue",
			closedState: env.ado_close_state != undefined ? env.ado_close_state : "Closed",
			newState: env.ado_new_state != undefined ? env.ado_new_state : "New",
			activeState: env.ado_active_state != undefined ? env.ado_active_state : "Active",
			bypassRules: env.ado_bypassrules != undefined ? env.ado_bypassrules : false,
      logLevel: env.log_level != undefined ? env.log_level : 100
		}
	};

  // label is not always part of the payload
  if (payload.label != undefined) {
    vm.label = payload.label.name != undefined ? payload.label.name : "";
  }

  // comments are not always part of the payload
  // prettier-ignore
  if (payload.comment != undefined) {
		vm.comment_text = payload.comment.body != undefined ? payload.comment.body : "";
		vm.comment_url = payload.comment.html_url != undefined ? payload.comment.html_url : "";
	}

  // split repo full name to get the org and repository names
  if (vm.repo_fullname != "") {
    var split = payload.repository.full_name.split("/");
    vm.organization = split[0] != undefined ? split[0] : "";
    vm.repository = split[1] != undefined ? split[1] : "";
  }
  
  // verbose logging
  if (vm.env.logLevel >= 300) {
    console.log("Print vm:");
    console.log(vm);
  }

  return vm;
}