// list of owner who can control dapr-bot workflow
// TODO: Read owners from OWNERS file.
const owners = [
    "yaron2",
    "berndverst",
    "artursouza",
    "mukundansundar",
    "halspang",
    "tanvigour",
    "pkedy",
    "amuluyavarote",
    "daixiang0",
    "ItalyPaleAle",
    "jjcollinge",
    "pravinpushkar",
    "shivamkm07",
    "shubham1172",
    "skyao",
    "msfussell",
    "Taction",
    "RyanLettieri",
    "DeepanshuA",
    "yash-nisar",
    "addjuarez",
    "tmacam",
];

const docsIssueBodyTpl = (issueNumber) => `This issue was automatically created by \
[Dapr Bot](https://github.com/dapr/dapr/blob/master/.github/workflows/dapr-bot.yml) because a \"documentation required\" label \
was added to dapr/components-contrib#${issueNumber}. \n\n\
TODO: Add more details as per [this template](.github/ISSUE_TEMPLATE/new-content-needed.md).`;

const newComponentBodyTpl = (issueNumber) => `This issue was automatically created by \
[Dapr Bot](https://github.com/dapr/dapr/blob/master/.github/workflows/dapr-bot.yml) because a \"new component\" label \
was added to dapr/components-contrib#${issueNumber}. \n\n\

Please register the component in [cmd/daprd/components](https://github.com/dapr/dapr/tree/master/cmd/daprd/components), \
similar to the ones in the folder (one file per component).`;

module.exports = async ({ github, context }) => {
    if (context.eventName == "issue_comment" && context.payload.action == "created") {
        await handleIssueCommentCreate({ github, context });
    } else if ((context.eventName == "issues" || context.eventName == "pull_request") && context.payload.action == "labeled") {
        await handleIssueOrPrLabeled({ github, context });
    } else {
        console.log(`[main] event ${context.eventName} not supported, exiting.`);
    }
}

/**
 * Handle issue comment create event.
 */
async function handleIssueCommentCreate({ github, context }) {
    const payload = context.payload;
    const issue = context.issue;
    const username = (context.actor || "").toLowerCase();
    const isFromPulls = !!payload.issue.pull_request;
    const commentBody = payload.comment.body;

    if (!commentBody) {
        console.log("[handleIssueCommentCreate] comment body not found, exiting.");
        return;
    }
    const command = commentBody.split(" ")[0];

    // Commands that can be executed by anyone.
    if (command === "/assign") {
        await cmdAssign(github, issue, username, isFromPulls);
        return;
    }

    // Commands that can only be executed by owners.
    if (owners.map((v) => v.toLowerCase()).indexOf(username) < 0) {
        console.log(`[handleIssueCommentCreate] user ${username} is not an owner, exiting.`);
        return;
    }

    switch (command) {
        case "/ok-to-test":
            await cmdOkToTest(github, issue, isFromPulls);
            break;
        default:
            console.log(`[handleIssueCommentCreate] command ${command} not found, exiting.`);
            break;
    }
}



/**
 * Handle issue or PR labeled event.
 */
async function handleIssueOrPrLabeled({ github, context }) {
    const payload = context.payload;
    const label = payload.label.name;
    const issueNumber = payload.issue.number;

    // This should not run in forks.
    if (context.repo.owner !== "dapr") {
        console.log("[handleIssueOrPrLabeled] not running in dapr repo, exiting.");
        return;
    }

    // Authorization is not required here because it's triggered by an issue label event.
    // Only authorized users can add labels to issues.
    if (label == "documentation required") {
        // Open a new docs issue
        await github.rest.issues.create({
            owner: "dapr",
            repo: "docs",
            title: `New content needed for dapr/components-contrib#${issueNumber}`,
            labels: ["content/missing-information", "created-by/dapr-bot"],
            body: docsIssueBodyTpl(issueNumber),
        });
    } else if (label == "new component") {
        // Open a new dapr issue
        await github.rest.issues.create({
            owner: "dapr",
            repo: "dapr",
            title: `Component registration for dapr/components-contrib#${issueNumber}`,
            labels: ["area/components", "created-by/dapr-bot"],
            body: newComponentBodyTpl(issueNumber),
        });
    } else {
        console.log(`[handleIssueOrPrLabeled] label ${label} not supported, exiting.`);
    }
}

/**
 * Assign the issue to the user who commented.
 * @param {*} github GitHub object reference
 * @param {*} issue GitHub issue object
 * @param {*} username GitHub user who commented
 * @param {boolean} isFromPulls is the workflow triggered by a pull request?
 */
async function cmdAssign(github, issue, username, isFromPulls) {
    if (isFromPulls) {
        console.log("[cmdAssign] pull requests unsupported, skipping command execution.");
        return;
    } else if (issue.assignees && issue.assignees.length !== 0) {
        console.log("[cmdAssign] issue already has assignees, skipping command execution.");
        return;
    }

    await github.rest.issues.addAssignees({
        owner: issue.owner,
        repo: issue.repo,
        issue_number: issue.number,
        assignees: [username],
    });
}


/**
 * Trigger e2e test for the pull request.
 * @param {*} github GitHub object reference
 * @param {*} issue GitHub issue object
 * @param {boolean} isFromPulls is the workflow triggered by a pull request?
 */
async function cmdOkToTest(github, issue, isFromPulls) {
    if (!isFromPulls) {
        console.log("[cmdOkToTest] only pull requests supported, skipping command execution.");
        return;
    }

    // Get pull request
    const pull = await github.rest.pulls.get({
        owner: issue.owner,
        repo: issue.repo,
        pull_number: issue.number
    });

    if (pull && pull.data) {
        // Get commit id and repo from pull head
        const testPayload = {
            pull_head_ref: pull.data.head.sha,
            pull_head_repo: pull.data.head.repo.full_name,
            command: "ok-to-test",
            issue: issue,
        };

        // Fire repository_dispatch event to trigger certification test
        await github.rest.repos.createDispatchEvent({
            owner: issue.owner,
            repo: issue.repo,
            event_type: "certification-test",
            client_payload: testPayload,
        });

        // Fire repository_dispatch event to trigger conformance test
        await github.rest.repos.createDispatchEvent({
            owner: issue.owner,
            repo: issue.repo,
            event_type: "conformance-test",
            client_payload: testPayload,
        });

        // Fire repository_dispatch event to trigger unit tests for other architectures and OS
        await github.rest.repos.createDispatchEvent({
            owner: issue.owner,
            repo: issue.repo,
            event_type: "build-all",
            client_payload: testPayload,
        });

        console.log(`[cmdOkToTest] triggered certification and conformance tests for ${JSON.stringify(testPayload)}`);
    }
}