import fetch from 'node-fetch';

function buildAuthHeader(config) {
    const jira = config.jiraCloud;

    if (jira.authType === 'bearer') {
        return `Bearer ${jira.token}`;
    }

    return `Basic ${Buffer.from(`${jira.email}:${jira.token}`).toString('base64')}`;
}

export function createJiraTicketsService(config, log) {
    const { logError } = log;

    async function createJsmRequest(payload) {
        const response = await fetch(`${config.jiraCloud.host}/rest/servicedeskapi/request`, {
            method: 'POST',
            headers: {
                Accept: 'application/json',
                'Content-Type': 'application/json',
                Authorization: buildAuthHeader(config),
            },
            body: JSON.stringify(payload),
        });

        const responseText = await response.text();
        let data;

        try {
            data = responseText ? JSON.parse(responseText) : {};
        } catch {
            data = { raw: responseText };
        }

        if (!response.ok) {
            const message = data.errorMessage || data.message || responseText || 'Unknown JSM error';
            const error = new Error(message);
            error.status = response.status;
            error.details = data;
            throw error;
        }

        return data;
    }

    async function createJobRequest(payload) {
        try {
            const data = await createJsmRequest(payload);
            return data;
        } catch (error) {
            logError('jiraTickets', 'Failed to create JSM request', error);
            throw error;
        }
    }

    return {
        createJsmRequest,
        createJobRequest,
    };
}