/**
 * Cron Manager Plugin v1.1.0
 * Schedules delayed tasks and sends results back to the original conversation.
 */

var JOBS_KEY = 'cron_jobs';

// Initialize state with jobs from storage (if any)
var storedJobs = shadowman.storage.get(JOBS_KEY);
if (!storedJobs) storedJobs = [];
shadowman.state.set(JOBS_KEY, storedJobs);

// --- Tools ---

shadowman.tools.register('schedule_job', function(args) {
    var schedule = args.schedule;
    var instructions = args.instructions;
    var conversationId = args.conversationId;
    
    var jobs = shadowman.state.get(JOBS_KEY) || [];
    var jobId = 'job_' + Math.random().toString(36).substr(2, 9);
    
    var triggerTime = null;
    var intervalMs = null;

    // Parser: number = minutes interval, string = ISO timestamp
    if (!isNaN(schedule)) {
        intervalMs = parseInt(schedule) * 60 * 1000;
    } else {
        var date = new Date(schedule);
        if (!isNaN(date.getTime())) {
            triggerTime = date.getTime();
        } else {
            return { error: "Invalid schedule format. Use an ISO timestamp or a number of minutes for intervals." };
        }
    }

    var job = {
        id: jobId,
        schedule: schedule,
        instructions: instructions,
        conversationId: conversationId,
        triggerTime: triggerTime,
        intervalMs: intervalMs,
        lastRun: 0,
        createdAt: Date.now()
    };

    jobs.push(job);
    shadowman.storage.set(JOBS_KEY, jobs);
    shadowman.state.set(JOBS_KEY, jobs);

    return { 
        status: "success", 
        jobId: jobId, 
        message: "Job scheduled. It will trigger at " + schedule + " and notify conversation " + conversationId + "."
    };
});

shadowman.tools.register('list_jobs', function() {
    var jobs = shadowman.state.get(JOBS_KEY) || [];
    return { jobs: jobs };
});

shadowman.tools.register('cancel_job', function(args) {
    var jobId = args.jobId;
    var jobs = shadowman.state.get(JOBS_KEY) || [];
    var filtered = [];
    
    for (var i = 0; i < jobs.length; i++) {
        if (jobs[i].id !== jobId) {
            filtered.push(jobs[i]);
        }
    }
    
    if (jobs.length === filtered.length) {
        return { error: "Job not found." };
    }
    
    shadowman.storage.set(JOBS_KEY, filtered);
    shadowman.state.set(JOBS_KEY, filtered);
    return { status: "success", message: "Job " + jobId + " cancelled." };
});

// --- Background Worker ---

shadowman.background.run(function() {
    var JOBS_KEY = 'cron_jobs';
    
    shadowman.log.info("Cron Manager worker started");

    while (true) {
        try {
            var jobs = shadowman.state.get(JOBS_KEY);
            
            if (jobs && jobs.length > 0) {
                var currentTime = Date.now();
                var jobsToTrigger = [];
                var jobsToRemove = [];

                for (var i = 0; i < jobs.length; i++) {
                    var job = jobs[i];
                    if (job.triggerTime && currentTime >= job.triggerTime) {
                        jobsToTrigger.push(job);
                        jobsToRemove.push(job.id);
                    } else if (job.intervalMs && (currentTime - job.lastRun) >= job.intervalMs) {
                        jobsToTrigger.push(job);
                    }
                }

                for (var i = 0; i < jobsToTrigger.length; i++) {
                    var job = jobsToTrigger[i];
                    shadowman.log.info("Triggering cron job " + job.id);
                    
                    shadowman.events.emit('message', {
                        text: "⏰ **Cron Job Triggered**\n\n**Instructions:** " + job.instructions + "\n\n*This is an automated notification from Cron Manager.*",
                        conversationId: job.conversationId,
                        platform: 'CronManager',
                        sender: 'Cron Manager'
                    });

                    if (job.intervalMs) {
                        job.lastRun = currentTime;
                    }
                }

                if (jobsToRemove.length > 0) {
                    var remainingJobs = [];
                    for (var i = 0; i < jobs.length; i++) {
                        if (jobsToRemove.indexOf(jobs[i].id) === -1) {
                            remainingJobs.push(jobs[i]);
                        }
                    }
                    shadowman.state.set(JOBS_KEY, remainingJobs);
                }
            }

            shadowman.utils.sleep(10000);
        } catch (e) {
            shadowman.log.error("Cron worker error: " + e.toString());
            shadowman.utils.sleep(5000);
        }
    }
});

shadowman.log.info("Cron Manager plugin v1.1.0 ready");