import { useState, useEffect, useCallback } from 'react';

export type MaintAction = {
    endpoint: string;
    label: string;
    description: string;
    needsPreStep?: boolean;
    // When set, after OTP passes the modal calls this endpoint to fetch
    // `{ locked, free }` agent buckets and shows a picker. Confirm then
    // POSTs to `endpoint` with { agentId } from the selection.
    agentPickerEndpoint?: string;
    clientSideHandler?: (payload: any) => Promise<{ status: string; message: string }>;
};

const MAINT_ACTIONS: Record<string, MaintAction> = {
    forceReady: {
        endpoint: 'force-ready',
        label: 'Force Ready',
        description: 'Logout and re-login the agent to force Ready state on Ozonetel.',
        agentPickerEndpoint: 'session-status',
    },
    unlockAgent: {
        endpoint: 'unlock-agent',
        label: 'Unlock Agent',
        description: 'Release the Redis session lock so the agent can log in again.',
        agentPickerEndpoint: 'session-status',
    },
    backfill: {
        endpoint: 'backfill-missed-calls',
        label: 'Backfill Missed Calls',
        description: 'Match existing missed calls with lead records by phone number.',
    },
    fixTimestamps: {
        endpoint: 'fix-timestamps',
        label: 'Fix Timestamps',
        description: 'Correct call timestamps that were stored with IST double-offset.',
    },
    clearCampaignLeads: {
        endpoint: 'clear-campaign-leads',
        label: 'Clear Campaign Leads',
        description: 'Delete all imported leads from a selected campaign. For testing only.',
        needsPreStep: true,
    },
    clearAnalysisCache: {
        endpoint: 'clear-analysis-cache',
        label: 'Regenerate AI Analysis',
        description: 'Clear all cached recording analyses. Next AI click will re-transcribe and re-analyze.',
    },
};

export const useMaintShortcuts = () => {
    const [activeAction, setActiveAction] = useState<MaintAction | null>(null);
    const [isOpen, setIsOpen] = useState(false);

    const openAction = useCallback((action: MaintAction) => {
        setActiveAction(action);
        setIsOpen(true);
    }, []);

    const close = useCallback(() => {
        setIsOpen(false);
        setActiveAction(null);
    }, []);

    // Listen for programmatic triggers (e.g., long-press on AI button)
    useEffect(() => {
        const maintHandler = (e: CustomEvent<string>) => {
            const action = MAINT_ACTIONS[e.detail];
            if (action) openAction(action);
        };
        window.addEventListener('maint:trigger', maintHandler as EventListener);
        return () => window.removeEventListener('maint:trigger', maintHandler as EventListener);
    }, [openAction]);

    useEffect(() => {
        const handler = (e: KeyboardEvent) => {
            if (e.ctrlKey && e.shiftKey && e.key === 'R') {
                e.preventDefault();
                openAction(MAINT_ACTIONS.forceReady);
            }
            if (e.ctrlKey && e.shiftKey && e.key === 'U') {
                e.preventDefault();
                openAction(MAINT_ACTIONS.unlockAgent);
            }
            if (e.ctrlKey && e.shiftKey && e.key === 'B') {
                e.preventDefault();
                openAction(MAINT_ACTIONS.backfill);
            }
            if (e.ctrlKey && e.shiftKey && e.key === 'T') {
                e.preventDefault();
                openAction(MAINT_ACTIONS.fixTimestamps);
            }
            if (e.ctrlKey && e.shiftKey && e.key === 'C') {
                e.preventDefault();
                openAction(MAINT_ACTIONS.clearCampaignLeads);
            }
        };

        window.addEventListener('keydown', handler);
        return () => window.removeEventListener('keydown', handler);
    }, [openAction]);

    return { isOpen, activeAction, close, openAction, actions: MAINT_ACTIONS };
};