import { useCallback } from 'react';
import { GenericPageData } from '../../pageInterface';
import { FaCog, FaPlus } from 'react-icons/fa';
import { useAutomations, useAutomationOperations } from '../../../../hooks/useAutomations';

// Helper function to convert attribute definitions to column config
const attributesToColumns = (attributes: any[]) => {
    return attributes
        .filter(attr => {
            // Exclude template and complex fields from table display
            const attrNameLower = attr.name.toLowerCase();
            const excludedColumns = ['template', 'executionlogs', 'execution_logs'];
            return !excludedColumns.includes(attrNameLower);
        })
        .map(attr => {
            const attrNameLower = attr.name.toLowerCase();
            const isDateField = attr.type === 'date' ||
                /(date|Date|timestamp|Timestamp|created|Created|updated|Updated|at|At)$/i.test(attr.name);

            const column: any = {
                key: attr.name,
                label: attr.label || attr.name,
                type: attr.type || 'string',
                width: attr.width || 200,
                minWidth: attr.minWidth || 100,
                maxWidth: attr.maxWidth || 400,
                sortable: attr.sortable !== false,
                filterable: isDateField ? false : (attr.filterable !== false),
                searchable: attr.searchable !== false,
                filterOptions: attr.filterOptions
            };

            // Format schedule field
            if (attrNameLower === 'schedule') {
                column.formatter = (value: any) => {
                    if (!value) return '-';
                    const scheduleLabels: Record<string, string> = {
                        '0 */4 * * *': 'Every 4 hours',
                        '0 22 * * *': 'Daily at 22:00',
                        '0 10 * * 1': 'Weekly Monday 10:00'
                    };
                    return scheduleLabels[value] || value;
                };
            }

            // Format active field as badge
            if (attrNameLower === 'active') {
                column.type = 'boolean';
            }

            // Format placeholders as count
            if (attrNameLower === 'placeholders') {
                column.formatter = (value: any) => {
                    if (!value) return '-';
                    let obj;
                    if (typeof value === 'string') {
                        try {
                            obj = JSON.parse(value);
                        } catch {
                            return '-';
                        }
                    } else if (typeof value === 'object') {
                        obj = value;
                    } else {
                        return '-';
                    }
                    const count = Object.keys(obj).length;
                    return `${count} placeholder${count !== 1 ? 's' : ''}`;
                };
            }

            return column;
        });
};

// Hook factory function for automations data
const createAutomationsHook = () => {
    return () => {
        const {
            automations,
            loading,
            error,
            refetch,
            removeOptimistically,
            updateOptimistically,
            attributes,
            permissions,
            pagination,
            fetchAutomationById,
            generateEditFieldsFromAttributes,
            generateCreateFieldsFromAttributes,
            ensureAttributesLoaded
        } = useAutomations();
        const {
            handleAutomationDelete,
            handleAutomationCreate,
            handleAutomationUpdate,
            handleAutomationExecute,
            handleAutomationToggleActive,
            deletingAutomations,
            creatingAutomation,
            executingAutomations,
            deleteError,
            createError,
            updateError
        } = useAutomationOperations();

        const generatedColumns = attributes && attributes.length > 0
            ? attributesToColumns(attributes)
            : undefined;

        // Handle single automation deletion
        const handleDeleteSingle = useCallback(async (automation: any) => {
            const success = await handleAutomationDelete(automation.id);
            if (success) {
                refetch();
            }
        }, [handleAutomationDelete, refetch]);

        // Handle multiple automation deletion
        const handleDeleteMultiple = useCallback(async (selectedAutomations: any[]) => {
            const results = await Promise.all(
                selectedAutomations.map(a => handleAutomationDelete(a.id))
            );
            const allSuccessful = results.every(result => result);
            if (allSuccessful) {
                refetch();
            }
        }, [handleAutomationDelete, refetch]);

        // Wrapped create handler
        const wrappedHandleAutomationCreate = useCallback(async (formData: any) => {
            return await handleAutomationCreate(formData);
        }, [handleAutomationCreate]);

        return {
            data: automations,
            loading,
            error,
            refetch,
            removeOptimistically,
            updateOptimistically,
            // Operations
            handleDelete: handleAutomationDelete,
            handleDeleteMultiple,
            handleAutomationCreate: wrappedHandleAutomationCreate,
            handleAutomationUpdate,
            handleAutomationExecute,
            handleAutomationToggleActive,
            // FormGenerator specific handlers
            onDelete: handleDeleteSingle,
            onDeleteMultiple: handleDeleteMultiple,
            // Loading states
            deletingAutomations,
            creatingAutomation,
            executingAutomations,
            // Error states
            deleteError,
            createError,
            updateError,
            // Attributes and permissions
            attributes,
            permissions,
            pagination,
            columns: generatedColumns,
            // Functions for EditActionButton
            fetchAutomationById,
            generateEditFieldsFromAttributes,
            generateCreateFieldsFromAttributes,
            ensureAttributesLoaded
        };
    };
};

export const automationsPageData: GenericPageData = {
    id: 'workflows-automations',
    path: 'workflows/automations',
    name: 'automations.title',
    description: 'automations.description',

    // Parent page - under 'workflows' group
    parentPath: 'workflows',

    // Visual
    icon: FaCog,
    title: 'automations.title',
    subtitle: 'automations.subtitle',

    // Header buttons
    headerButtons: [
        {
            id: 'new-automation',
            label: 'automations.new_button',
            icon: FaPlus,
            variant: 'primary',
            formConfig: {
                fields: [], // Fields will be generated dynamically from attributes
                popupTitle: 'automations.modal.create.title',
                popupSize: 'large',
                createOperationName: 'handleAutomationCreate',
                successMessage: 'automations.create.success',
                errorMessage: 'automations.create.error'
            }
        }
    ],

    // Content sections - using generic table approach
    content: [
        {
            id: 'automations-table',
            type: 'table',
            tableConfig: {
                hookFactory: createAutomationsHook,
                // Columns are generated dynamically from attributes via hookData.columns
                actionButtons: [
                    {
                        type: 'play',
                        title: 'automations.action.execute',
                        idField: 'id',
                        operationName: 'handleAutomationExecute',
                        loadingStateName: 'executingAutomations',
                        disabled: (hookData: any) => {
                            if (!hookData?.permissions) return { disabled: false };
                            const hasExecute = hookData.permissions.update !== 'n' && hookData.permissions.view;
                            return { disabled: !hasExecute, message: 'No permission to execute automations' };
                        }
                    },
                    {
                        type: 'edit',
                        title: 'automations.action.edit',
                        idField: 'id',
                        nameField: 'label',
                        operationName: 'handleAutomationUpdate',
                        loadingStateName: 'updatingAutomations',
                        fetchItemFunctionName: 'fetchAutomationById',
                        disabled: (hookData: any) => {
                            if (!hookData?.permissions) return { disabled: false };
                            const hasUpdate = hookData.permissions.update !== 'n' && hookData.permissions.view;
                            return { disabled: !hasUpdate, message: 'No permission to edit automations' };
                        }
                    },
                    {
                        type: 'delete',
                        title: 'automations.action.delete',
                        idField: 'id',
                        operationName: 'handleDelete',
                        loadingStateName: 'deletingAutomations',
                        disabled: (hookData: any) => {
                            if (!hookData?.permissions) return { disabled: false };
                            const hasDelete = hookData.permissions.delete !== 'n' && hookData.permissions.view;
                            return { disabled: !hasDelete, message: 'No permission to delete automations' };
                        }
                    }
                ],
                searchable: true,
                filterable: true,
                sortable: true,
                resizable: true,
                pagination: true,
                pageSize: 10,
                className: 'automations-table'
            }
        }
    ],

    // Page behavior
    persistent: false,
    preload: false,
    preserveState: true,
    moduleEnabled: true,

    // Lifecycle hooks
    onActivate: async () => {
        if (import.meta.env.DEV) console.log('Automations activated');
    },
    onLoad: async () => {
        if (import.meta.env.DEV) console.log('Automations loaded');
    },
    onUnload: async () => {
        if (import.meta.env.DEV) console.log('Automations unloaded');
    }
};