import { DependsOnConditions, Condition } from '@segment/actions-core/destination-kit/types'
import type { FBStandardEventType, FBNonStandardEventType } from '../types'

export const fieldDependencies: Record<string, (FBStandardEventType | FBNonStandardEventType)[]> = {
    custom_event_name: ['CustomEvent'],
    content_category: ['PageView', 'ViewContent', 'Search'],
    content_ids: ['AddPaymentInfo','AddToCart','AddToWishlist','InitiateCheckout','Purchase','Search','ViewContent'],
    content_name: ['PageView', 'ViewContent', 'Search'],
    content_type: ['AddToCart', 'Purchase', 'Search', 'ViewContent'],
    contents: ['AddPaymentInfo', 'AddToCart', 'AddToWishlist', 'InitiateCheckout', 'Purchase', 'Search', 'ViewContent'],
    currency: ['AddPaymentInfo', 'AddToCart', 'AddToWishlist', 'CompleteRegistration', 'InitiateCheckout', 'Lead', 'Purchase', 'Search', 'StartTrial', 'Subscribe', 'ViewContent'],
    delivery_category: ['Purchase', 'InitiateCheckout'],
    num_items: ['InitiateCheckout'],
    predicted_ltv: ['Purchase', 'Subscribe', 'StartTrial', 'CompleteRegistration', 'AddPaymentInfo', 'CustomEvent' ],
    net_revenue: ['Purchase'],
    search_string: ['Search'],
    status: ['CompleteRegistration'],
    value: ['AddPaymentInfo', 'AddToCart', 'AddToWishlist', 'CompleteRegistration', 'InitiateCheckout', 'Lead', 'Purchase', 'Search', 'StartTrial', 'Subscribe', 'ViewContent'],
}

export function getDependenciesFor(fieldName: string): DependsOnConditions {
    const conditions: Condition[] = [
        {
            fieldKey: 'event_config.show_fields',
            operator: 'is',
            value: 'true'
        }
    ]
    
    const dependencies = fieldDependencies[fieldName]
    
    if(Array.isArray(dependencies) && dependencies.length > 1) {
        dependencies.forEach(dep => {
            conditions.push({
                fieldKey: 'event_config.event_name',
                operator: 'is',
                value: dep
            })
        })
    }
    
    return {
        match: 'any',
        conditions
    }
}

export function getNotVisibleForEvent(event: FBStandardEventType | FBNonStandardEventType): string[] {
    return Object.entries(fieldDependencies)
        .filter(([_, events]) => !events.includes(event))
        .map(([fieldName]) => fieldName)
}