8. Architecture

admin

May 31, 2026

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122

PHP

42

XML

12

PHTML

15

JS

4

CSS/LESS

Event Observers

Event	Observer	Area
`sales_model_service_quote_submit_before`	`AddSurchargeToOrder`	global
`sales_order_place_after`	`TrackSurchargeAnalytics`	global
`sales_quote_collect_totals_after`	`AnalyticsTracking`	global
`sales_quote_collect_totals_after`	`ValidateCouponConditions`	global
`checkout_cart_save_after`	`CartAbandonment`	global

Plugin Interceptors

Target	Plugin
`QuoteManagement`	`OrderRepository`
`Session`	`SessionPlugin`
`Cart`	`CartPlugin`
`Address`	`AddressPlugin`
`Quote`	`SetAdminOrderFlag`
`CommonTaxCollector`	`CommonTaxCollectorPlugin`
`Totals`	`CartTotalsCollectPlugin`
`Onepage`	`OnepageTotalsPlugin`
`CartTotalRepository`	`TotalsSegmentTitlePlugin`
`GuestCartTotalRepository`	`TotalsSegmentTitlePlugin`
`TotalsConverter`	`TotalsConverterTitlePlugin`
`CartTotalManagement`	`TotalsInformationTitlePlugin`
`GuestCartTotalManagement`	`TotalsInformationTitlePlugin`
`TotalsInformationManagement`	`TotalsInformationCalculateTitlePlugin`
`GuestTotalsInformationManagement`	`TotalsInformationCalculateTitlePlugin`
`Page`	`DebugHints`
`Cart`	`Cart`
`Json`	`JsonTotalsPlugin`

Cron Jobs

Job	Schedule
`ewebecommerce_surcharge_cleanup`	`0 2 * * *`
`ewebecommerce_surcharge_analytics_report`	`0 8 * * 1`

CLI Commands

Command	Description
`surcharge:rules:export`	Export surcharge rules to CSV or JSON
`surcharge:rules:import`	Import surcharge rules from CSV or JSON