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// Copyright 2020-2020 The Mandarine.TS Framework authors. All rights reserved. MIT license.
import { ComponentsRegistryUtil } from "../components-registry/componentRegistry.util.ts";import { Mandarine } from "../Mandarine.ns.ts";import { CommonUtils } from "../utils/commonUtils.ts";import { ReflectUtils } from "../utils/reflectUtils.ts";import { MandarineException } from "../exceptions/mandarineException.ts";import { Reflect } from "../reflectMetadata.ts";import { MandarineConstants } from "../mandarineConstants.ts";import { JsonUtils } from "../utils/jsonUtils.ts";
/** * Logic behind decorators of Mandarine's core */export class MainCoreDecoratorProxy {
    public static registerMandarinePoweredComponent(targetClass: any, componentType: Mandarine.MandarineCore.ComponentTypes, options: { [prop: string]: any }, methodIndex: number | null) {        ComponentsRegistryUtil.registerComponent(targetClass, componentType, options, methodIndex);        return;    }
    public static configurationPropertiesDecorator(targetClass: any, path: string) {        Reflect.defineMetadata(MandarineConstants.REFLECTION_MANDARINE_CONFIGURATION_PROPERTIES, path, targetClass);        const target = targetClass.prototype || targetClass;        const valueDecoratorMetadataKeys = Reflect.getMetadataKeys(target) || [];        valueDecoratorMetadataKeys.forEach((key) => {            const metadata: { configKey: string, scope: string, propertyName: string } = Reflect.getMetadata(key, target);            this.valueDecorator(target, metadata.configKey, undefined, metadata.propertyName, JsonUtils.toJson(path, { isFile: true, allowEnvironmentalReferences: true, handleException: (ex) => {                Mandarine.logger.warn(`Something happened while reading custom configuration file for @Value. ${ex} (${path})`);                return {}            } }));                    });    }
    public static valueDecorator(targetClass: any, configKey: string, scope: Mandarine.MandarineCore.ValueScopes | undefined, propertyName: string, propertyObject?: any) {        Reflect.defineMetadata(`${MandarineConstants.REFLECTION_MANDARINE_VALUE_DECORATOR}-${CommonUtils.generateUUID()}`, {            configKey,            scope,            propertyName        }, targetClass);
        try {            if(propertyObject === undefined) {                if(scope == Mandarine.MandarineCore.ValueScopes.CONFIGURATION) propertyObject = Mandarine.Global.getMandarineConfiguration();                if(scope == Mandarine.MandarineCore.ValueScopes.ENVIRONMENTAL) propertyObject = Deno.env.toObject();            }            if(configKey.includes('.')) {                let parts = configKey.split('.');
                if (Array.isArray(parts)) {                    let last: any = parts.pop();                    let keyPropertiesLength = parts.length;                    let propertiesStartingIndex = 1;
                    let currentProperty = parts[0];                                while((propertyObject = propertyObject[currentProperty]) && propertiesStartingIndex < keyPropertiesLength) {                        currentProperty = parts[propertiesStartingIndex];                        propertiesStartingIndex++;                    }                                        targetClass[propertyName] = CommonUtils.parseToKnownType(propertyObject[last]);                } else {                    targetClass[propertyName] = undefined;                }            } else {                targetClass[propertyName] = CommonUtils.parseToKnownType(propertyObject[configKey]);            }        } catch(error) {            targetClass[propertyName] = undefined;        }    }
    public static overrideNativeComponent(targetClass: any, overrideType: Mandarine.MandarineCore.NativeComponents) {        const className = ReflectUtils.getClassName(targetClass);
        if(overrideType === undefined) {            switch(className) {                case "WebMvcConfigurer":                    overrideType = Mandarine.MandarineCore.NativeComponents.WebMVCConfigurer;                break;
                default:                    throw new MandarineException(MandarineException.UNKNOWN_OVERRIDEN.replace("%s", className));                break;            }        }
        Mandarine.Global.getNativeComponentsRegistry().override(overrideType, new targetClass());    }
}