/**
 * Copyright 2013-2026 the original author or authors from the JHipster project.
 *
 * This file is part of the JHipster project, see https://www.jhipster.tech/
 * for more information.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
const filterNullishValues = (value) => value != null;
const MUTATION_CONTEXT_SYMBOL = '__MutationContext__';
/**
 * Copy and remove null and undefined values
 * @param object
 */
export function removeFieldsWithNullishValues(object) {
    return filterValue(object, filterNullishValues);
}
/**
 * Copy and remove null and undefined values
 * @param object
 */
function filterValue(object, customFilterValue = filterNullishValues, deep = 1) {
    const clone = {};
    for (const [key, value] of Object.entries(object)) {
        if (customFilterValue(value)) {
            if (typeof value === 'object') {
                if (Array.isArray(value)) {
                    clone[key] = value.filter(customFilterValue);
                }
                else if (deep < 4) {
                    // Avoid recursion depth issues
                    clone[key] = filterValue(value, customFilterValue, deep + 1);
                }
            }
            else {
                clone[key] = value;
            }
        }
    }
    return clone;
}
/**
 * Picks every field from source.
 * A field with undefined value is returned for missing fields.
 */
export const pickFields = (source, fields) => Object.fromEntries(fields.map(field => [field, source[field]]));
export const DelayedMutation = '__DelayedMutation__';
export const UndefinedMutation = '__UndefinedMutation__';
const OverrideMutation = Symbol('OverrideMutation');
export const overrideMutateDataProperty = (fn) => {
    fn[OverrideMutation] = true;
    return fn;
};
export const dontOverrideMutateDataProperty = (fn) => {
    fn[OverrideMutation] = false;
    return fn;
};
class PropertyNotYetDefinedError extends Error {
    constructor(property) {
        super(`Property ${property} is not defined yet`);
        this.name = 'PropertyNotYetDefinedError';
    }
}
export const createDelayedMutationContext = (options = {}) => {
    const context = {};
    context[MUTATION_CONTEXT_SYMBOL] = { ...options, delayContext: {} };
    return context;
};
const isMutationContext = (context) => {
    return context && typeof context === 'object' && MUTATION_CONTEXT_SYMBOL in context && context[MUTATION_CONTEXT_SYMBOL] !== undefined;
};
const createNotYetDefinedProxy = (target) => new Proxy(target, {
    get: (obj, prop) => {
        if (prop in obj) {
            return obj[prop];
        }
        throw new PropertyNotYetDefinedError(prop.toString());
    },
});
const handleMutateDataCallback = (fn, context, { defaults }) => {
    const mutationContext = isMutationContext(context);
    const { autoDelay = false } = mutationContext ? (context[MUTATION_CONTEXT_SYMBOL] ?? {}) : {};
    try {
        return fn(autoDelay ? createNotYetDefinedProxy(context) : context, mutationContext && !defaults ?
            { delayMarker: DelayedMutation, undefinedMarker: UndefinedMutation, data: context }
            : { undefinedMarker: UndefinedMutation, data: context });
    }
    catch (error) {
        if (error instanceof PropertyNotYetDefinedError) {
            return DelayedMutation;
        }
        throw error;
    }
};
const applyDelayedMutations = (context, opts) => {
    let mutationApplied = false;
    const delayedContext = context[MUTATION_CONTEXT_SYMBOL].delayContext;
    if (delayedContext) {
        const { defaults = true, throwOnDelay = false } = opts || {};
        for (const [key, value] of Object.entries(delayedContext)) {
            if (key in context && context[key] !== undefined) {
                delete delayedContext[key];
            }
            else {
                let result = undefined;
                for (const fn of value) {
                    result = handleMutateDataCallback(fn, context, { defaults });
                    if (result !== DelayedMutation && result !== undefined) {
                        break;
                    }
                }
                if (result === DelayedMutation) {
                    if (throwOnDelay) {
                        throw new Error(`Mutation for key ${key} is still delayed, passing defaults should return a valid value instead of Delay Symbol`);
                    }
                    continue;
                }
                else if (result === undefined) {
                    if (throwOnDelay) {
                        throw new Error(`Mutation for key ${key} is undefined, passing defaults should return a valid value`);
                    }
                }
                else if (result === UndefinedMutation) {
                    result = undefined;
                }
                delete delayedContext[key];
                context[key] = result;
                mutationApplied = true;
            }
        }
    }
    return mutationApplied;
};
export const finalizeMutations = (context) => {
    if (isMutationContext(context)) {
        while (applyDelayedMutations(context, { defaults: true })) {
            // Apply mutations until there is no more mutation to apply, this is to handle mutations that depend on other mutations.
        }
        context[MUTATION_CONTEXT_SYMBOL].autoDelay = false;
        // In case there is still delayed mutations, it means that some required properties are missing, we throw an error to avoid silent issues.
        applyDelayedMutations(context, { defaults: true, throwOnDelay: true });
        delete context[MUTATION_CONTEXT_SYMBOL];
    }
};
/**
 * Mutation properties accepts:
 * - functions: receives the data and the return value is set at the data property.
 * - non functions: data property will receive the property in case current value is undefined.
 * - __override__ property: if set to false, functions will not override existing values.
 *
 * Applies each mutation object in order.
 *
 * Note: if data property is expected to be a function, mutation should be a function that returns the desired function.
 *
 * @example
 * // data = { prop: 'foo-bar', prop2: 'foo2', fn: () => 'fn' }
 * mutateData(
 *   data,
 *   { prop: 'foo', prop2: ({ prop }) => prop + 2, fn: () => () => 'fn' },
 *   { prop: ({ prop }) => prop + '-bar', prop2: 'won\'t override' },
 *   { __override__: false, prop: () => 'won\'t override' },
 * );
 */
export function mutateData(context, ...mutations) {
    if (typeof context !== 'object' || context === null || Array.isArray(context)) {
        throw new Error('Context should be a non null and non array object');
    }
    for (let mutation of mutations) {
        if (typeof mutation === 'function') {
            mutation = mutation(context);
        }
        const override = mutation.__override__;
        const mutationEntries = Object.entries(mutation).filter(([key]) => key !== '__override__');
        if (mutationEntries.length === 0) {
            continue;
        }
        for (const [key, value] of mutationEntries) {
            if (typeof value === 'function') {
                if ((override !== false && value[OverrideMutation] !== false) ||
                    !(key in context) ||
                    context[key] === undefined ||
                    value[OverrideMutation] === true) {
                    const result = handleMutateDataCallback(value, context, { defaults: false });
                    if (result === DelayedMutation) {
                        if (isMutationContext(context)) {
                            const delayed = (context[MUTATION_CONTEXT_SYMBOL].delayContext[key] ??= []);
                            // Last mutation should take precedence.
                            delayed.unshift(value);
                        }
                        else {
                            throw new Error(`Context should be a mutation context to use delayed mutations, missing context for key: ${key}`);
                        }
                    }
                    else {
                        context[key] = result === UndefinedMutation ? undefined : result;
                    }
                }
            }
            else if (!(key in context) || context[key] === undefined || override === true) {
                context[key] = value;
            }
        }
        if (isMutationContext(context)) {
            applyDelayedMutations(context, { defaults: false });
        }
    }
}
