// Copyright (c) Microsoft Corporation. All rights reserved.
// Licensed under the MIT License.

package com.microsoft.typespec.http.client.generator.core.extension.model.codemodel;

import java.util.HashMap;
import java.util.Map;

/**
 * The context in which a schema is used.
 */
public enum SchemaContext {
    /**
     * The schema is used as an input.
     */
    INPUT("input"),

    /**
     * The schema is used as an output.
     */
    OUTPUT("output"),

    /**
     * The schema is used as an exception.
     */
    EXCEPTION("exception"),

    /**
     * The schema is used publicly.
     */
    PUBLIC("public"),

    /**
     * The schema is used as a paged result.
     */
    PAGED("paged"),

    /**
     * The schema is used internally.
     */
    INTERNAL("internal"),

    /**
     * The schema is from external library.
     */
    EXTERNAL("external"),

    /**
     * The schema is used as a JSON merge patch.
     */
    JSON_MERGE_PATCH("json-merge-patch"),

    /**
     * The schema is used as options group.
     */
    OPTIONS_GROUP("options-group");

    private final String value;
    private final static Map<String, SchemaContext> CONSTANTS = new HashMap<>();

    static {
        for (SchemaContext c : values()) {
            CONSTANTS.put(c.value, c);
        }
    }

    SchemaContext(String value) {
        this.value = value;
    }

    @Override
    public String toString() {
        return this.value;
    }

    /**
     * Gets the value of the schema context.
     *
     * @return The value of the schema context.
     */
    public String value() {
        return this.value;
    }

    /**
     * Returns the enum constant of this type with the specified value.
     *
     * @param value The value of the constant.
     * @return The enum constant of this type with the specified value.
     * @throws IllegalArgumentException If the specified value does not map to one of the constants in the enum.
     */
    public static SchemaContext fromValue(String value) {
        SchemaContext constant = CONSTANTS.get(value);
        if (constant == null) {
            throw new IllegalArgumentException(value);
        } else {
            return constant;
        }
    }
}
