/*
 *   Copyright 2024 Vonage
 *
 *   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
 *
 *        http://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.
 */
package com.vonage.client.meetings;

import com.fasterxml.jackson.annotation.JsonIgnore;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.vonage.client.Jsonable;
import com.vonage.client.JsonableBaseObject;
import java.net.URI;
import java.util.UUID;
import java.util.regex.Pattern;

public class Theme extends JsonableBaseObject {
        static final Pattern COLOR_PATTERN = Pattern.compile("(#[a-fA-F0-9]{6}|[a-fA-F0-9]{3})");

        @JsonIgnore private boolean update = false;
        private UUID themeId, applicationId;
        private ThemeDomain domain;
        private String themeName, mainColor, accountId, shortCompanyUrl,
                        brandText, brandImageColored, brandImageWhite, brandedFavicon;
        private URI brandImageColoredUrl, brandImageWhiteUrl, brandedFaviconUrl;

        protected Theme() {
        }

        Theme(Builder builder) {
                if ((mainColor = builder.mainColor) != null && !COLOR_PATTERN.matcher(mainColor).matches()) {
                        throw new IllegalArgumentException("Main color must be a valid hex pallet.");
                }

                if ((brandText = builder.brandText) != null) {
                        if (brandText.length() > 200) {
                                throw new IllegalArgumentException("Brand text cannot exceed 200 characters.");
                        }
                        else if (brandText.trim().isEmpty()) {
                                throw new IllegalArgumentException("Brand text cannot be blank.");
                        }
                }

                if ((themeName = builder.themeName) != null) {
                        if (themeName.length() > 200) {
                                throw new IllegalArgumentException("Theme name cannot exceed 200 characters.");
                        }
                        else if (themeName.trim().isEmpty()) {
                                throw new IllegalArgumentException("Theme name cannot be blank.");
                        }
                }

                if ((shortCompanyUrl = builder.shortCompanyUrl) != null) {
                        if (shortCompanyUrl.length() > 128) {
                                throw new IllegalArgumentException("Short company URL cannot exceed 128 characters.");
                        }
                        else if (shortCompanyUrl.trim().isEmpty()) {
                                throw new IllegalArgumentException("Short company URL cannot be blank.");
                        }
                }
        }

        @JsonIgnore
        void setThemeIdAndFlagUpdate(UUID themeId) {
                this.themeId = themeId;
                update = true;
        }

        /**
         * Unique theme ID.
         *
         * @return The theme ID.
         */
        @JsonProperty("theme_id")
        public UUID getThemeId() {
                return themeId;
        }

        /**
         * Theme name.
         *
         * @return Name of the theme.
         */
        @JsonProperty("theme_name")
        public String getThemeName() {
                return themeName;
        }

        /**
         * The theme's application domain.
         *
         * @return The domain as an enum.
         */
        @JsonProperty("domain")
        public ThemeDomain getDomain() {
                return domain;
        }

        /**
         * Account ID.
         *
         * @return The account ID (API key).
         */
        @JsonProperty("account_id")
        public String getAccountId() {
                return accountId;
        }

        /**
         * Unique application ID.
         *
         * @return The application ID.
         */
        @JsonProperty("application_id")
        public UUID getApplicationId() {
                return applicationId;
        }

        /**
         * Main colour hex code.
         *
         * @return The main theme colour (hex value).
         */
        @JsonProperty("main_color")
        public String getMainColor() {
                return mainColor;
        }

        /**
         * Company name to include in the URL.
         *
         * @return The company's short URL.
         */
        @JsonProperty("short_company_url")
        public String getShortCompanyUrl() {
                return shortCompanyUrl;
        }

        /**
         * Brand text that will appear in the application.
         *
         * @return The branding text.
         */
        @JsonProperty("brand_text")
        public String getBrandText() {
                return brandText;
        }

        /**
         * Coloured logo's key in storage system.
         *
         * @return The brand image in colour.
         */
        @JsonProperty("brand_image_colored")
        public String getBrandImageColored() {
                return brandImageColored;
        }

        /**
         * White logo's key in storage system.
         *
         * @return The brand image in white.
         */
        @JsonProperty("brand_image_white")
        public String getBrandImageWhite() {
                return brandImageWhite;
        }

        /**
         * Favicon's key in storage system.
         *
         * @return The brand favicon key.
         */
        @JsonProperty("branded_favicon")
        public String getBrandedFavicon() {
                return brandedFavicon;
        }

        /**
         * Coloured logo's link.
         *
         * @return The coloured brand image URL.
         */
        @JsonProperty("brand_image_colored_url")
        public URI getBrandImageColoredUrl() {
                return brandImageColoredUrl;
        }

        /**
         * White logo's link.
         *
         * @return The white brand image URL.
         */
        @JsonProperty("brand_image_white_url")
        public URI getBrandImageWhiteUrl() {
                return brandImageWhiteUrl;
        }

        /**
         * Favicon's link.
         *
         * @return The favicon URL.
         */
        @JsonProperty("branded_favicon_url")
        public URI getBrandedFaviconUrl() {
                return brandedFaviconUrl;
        }

        @Override
        public String toJson() {
                if (update) {
                        UUID tempId = themeId;
                        themeId = null;
                        String json = "{\"update_details\":" + super.toJson() + "}";
                        update = false;
                        themeId = tempId;
                        return json;
                }
                else {
                        return super.toJson();
                }
        }

        /**
         * Creates an instance of this class from a JSON payload.
         *
         * @param json The JSON string to parse.
         * @return An instance of this class with the fields populated, if present.
         */
        public static Theme fromJson(String json) {
                return Jsonable.fromJson(json);
        }
        
        /**
         * Entry point for constructing an instance of this class.
         * 
         * @return A new Builder.
         */
        public static Builder builder() {
                return new Builder();
        }
        
        public static class Builder {
                private String themeName, mainColor, brandText, shortCompanyUrl;
        
                Builder() {}
        
                /**
                 * (OPTIONAL) The name to give the theme (maximum 200 characters).
                 *
                 * @param themeName The theme name.
                 *
                 * @return This builder.
                 */
                public Builder themeName(String themeName) {
                        this.themeName = themeName;
                        return this;
                }

                /**
                 * (REQUIRED) The main theme colour code (hex value).
                 *
                 * @param mainColor The colour's hex code, including the # character.
                 *
                 * @return This builder.
                 */
                public Builder mainColor(String mainColor) {
                        this.mainColor = mainColor;
                        return this;
                }

                /**
                 * (OPTIONAL) The short company URL. Must be a valid URI, cannot exceed 128 characters.
                 *
                 * @param shortCompanyUrl The URL as a String.
                 *
                 * @return This builder.
                 */
                public Builder shortCompanyUrl(String shortCompanyUrl) {
                        this.shortCompanyUrl = shortCompanyUrl;
                        return this;
                }

                /**
                 * (REQUIRED) The brand / logo text.
                 *
                 * @param brandText The text.
                 *
                 * @return This builder.
                 */
                public Builder brandText(String brandText) {
                        this.brandText = brandText;
                        return this;
                }

        
                /**
                 * Builds the {@linkplain Theme}.
                 *
                 * @return An instance of Theme, populated with all fields from this builder.
                 */
                public Theme build() {
                        return new Theme(this);
                }
        }
}