using System;
using System.IO;

namespace Azerion.BlueStack.Editor.Android.Gradle
{
    public class GradleDependencyCheckResult
    {
        public GradleDependencyCheckResult(bool hasMissingDependency, string errorMessage)
        {
            HasMissingDependency = hasMissingDependency;
            ErrorMessage = errorMessage;
        }

        public bool HasMissingDependency { get; }
        public string ErrorMessage { get; }
    }

    public static class GradleConfigUtils
    {
        public static string AddAndroidXProperties(string gradlePropertiesFileContent)
        {
            bool isUseAndroidXFound = false;
            bool isEnableJetifier = false;
            string[] lines = gradlePropertiesFileContent.Split('\n');
            for (var i = 0; i < lines.Length; i++)
            {
                if (lines[i].Contains("android.useAndroidX"))
                {
                    var propertyElements = lines[i].Split('=');
                    if (propertyElements.Length >= 2 && propertyElements[1] == "false")
                    {
                        lines[i] = "android.useAndroidX=true";
                    }

                    isUseAndroidXFound = true;
                }

                if (lines[i].Contains("android.enableJetifier"))
                {
                    var propertyElements = lines[i].Split('=');
                    if (propertyElements.Length >= 2 && propertyElements[1] == "false")
                    {
                        lines[i] = "android.enableJetifier=true";
                    }

                    isEnableJetifier = true;
                }
            }

            gradlePropertiesFileContent = string.Join("\n", lines);
            if (!isEnableJetifier)
            {
                gradlePropertiesFileContent = gradlePropertiesFileContent + "\n" + "android.enableJetifier=true";
            }

            if (!isUseAndroidXFound)
            {
                gradlePropertiesFileContent = gradlePropertiesFileContent + "\n" + "android.useAndroidX=true";
            }

            return gradlePropertiesFileContent;
        }

        public static GradleDependencyCheckResult CheckSDKGradleDependencies(string gradleFilePath)
        {
            String[] gradleLines = File.ReadAllLines(gradleFilePath);
            var isFound = false;
            var androidMavenDependency = "";
            var dependencies = DependencyProvider.GetDependencies(new AndroidDependencyParser());
            foreach (var dependency in dependencies)
            {
                var androidDependency = (AndroidDependency)dependency;
                isFound = false;
                foreach (string line in gradleLines)
                {
                    androidMavenDependency = androidDependency.GradleDependency;
                    if (line.Contains(androidMavenDependency) && !line.Trim().StartsWith("//"))
                    {
                        isFound = true;
                    }
                }

                if (!isFound)
                {
                    break;
                }
            }

            if (!isFound)
            {
                return new GradleDependencyCheckResult(true,
                    androidMavenDependency + " dependency is missing or commented out in your 'mainTemplate.gradle.'");
            }

            return new GradleDependencyCheckResult(false, "");
        }
    }
}