using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using BattSim.Models;

namespace BattSim.Services
{
    public class ReportGenerator
    {
        public static void GenerateReport(List<EnergyData> originalData, Dictionary<int, List<BatteryDayResult>> scenarios)
        {
            using (var writer = new StreamWriter("../../../BatteryAnalysisReport.md"))
            {
                writer.WriteLine("# Battery Cost Analysis Report\n");
                
                // Original data summary
                writer.WriteLine("## Original Data Summary");
                var totalConsumption = originalData.Sum(d => d.DayConsumption + d.NightConsumption);
                var totalProduction = originalData.Sum(d => d.DayProduction + d.NightProduction);
                writer.WriteLine($"Total Consumption: {totalConsumption:F2} kWh");
                writer.WriteLine($"Total Production: {totalProduction:F2} kWh\n");
                
                // Generate graph data
                writer.WriteLine("### Energy Consumption and Production\n");
                writer.WriteLine("```");
                writer.WriteLine("Date,Total Production,Total Consumption");
                foreach (var day in originalData)
                {
                    var prod = day.DayProduction + day.NightProduction;
                    var cons = day.DayConsumption + day.NightConsumption;
                    writer.WriteLine($"{day.Date:yyyy-MM-dd},{prod:F2},{cons:F2}");
                }
                writer.WriteLine("```\n");
                
                writer.WriteLine("![Energy Graph](energy_graph.png)");
                writer.WriteLine("(Graph showing total production in green and total consumption in red)\n");
                
                // Scenario analysis
                foreach (var scenario in scenarios)
                {
                    var batteryCount = scenario.Key;
                    var results = scenario.Value;
                    
                    writer.WriteLine($"## Scenario with {batteryCount} Battery{(batteryCount > 1 ? "ies" : "")}");
                    writer.WriteLine($"Battery Capacity: {batteryCount * 2.6} kWh\n");
                    
                    var totalReducedConsumption = results.Sum(r => r.ReducedConsumption);
                    var totalReducedProduction = results.Sum(r => r.ReducedProduction);
                    var savings = totalReducedConsumption * 0.30; // Assuming €0.30 per kWh
                    
                    writer.WriteLine($"Total Reduced Consumption: {totalReducedConsumption:F2} kWh");
                    writer.WriteLine($"Total Reduced Production: {totalReducedProduction:F2} kWh");
                    writer.WriteLine($"Estimated Annual Savings: €{savings:F2}\n");
                    
                    // Generate scenario graph data
                    writer.WriteLine($"### Battery Performance for {batteryCount} Battery{(batteryCount > 1 ? "ies" : "")}\n");
                    writer.WriteLine("```");
                    writer.WriteLine("Date,Charged Energy,Used Energy,Remaining Energy");
                    foreach (var result in results)
                    {
                        writer.WriteLine($"{result.Date:yyyy-MM-dd},{result.ChargedEnergy:F2},{result.UsedEnergy:F2},{result.RemainingEnergy:F2}");
                    }
                    writer.WriteLine("```\n");
                    
                    writer.WriteLine($"![Battery Performance Graph](battery_{batteryCount}_graph.png)");
                    writer.WriteLine("(Graph showing charged energy in blue, used energy in orange, and remaining energy in gray)\n");
                    
                    // Detailed daily results
                    writer.WriteLine("### Daily Results");
                    writer.WriteLine("| Date | Charged (kWh) | Used (kWh) | Remaining (kWh) |");
                    writer.WriteLine("|------|---------------|------------|-----------------|");
                    
                    foreach (var result in results.Take(10)) // Show first 10 days
                    {
                        writer.WriteLine($"| {result.Date:yyyy-MM-dd} | {result.ChargedEnergy:F2} | {result.UsedEnergy:F2} | {result.RemainingEnergy:F2} |");
                    }
                    
                    writer.WriteLine("\n---\n");
                }
            }
            
            Console.WriteLine("Report generated: BatteryAnalysisReport.md");
        }
    }
}