using Microsoft.AspNetCore.Identity;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Options;
using PowderCoating.Core.Entities;
using PowderCoating.Infrastructure.Data;
using System.Security.Claims;

namespace PowderCoating.Infrastructure.Services;

/// <summary>
/// Custom claims principal factory that adds company-specific claims to the user's identity
/// </summary>
public class ApplicationUserClaimsPrincipalFactory : UserClaimsPrincipalFactory<ApplicationUser, IdentityRole>
{
    private readonly ApplicationDbContext _context;

    public ApplicationUserClaimsPrincipalFactory(
        UserManager<ApplicationUser> userManager,
        RoleManager<IdentityRole> roleManager,
        IOptions<IdentityOptions> options,
        ApplicationDbContext context)
        : base(userManager, roleManager, options)
    {
        _context = context;
    }

    protected override async Task<ClaimsIdentity> GenerateClaimsAsync(ApplicationUser user)
    {
        var identity = await base.GenerateClaimsAsync(user);

        // Add CompanyId claim if user has a company
        if (user.CompanyId > 0)
        {
            identity.AddClaim(new Claim("CompanyId", user.CompanyId.ToString()));

            // Add subscription plan display name from DB (for display in nav)
            var company = await _context.Companies.IgnoreQueryFilters()
                .Where(c => c.Id == user.CompanyId && !c.IsDeleted)
                .Select(c => new { c.SubscriptionPlan })
                .FirstOrDefaultAsync();
            if (company != null)
            {
                // Look up the DisplayName from SubscriptionPlanConfig so it reflects DB values
                var planConfig = await _context.SubscriptionPlanConfigs.IgnoreQueryFilters()
                    .Where(p => p.Plan == company.SubscriptionPlan && p.IsActive && !p.IsDeleted)
                    .Select(p => new { p.DisplayName })
                    .FirstOrDefaultAsync();
                var planName = planConfig?.DisplayName ?? company.SubscriptionPlan.ToString();
                identity.AddClaim(new Claim("SubscriptionPlan", planName));
            }
        }

        // Add CompanyRole claim if user has a company role
        if (!string.IsNullOrEmpty(user.CompanyRole))
        {
            identity.AddClaim(new Claim("CompanyRole", user.CompanyRole));
        }

        // Add user's full name for display purposes
        identity.AddClaim(new Claim("FullName", user.FullName));

        // Add appearance claims
        identity.AddClaim(new Claim("Theme", user.Theme ?? "light"));
        identity.AddClaim(new Claim("SidebarColor", user.SidebarColor ?? "ocean"));
        identity.AddClaim(new Claim("HasProfilePicture",
            (!string.IsNullOrEmpty(user.ProfilePictureFilePath)).ToString().ToLower()));
        identity.AddClaim(new Claim("ProfilePictureVersion", (user.UpdatedAt ?? DateTime.UtcNow).Ticks.ToString()));

        // Add permission claims for easier authorization
        if (user.CanManageJobs)
        {
            identity.AddClaim(new Claim("Permission", "ManageJobs"));
        }

        if (user.CanManageInventory)
        {
            identity.AddClaim(new Claim("Permission", "ManageInventory"));
        }

        if (user.CanManageCustomers)
        {
            identity.AddClaim(new Claim("Permission", "ManageCustomers"));
        }

        if (user.CanCreateQuotes)
        {
            identity.AddClaim(new Claim("Permission", "CreateQuotes"));
        }

        if (user.CanApproveQuotes)
        {
            identity.AddClaim(new Claim("Permission", "ApproveQuotes"));
        }

        if (user.CanManageCalendar)
        {
            identity.AddClaim(new Claim("Permission", "ManageCalendar"));
        }

        if (user.CanViewCalendar)
        {
            identity.AddClaim(new Claim("Permission", "ViewCalendar"));
        }

        if (user.CanManageProducts)
        {
            identity.AddClaim(new Claim("Permission", "ManageProducts"));
        }

        if (user.CanViewProducts)
        {
            identity.AddClaim(new Claim("Permission", "ViewProducts"));
        }

        if (user.CanManageEquipment)
        {
            identity.AddClaim(new Claim("Permission", "ManageEquipment"));
        }

        if (user.CanManageVendors)
        {
            identity.AddClaim(new Claim("Permission", "ManageVendors"));
        }

        if (user.CanManageMaintenance)
        {
            identity.AddClaim(new Claim("Permission", "ManageMaintenance"));
        }

        if (user.CanManageInvoices)
        {
            identity.AddClaim(new Claim("Permission", "ManageInvoices"));
        }

        if (user.CanViewReports)
        {
            identity.AddClaim(new Claim("Permission", "ViewReports"));
        }

        if (user.CanManageBills)
        {
            identity.AddClaim(new Claim("Permission", "ManageBills"));
        }

        if (user.CanManageAccounting)
        {
            identity.AddClaim(new Claim("Permission", "ManageAccounting"));
        }

        return identity;
    }
}