/**
 * Sponsor Feature Flow Tests
 * 
 * These tests verify routing, guards, navigation, cross-screen state, and user flows
 * for the sponsor module. They run with real frontend and mocked contracts.
 * 
 * Contracts are defined in apps/website/lib/types/generated
 * 
 * @file apps/website/tests/flows/sponsor.test.ts
 */

describe('Sponsor Feature Flow', () => {
  describe('Sponsor Navigation', () => {
    it('should redirect to login when accessing sponsor dashboard without authentication', () => {
      // TODO: Implement test
      // - Navigate to /sponsor/dashboard
      // - Verify redirect to /auth/login
      // - Check return URL parameter
    });

    it('should allow access to sponsor dashboard with valid authentication', () => {
      // TODO: Implement test
      // - Mock AuthSessionDTO
      // - Navigate to /sponsor/dashboard
      // - Verify dashboard loads successfully
      // - Check for expected sponsor dashboard elements
    });

    it('should navigate from sponsor dashboard to campaigns page', () => {
      // TODO: Implement test
      // - Login and navigate to /sponsor/dashboard
      // - Click "View Campaigns" button or link
      // - Verify navigation to /sponsor/campaigns
    });

    it('should navigate from sponsor dashboard to leagues page', () => {
      // TODO: Implement test
      // - Login and navigate to /sponsor/dashboard
      // - Click "View Sponsored Leagues" button or link
      // - Verify navigation to /sponsor/leagues
    });

    it('should navigate from sponsor dashboard to billing page', () => {
      // TODO: Implement test
      // - Login and navigate to /sponsor/dashboard
      // - Click "Billing" button or link
      // - Verify navigation to /sponsor/billing
    });

    it('should navigate from sponsor dashboard to settings page', () => {
      // TODO: Implement test
      // - Login and navigate to /sponsor/dashboard
      // - Click "Settings" button or link
      // - Verify navigation to /sponsor/settings
    });

    it('should handle direct navigation to sponsor routes', () => {
      // TODO: Implement test
      // - Login and attempt direct navigation to /sponsor/dashboard
      // - Verify sponsor dashboard renders correctly
      // - Check URL remains /sponsor/dashboard
    });
  });

  describe('Sponsor Dashboard Data Flow', () => {
    it('should load and display sponsor dashboard overview data', () => {
      // TODO: Implement test
      // - Mock GetSponsorDashboardQueryParams response with SponsorDashboardDTO
      // - Navigate to /sponsor/dashboard
      // - Verify sponsor name is displayed
      // - Verify metrics are shown (impressions, engagement, etc.)
      // - Verify sponsored leagues count is displayed
    });

    it('should display sponsor metrics correctly', () => {
      // TODO: Implement test
      // - Mock SponsorDashboardDTO with SponsorDashboardMetricsDTO
      // - Navigate to /sponsor/dashboard
      // - Verify metrics panel shows: totalImpressions, totalEngagement, activeSponsorships
      // - Check proper formatting and styling
    });

    it('should display sponsor investment information', () => {
      // TODO: Implement test
      // - Mock SponsorDashboardDTO with SponsorDashboardInvestmentDTO
      // - Navigate to /sponsor/dashboard
      // - Verify investment panel shows: totalInvested, monthlySpend, ROI
      // - Check for proper currency formatting
    });

    it('should display sponsored leagues list', () => {
      // TODO: Implement test
      // - Mock SponsorDashboardDTO with sponsoredLeagues array
      // - Navigate to /sponsor/dashboard
      // - Verify "Sponsored Leagues" section shows league data
      // - Check for leagueName, tier, status, startDate, endDate
    });

    it('should handle empty sponsored leagues list', () => {
      // TODO: Implement test
      // - Mock SponsorDashboardDTO with empty sponsoredLeagues
      // - Navigate to /sponsor/dashboard
      // - Verify "Sponsored Leagues" shows empty state message
    });

    it('should display recent activity feed', () => {
      // TODO: Implement test
      // - Mock SponsorDashboardDTO with recentActivity array
      // - Navigate to /sponsor/dashboard
      // - Verify "Recent Activity" panel shows activity items
      // - Check for type, headline, formattedTime
    });

    it('should handle empty activity feed', () => {
      // TODO: Implement test
      // - Mock SponsorDashboardDTO with empty recentActivity
      // - Navigate to /sponsor/dashboard
      // - Verify "Recent Activity" shows empty state message
    });

    it('should display upcoming renewals', () => {
      // TODO: Implement test
      // - Mock SponsorDashboardDTO with upcomingRenewals array
      // - Navigate to /sponsor/dashboard
      // - Verify "Upcoming Renewals" panel shows renewal alerts
      // - Check for entityName, renewalDate, daysUntil
    });

    it('should handle empty renewals list', () => {
      // TODO: Implement test
      // - Mock SponsorDashboardDTO with empty upcomingRenewals
      // - Navigate to /sponsor/dashboard
      // - Verify "Upcoming Renewals" shows empty state message
    });

    it('should handle sponsor dashboard data loading errors', () => {
      // TODO: Implement test
      // - Mock GetSponsorDashboardQueryParams to return error
      // - Navigate to /sponsor/dashboard
      // - Verify error handling (likely redirects to notFound)
      // - Check error logging
    });

    it('should handle sponsor access denied (403/401)', () => {
      // TODO: Implement test
      // - Mock API to return 403/401 error
      // - Navigate to /sponsor/dashboard
      // - Verify redirect to login or error page
    });

    it('should refresh sponsor dashboard data on page refresh', () => {
      // TODO: Implement test
      // - Login and navigate to /sponsor/dashboard
      // - Trigger browser refresh or router.refresh()
      // - Verify GetSponsorDashboardQueryParams is called again
      // - Verify data is reloaded
    });
  });

  describe('Sponsorship Management Flow', () => {
    it('should display list of sponsorships', () => {
      // TODO: Implement test
      // - Mock GetSponsorSponsorshipsQueryParams response with SponsorSponsorshipsDTO
      // - Navigate to /sponsor/campaigns
      // - Verify sponsorship list is displayed
      // - Check for sponsorship details (type, entityName, tier, status, dates)
    });

    it('should handle empty sponsorships list', () => {
      // TODO: Implement test
      // - Mock GetSponsorSponsorshipsQueryParams with empty sponsorships
      // - Navigate to /sponsor/campaigns
      // - Verify empty state message is shown
    });

    it('should filter sponsorships by status', () => {
      // TODO: Implement test
      // - Mock GetSponsorSponsorshipsQueryParams with multiple sponsorships
      // - Navigate to /sponsor/campaigns
      // - Click filter for "Active" status
      // - Verify only active sponsorships are shown
    });

    it('should filter sponsorships by type', () => {
      // TODO: Implement test
      // - Mock GetSponsorSponsorshipsQueryParams with multiple sponsorships
      // - Navigate to /sponsor/campaigns
      // - Click filter for "League" type
      // - Verify only league sponsorships are shown
    });

    it('should navigate to sponsorship detail page', () => {
      // TODO: Implement test
      // - Mock GetSponsorSponsorshipsQueryParams with sponsorships
      // - Navigate to /sponsor/campaigns
      // - Click on a sponsorship item
      // - Verify navigation to /sponsor/campaigns/[id]
    });

    it('should handle sponsorship application acceptance', () => {
      // TODO: Implement test
      // - Mock GetSponsorSponsorshipsQueryParams with pending sponsorship
      // - Navigate to /sponsor/campaigns
      // - Click "Accept" on pending sponsorship
      // - Mock AcceptSponsorshipRequestInputDTO
      // - Verify API call is made
      // - Verify sponsorship status updates to "active"
    });

    it('should handle sponsorship application rejection', () => {
      // TODO: Implement test
      // - Mock GetSponsorSponsorshipsQueryParams with pending sponsorship
      // - Navigate to /sponsor/campaigns
      // - Click "Reject" on pending sponsorship
      // - Mock RejectSponsorshipRequestInputDTO
      // - Verify API call is made
      // - Verify sponsorship status updates to "rejected"
    });

    it('should handle sponsorship cancellation', () => {
      // TODO: Implement test
      // - Mock GetSponsorSponsorshipsQueryParams with active sponsorship
      // - Navigate to /sponsor/campaigns
      // - Click "Cancel" on active sponsorship
      // - Verify confirmation dialog appears
      // - Confirm cancellation
      // - Verify sponsorship status updates to "cancelled"
    });
  });

  describe('Sponsored Leagues Flow', () => {
    it('should display list of sponsored leagues', () => {
      // TODO: Implement test
      // - Mock GetSponsorDashboardQueryParams response with sponsoredLeagues
      // - Navigate to /sponsor/leagues
      // - Verify league list is displayed
      // - Check for leagueName, tier, status, startDate, endDate
    });

    it('should handle empty sponsored leagues list', () => {
      // TODO: Implement test
      // - Mock GetSponsorDashboardQueryParams with empty sponsoredLeagues
      // - Navigate to /sponsor/leagues
      // - Verify empty state message is shown
    });

    it('should navigate to sponsored league detail page', () => {
      // TODO: Implement test
      // - Mock GetSponsorDashboardQueryParams with sponsoredLeagues
      // - Navigate to /sponsor/leagues
      // - Click on a league item
      // - Verify navigation to /sponsor/leagues/[id]
    });

    it('should display league detail information', () => {
      // TODO: Implement test
      // - Mock league detail response
      // - Navigate to /sponsor/leagues/[id]
      // - Verify league details are displayed (name, description, tier, status)
      // - Verify sponsorship details are shown
    });

    it('should display league sponsorship metrics', () => {
      // TODO: Implement test
      // - Mock league detail response with metrics
      // - Navigate to /sponsor/leagues/[id]
      // - Verify metrics are shown (impressions, engagement, ROI)
      // - Check for proper formatting
    });
  });

  describe('Sponsor Billing Flow', () => {
    it('should display billing information', () => {
      // TODO: Implement test
      // - Mock billing response
      // - Navigate to /sponsor/billing
      // - Verify billing details are displayed
      // - Check for payment methods, invoices, transaction history
    });

    it('should handle empty billing history', () => {
      // TODO: Implement test
      // - Mock empty billing response
      // - Navigate to /sponsor/billing
      // - Verify empty state message is shown
    });

    it('should allow adding payment method', () => {
      // TODO: Implement test
      // - Navigate to /sponsor/billing
      // - Click "Add Payment Method"
      // - Fill in payment details
      // - Verify API call is made
      // - Verify payment method is added to list
    });

    it('should display invoice details', () => {
      // TODO: Implement test
      // - Mock invoice response
      // - Navigate to /sponsor/billing
      // - Click on an invoice
      // - Verify invoice details are shown (amount, date, status, items)
    });

    it('should allow downloading invoice', () => {
      // TODO: Implement test
      // - Mock invoice response
      // - Navigate to /sponsor/billing
      // - Click "Download" on an invoice
      // - Verify download is triggered
    });
  });

  describe('Sponsor Settings Flow', () => {
    it('should display sponsor profile settings', () => {
      // TODO: Implement test
      // - Mock SponsorProfileDTO
      // - Navigate to /sponsor/settings
      // - Verify profile fields are displayed (name, contactEmail, websiteUrl, logoUrl)
    });

    it('should allow editing sponsor profile', () => {
      // TODO: Implement test
      // - Mock SponsorProfileDTO
      // - Navigate to /sponsor/settings
      // - Edit profile fields
      // - Click "Save"
      // - Verify API call is made
      // - Verify profile is updated
    });

    it('should handle profile validation errors', () => {
      // TODO: Implement test
      // - Navigate to /sponsor/settings
      // - Enter invalid data (e.g., invalid email format)
      // - Verify validation errors are shown
      // - Verify save button is disabled
    });

    it('should allow uploading sponsor logo', () => {
      // TODO: Implement test
      // - Navigate to /sponsor/settings
      // - Click "Upload Logo"
      // - Select image file
      // - Verify upload API call is made
      // - Verify logoUrl is updated
    });

    it('should handle logo upload errors', () => {
      // TODO: Implement test
      // - Navigate to /sponsor/settings
      // - Attempt to upload invalid file type
      // - Verify error message is shown
    });
  });

  describe('Sponsor Signup Flow', () => {
    it('should allow new sponsor registration', () => {
      // TODO: Implement test
      // - Navigate to /sponsor/signup
      // - Fill in signup form (name, email, password, etc.)
      // - Mock CreateSponsorOutputDTO
      // - Click "Sign Up"
      // - Verify API call is made
      // - Verify redirect to sponsor dashboard
    });

    it('should handle signup validation errors', () => {
      // TODO: Implement test
      // - Navigate to /sponsor/signup
      // - Submit form with missing required fields
      // - Verify validation errors are shown
      // - Verify form is not submitted
    });

    it('should handle signup with existing email', () => {
      // TODO: Implement test
      // - Navigate to /sponsor/signup
      // - Fill in form with existing email
      // - Click "Sign Up"
      // - Verify error message is shown
      // - Verify user is not created
    });

    it('should redirect authenticated sponsors from signup page', () => {
      // TODO: Implement test
      // - Mock existing AuthSessionDTO
      // - Navigate to /sponsor/signup
      // - Verify redirect to /sponsor/dashboard
    });
  });

  describe('Sponsor Route Guard Integration', () => {
    it('should enforce authentication on sponsor access', () => {
      // TODO: Implement test
      // - Navigate to /sponsor/dashboard without auth
      // - Verify redirect to /auth/login
      // - Check return URL includes /sponsor/dashboard
    });

    it('should handle session expiration during sponsor viewing', () => {
      // TODO: Implement test
      // - Login and navigate to /sponsor/dashboard
      // - Mock session expiration
      // - Attempt interaction (e.g., click "View Campaigns")
      // - Verify redirect to login
    });

    it('should maintain return URL after sponsor authentication', () => {
      // TODO: Implement test
      // - Attempt to access /sponsor/dashboard without auth
      // - Verify redirect to login with return URL
      // - Login successfully
      // - Verify redirect back to /sponsor/dashboard
    });

    it('should redirect authenticated sponsors away from auth pages', () => {
      // TODO: Implement test
      // - Mock existing AuthSessionDTO
      // - Navigate to /auth/login
      // - Verify redirect to /sponsor/dashboard
    });

    it('should enforce sponsor role on sponsor routes', () => {
      // TODO: Implement test
      // - Mock AuthSessionDTO with non-sponsor role
      // - Navigate to /sponsor/dashboard
      // - Verify redirect to appropriate error page or dashboard
    });
  });

  describe('Sponsor Cross-Screen State Management', () => {
    it('should preserve sponsor state when navigating away and back', () => {
      // TODO: Implement test
      // - Navigate to /sponsor/dashboard
      // - Navigate to another page (e.g., /sponsor/campaigns)
      // - Navigate back to /sponsor/dashboard
      // - Verify data is preserved or reloaded correctly
    });

    it('should handle concurrent sponsor operations', () => {
      // TODO: Implement test
      // - Navigate to /sponsor/dashboard
      // - Trigger multiple operations quickly (e.g., refresh, navigate)
      // - Verify loading states are managed
      // - Verify no race conditions
    });

    it('should maintain sponsor scroll position on return', () => {
      // TODO: Implement test
      // - Navigate to /sponsor/dashboard
      // - Scroll down
      // - Navigate to /sponsor/campaigns
      // - Navigate back to /sponsor/dashboard
      // - Verify scroll position is preserved
    });

    it('should preserve filter state across sponsor pages', () => {
      // TODO: Implement test
      // - Navigate to /sponsor/campaigns
      // - Apply filters (status, type)
      // - Navigate to /sponsor/leagues
      // - Navigate back to /sponsor/campaigns
      // - Verify filters are preserved
    });
  });

  describe('Sponsor UI State Management', () => {
    it('should show loading states during data operations', () => {
      // TODO: Implement test
      // - Mock delayed API responses
      // - Navigate to /sponsor/dashboard
      // - Verify loading state is shown
      // - Verify loading state is cleared after data loads
    });

    it('should handle empty states gracefully', () => {
      // TODO: Implement test
      // - Mock SponsorDashboardDTO with all empty arrays/nulls
      // - Navigate to /sponsor/dashboard
      // - Verify empty state messages are shown
      // - Verify UI remains functional
    });

    it('should handle error states gracefully', () => {
      // TODO: Implement test
      // - Mock various error scenarios
      // - Navigate to /sponsor/dashboard
      // - Verify error handling (redirects, error pages)
      // - Verify UI remains usable
    });

    it('should handle network connectivity issues', () => {
      // TODO: Implement test
      // - Mock network failure
      // - Navigate to /sponsor/dashboard
      // - Verify appropriate error handling
      // - Check if retry mechanism exists
    });
  });

  describe('Sponsor User Interaction Flows', () => {
    it('should navigate to campaigns when clicking view campaigns button', () => {
      // TODO: Implement test
      // - Navigate to /sponsor/dashboard
      // - Click "View Campaigns" button
      // - Verify navigation to /sponsor/campaigns
      // - Check URL changes correctly
    });

    it('should handle sponsorship item interactions', () => {
      // TODO: Implement test
      // - Mock GetSponsorSponsorshipsQueryParams with sponsorships
      // - Navigate to /sponsor/campaigns
      // - Click on a sponsorship item
      // - Verify navigation to sponsorship detail page
    });

    it('should handle league item interactions', () => {
      // TODO: Implement test
      // - Mock GetSponsorDashboardQueryParams with sponsoredLeagues
      // - Navigate to /sponsor/leagues
      // - Click on a league item
      // - Verify navigation to league detail page
    });

    it('should handle renewal alert interactions', () => {
      // TODO: Implement test
      // - Mock SponsorDashboardDTO with upcomingRenewals
      // - Navigate to /sponsor/dashboard
      // - Click on a renewal alert
      // - Verify navigation to relevant sponsorship or league
    });
  });

  describe('Sponsor Performance and Edge Cases', () => {
    it('should handle large amounts of sponsorships', () => {
      // TODO: Implement test
      // - Mock GetSponsorSponsorshipsQueryParams with many sponsorships
      // - Navigate to /sponsor/campaigns
      // - Verify UI handles large list (virtualization, performance)
      // - Check rendering performance
    });

    it('should handle large amounts of sponsored leagues', () => {
      // TODO: Implement test
      // - Mock GetSponsorDashboardQueryParams with many sponsoredLeagues
      // - Navigate to /sponsor/leagues
      // - Verify UI handles large list
      // - Check rendering performance
    });

    it('should handle malformed sponsor data', () => {
      // TODO: Implement test
      // - Mock API with malformed data
      // - Navigate to /sponsor/dashboard
      // - Verify graceful error handling
      // - Check error logging
    });

    it('should handle sponsor data with special characters', () => {
      // TODO: Implement test
      // - Mock SponsorDashboardDTO with special characters in strings
      // - Navigate to /sponsor/dashboard
      // - Verify proper rendering and escaping
    });

    it('should handle sponsor data with very long strings', () => {
      // TODO: Implement test
      // - Mock SponsorDashboardDTO with very long sponsor names, league names, etc.
      // - Navigate to /sponsor/dashboard
      // - Verify text truncation or wrapping works correctly
    });

    it('should handle sponsor data with null/undefined values', () => {
      // TODO: Implement test
      // - Mock SponsorDashboardDTO with null/undefined optional fields
      // - Navigate to /sponsor/dashboard
      // - Verify UI handles missing data gracefully
      // - Check for proper fallback values
    });
  });
});