package web

import (
	"bytes"
	"encoding/csv"
	"fmt"
	"log"
	"net/http"
	"regexp"
	"strconv"
	"strings"
	"sync"
	"time"

	root "marmic/servicetrade-toolbox"
	"marmic/servicetrade-toolbox/internal/api"
	"marmic/servicetrade-toolbox/internal/middleware"
	"marmic/servicetrade-toolbox/internal/utils"

	"github.com/gorilla/mux"
)

// RemovalResult represents the result of a single job removal
type RemovalResult struct {
	JobID        string
	FilesFound   int
	FilesRemoved int
	Success      bool
	ErrorMsg     string
	Files        []struct {
		Name    string
		Success bool
		Error   string
	}
}

// RemovalSession stores removal results for pagination
type RemovalSession struct {
	Results      []RemovalResult
	TotalJobs    int
	SuccessCount int
	ErrorCount   int
	TotalFiles   int
	TotalTime    time.Duration
	CreatedAt    time.Time
}

// Global map to store removal sessions (in production, use Redis or database)
var removalSessions = make(map[string]RemovalSession)

// DocumentRemoveHandler handles the document removal page
func DocumentRemoveHandler(w http.ResponseWriter, r *http.Request) {
	session, ok := r.Context().Value(middleware.SessionKey).(*api.Session)
	if !ok {
		http.Error(w, "Unauthorized", http.StatusUnauthorized)
		return
	}

	tmpl := root.WebTemplates
	data := map[string]interface{}{
		"Title":   "Document Removal",
		"Session": session,
		"DocumentTypes": []map[string]string{
			{"value": "1", "label": "Job Paperwork"},
			{"value": "2", "label": "Job Vendor Bill"},
			{"value": "7", "label": "Generic Attachment"},
			{"value": "10", "label": "Blank Paperwork"},
			{"value": "14", "label": "Job Invoice"},
		},
	}

	if r.Header.Get("HX-Request") == "true" {
		// For HTMX requests, just send the document_remove partial
		if err := tmpl.ExecuteTemplate(w, "document_remove", data); err != nil {
			log.Printf("Template execution error: %v", err)
			http.Error(w, "Internal Server Error", http.StatusInternalServerError)
			return
		}
	} else {
		// For full page requests, first render document_remove into a buffer
		var contentBuf bytes.Buffer
		if err := tmpl.ExecuteTemplate(&contentBuf, "document_remove", data); err != nil {
			log.Printf("Template execution error: %v", err)
			http.Error(w, "Internal Server Error", http.StatusInternalServerError)
			return
		}

		// Add the rendered content to the data for the layout
		data["BodyContent"] = contentBuf.String()

		// Now render the layout with our content
		if err := tmpl.ExecuteTemplate(w, "layout.html", data); err != nil {
			log.Printf("Template execution error: %v", err)
			http.Error(w, "Internal Server Error", http.StatusInternalServerError)
			return
		}
	}
}

// ProcessRemoveCSVHandler processes a CSV file containing job IDs for document removal
func ProcessRemoveCSVHandler(w http.ResponseWriter, r *http.Request) {
	// We don't use the session in the body but check it for auth
	_, ok := r.Context().Value(middleware.SessionKey).(*api.Session)
	if !ok {
		http.Error(w, "Unauthorized", http.StatusUnauthorized)
		return
	}

	// Check if the request method is POST
	if r.Method != http.MethodPost {
		http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
		return
	}

	// Parse the multipart form data with a 10MB limit
	if err := r.ParseMultipartForm(10 << 20); err != nil {
		http.Error(w, "Unable to parse form: "+err.Error(), http.StatusBadRequest)
		return
	}

	// Get the file from the form
	file, _, err := r.FormFile("csv")
	if err != nil {
		http.Error(w, "Error retrieving file: "+err.Error(), http.StatusBadRequest)
		return
	}
	defer file.Close()

	// Read the CSV data
	csvData, err := csv.NewReader(file).ReadAll()
	if err != nil {
		http.Error(w, "Error reading CSV file: "+err.Error(), http.StatusBadRequest)
		return
	}

	// Extract job IDs from CSV - first column only for simplicity
	var jobIDs []string
	for rowIndex, row := range csvData {
		// Skip header row if present
		if rowIndex == 0 && len(csvData) > 1 {
			// Check if first row looks like a header (non-numeric content)
			_, err := strconv.Atoi(strings.TrimSpace(row[0]))
			if err != nil {
				continue // Skip this row as it's likely a header
			}
		}

		if len(row) > 0 && row[0] != "" {
			jobID := strings.TrimSpace(row[0])
			if jobID != "" {
				jobIDs = append(jobIDs, jobID)
			}
		}
	}

	totalJobs := len(jobIDs)
	log.Printf("Extracted %d job IDs from CSV", totalJobs)

	if totalJobs == 0 {
		http.Error(w, "No valid job IDs found in the CSV file", http.StatusBadRequest)
		return
	}

	// Create a hidden input with the job IDs
	jobsValue := strings.Join(jobIDs, ",")

	// Generate HTML for the main response (hidden input for job-ids-removal-container)
	var responseHTML bytes.Buffer
	responseHTML.WriteString(fmt.Sprintf(`<input type="hidden" name="jobIDs" value="%s">`, jobsValue))
	responseHTML.WriteString(fmt.Sprintf(`<p>Found <strong>%d</strong> job(s) in the CSV file</p>`, totalJobs))

	// Generate out-of-band swap for the preview section - simplified version
	responseHTML.WriteString(fmt.Sprintf(`
		<div id="csv-preview-removal" class="fade-me-out csv-preview-active" hx-swap-oob="true">
			<h4>✓ Jobs Detected</h4>
			<p>Remove from <strong>%d</strong> job(s)</p>
		</div>
	`, totalJobs))

	// Send the response with the hidden input and preview
	w.Header().Set("Content-Type", "text/html")
	w.Write(responseHTML.Bytes())
}

// After the CSV is processed, a separate request should load job attachments
// This handler is for Step 2
func JobSelectionHandler(w http.ResponseWriter, r *http.Request) {
	// We don't use the session directly but check it for auth
	_, ok := r.Context().Value(middleware.SessionKey).(*api.Session)
	if !ok {
		http.Error(w, "Unauthorized", http.StatusUnauthorized)
		return
	}

	jobIDs := r.FormValue("jobIDs")
	if jobIDs == "" {
		http.Error(w, "No job IDs provided", http.StatusBadRequest)
		return
	}

	jobs := strings.Split(jobIDs, ",")
	if len(jobs) == 0 {
		http.Error(w, "No valid job IDs found", http.StatusBadRequest)
		return
	}

	var resultHTML bytes.Buffer
	resultHTML.WriteString("<div class=\"job-list-container\">")
	resultHTML.WriteString("<h4>Jobs from CSV</h4>")
	resultHTML.WriteString("<p>Click a job to view and manage its documents.</p>")
	resultHTML.WriteString("<div class=\"job-list\">")

	for _, jobID := range jobs {
		resultHTML.WriteString(fmt.Sprintf(`
			<div class="job-item">
				<a href="#job-%s" hx-get="/documents/remove/job/%s" hx-target="#job-%s-attachments"
					hx-swap="outerHTML" hx-trigger="click">
					Job ID: %s
				</a>
				<div id="job-%s-attachments"></div>
			</div>
		`, jobID, jobID, jobID, jobID, jobID))
	}

	resultHTML.WriteString("</div>") // End of job-list
	resultHTML.WriteString("</div>") // End of job-list-container

	w.Header().Set("Content-Type", "text/html")
	w.Write(resultHTML.Bytes())
}

// GetJobAttachmentsHandler retrieves attachments for a specific job
func GetJobAttachmentsHandler(w http.ResponseWriter, r *http.Request) {
	session, ok := r.Context().Value(middleware.SessionKey).(*api.Session)
	if !ok {
		vars := mux.Vars(r)
		jobID := vars["jobID"]
		renderErrorTemplate(w, "job_attachments", "You must be logged in to use this feature", jobID)
		return
	}

	vars := mux.Vars(r)
	jobID := vars["jobID"]
	if jobID == "" {
		renderErrorTemplate(w, "job_attachments", "Job ID is required", jobID)
		return
	}

	// Get attachments for the job
	attachments, err := session.GetJobAttachments(jobID)
	if err != nil {
		renderErrorTemplate(w, "job_attachments", fmt.Sprintf("Failed to get attachments: %v", err), jobID)
		return
	}

	tmpl := root.WebTemplates
	data := map[string]interface{}{
		"JobID":       jobID,
		"Attachments": attachments,
		"Session":     session,
	}

	if err := tmpl.ExecuteTemplate(w, "job_attachments", data); err != nil {
		log.Printf("Template execution error: %v", err)
		http.Error(w, "Internal Server Error", http.StatusInternalServerError)
		return
	}
}

// RemoveJobAttachmentsHandler handles the removal of attachments from a job
func RemoveJobAttachmentsHandler(w http.ResponseWriter, r *http.Request) {
	session, ok := r.Context().Value(middleware.SessionKey).(*api.Session)
	if !ok {
		vars := mux.Vars(r)
		jobID := vars["jobID"]
		renderErrorTemplate(w, "job_attachments", "You must be logged in to use this feature", jobID)
		return
	}

	vars := mux.Vars(r)
	jobID := vars["jobID"]
	if jobID == "" {
		renderErrorTemplate(w, "job_attachments", "Job ID is required", jobID)
		return
	}

	// Parse the form
	if err := r.ParseForm(); err != nil {
		renderErrorTemplate(w, "job_attachments", fmt.Sprintf("Error parsing form: %v", err), jobID)
		return
	}

	// Get the attachment IDs to remove
	attachmentIDs := r.PostForm["attachment_ids"]
	if len(attachmentIDs) == 0 {
		renderErrorTemplate(w, "job_attachments", "No attachments selected for deletion", jobID)
		return
	}

	// Process deletion with rate limiting (max 5 concurrent requests)
	results := struct {
		Success      bool
		SuccessCount int
		ErrorCount   int
		Files        []struct {
			Name    string
			Success bool
			Error   string
		}
	}{
		Success: true,
		Files: make([]struct {
			Name    string
			Success bool
			Error   string
		}, 0, len(attachmentIDs)),
	}

	// Set up rate limiting
	semaphore := make(chan struct{}, 5) // Allow 5 concurrent requests
	var wg sync.WaitGroup
	var mu sync.Mutex // Mutex for updating results

	for _, attachmentID := range attachmentIDs {
		wg.Add(1)
		semaphore <- struct{}{} // Acquire semaphore

		go func(id string) {
			defer wg.Done()
			defer func() { <-semaphore }() // Release semaphore

			// Get attachment info first to get the name
			attachmentInfo, err := session.GetAttachmentInfo(id)

			fileResult := struct {
				Name    string
				Success bool
				Error   string
			}{
				Name: fmt.Sprintf("Attachment ID: %s", id),
			}

			if err == nil {
				// Get description if available
				if description, ok := attachmentInfo["description"].(string); ok {
					fileResult.Name = description
				}
			}

			// For all attachment types, we'll use the attachment endpoint for deletion
			// The API endpoint is /attachment/{id} as defined in DeleteAttachment method
			log.Printf("Deleting attachment %s (ID: %s) using attachment endpoint", fileResult.Name, id)
			deleteErr := session.DeleteAttachment(id)

			mu.Lock()
			defer mu.Unlock()

			if deleteErr != nil {
				fileResult.Success = false
				fileResult.Error = deleteErr.Error()
				results.ErrorCount++
				results.Success = false
			} else {
				fileResult.Success = true
				results.SuccessCount++
			}

			results.Files = append(results.Files, fileResult)

			// Add a slight delay to avoid overwhelming the API
			time.Sleep(100 * time.Millisecond)
		}(attachmentID)
	}

	wg.Wait() // Wait for all deletions to complete

	tmpl := root.WebTemplates
	data := map[string]interface{}{
		"JobID":         jobID,
		"Session":       session,
		"SuccessCount":  results.SuccessCount,
		"ErrorCount":    results.ErrorCount,
		"JobsProcessed": 1,
		"Results": []map[string]interface{}{
			{
				"JobID":   jobID,
				"Success": results.Success,
				"Files":   results.Files,
			},
		},
	}

	// Generate HTML for results that will go to the removal_results div
	if err := tmpl.ExecuteTemplate(w, "removal_results", data); err != nil {
		log.Printf("Template execution error: %v", err)
		http.Error(w, "Internal Server Error", http.StatusInternalServerError)
		return
	}
}

// JobListHandler renders the job list for document removal
func JobListHandler(w http.ResponseWriter, r *http.Request) {
	session, ok := r.Context().Value(middleware.SessionKey).(*api.Session)
	if !ok {
		renderErrorTemplate(w, "job_list", "You must be logged in to use this feature")
		return
	}

	if err := r.ParseForm(); err != nil {
		renderErrorTemplate(w, "job_list", fmt.Sprintf("Error parsing form: %v", err))
		return
	}

	tmpl := root.WebTemplates
	data := map[string]interface{}{
		"JobIDs":  r.PostForm["job_ids"],
		"Session": session,
	}

	if err := tmpl.ExecuteTemplate(w, "job_list", data); err != nil {
		log.Printf("Template execution error: %v", err)
		http.Error(w, "Internal Server Error", http.StatusInternalServerError)
		return
	}
}

// Helper function to render error templates
func renderErrorTemplate(w http.ResponseWriter, templateName, errorMsg string, jobID ...string) {
	tmpl := root.WebTemplates
	data := map[string]interface{}{
		"Error": errorMsg,
	}

	if len(jobID) > 0 && jobID[0] != "" {
		data["JobID"] = jobID[0]
	}

	if err := tmpl.ExecuteTemplate(w, templateName, data); err != nil {
		log.Printf("Template execution error: %v", err)
		http.Error(w, "Internal Server Error", http.StatusInternalServerError)
	}
}

// BulkRemoveDocumentsHandler handles bulk removal of documents from multiple jobs
func BulkRemoveDocumentsHandler(w http.ResponseWriter, r *http.Request) {
	startTime := time.Now()

	if r.Method != http.MethodPost {
		http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
		return
	}

	session, ok := r.Context().Value(middleware.SessionKey).(*api.Session)
	if !ok {
		http.Error(w, "Unauthorized", http.StatusUnauthorized)
		return
	}

	// Parse the form
	if err := r.ParseForm(); err != nil {
		http.Error(w, fmt.Sprintf("Error parsing form: %v", err), http.StatusBadRequest)
		return
	}

	// Get job IDs from the form
	jobIDs := r.FormValue("jobIDs")
	if jobIDs == "" {
		http.Error(w, "No job IDs provided", http.StatusBadRequest)
		return
	}

	jobs := strings.Split(jobIDs, ",")
	if len(jobs) == 0 {
		http.Error(w, "No valid job IDs provided", http.StatusBadRequest)
		return
	}

	// Get document types to remove (optional)
	var docTypes []string
	if types := r.Form["documentTypes"]; len(types) > 0 {
		docTypes = types
		log.Printf("Filtering by document types: %v", docTypes)
	}

	// Get filename patterns to match (optional)
	var filenamePatterns []string
	if patterns := r.FormValue("filenamePatterns"); patterns != "" {
		filenamePatterns = strings.Split(patterns, ",")
		for i, p := range filenamePatterns {
			filenamePatterns[i] = strings.TrimSpace(p)
		}
		log.Printf("Filtering by filename patterns: %v", filenamePatterns)
	}

	// Get age filter (optional)
	var ageFilterDays int
	if ageStr := r.FormValue("age-filter"); ageStr != "" {
		if days, err := strconv.Atoi(ageStr); err == nil && days > 0 {
			ageFilterDays = days
			log.Printf("Using age filter: older than %d days", ageFilterDays)
		}
	}

	// Calculate cutoff date if using age filter
	var cutoffDate time.Time
	if ageFilterDays > 0 {
		cutoffDate = time.Now().AddDate(0, 0, -ageFilterDays)
		log.Printf("Cutoff date for age filter: %s", cutoffDate.Format("2006-01-02"))
	}

	// Structure to track results
	type BulkRemovalResult struct {
		JobsProcessed  int
		JobsWithErrors int
		TotalFiles     int
		SuccessCount   int
		ErrorCount     int
		Duration       time.Duration
		JobResults     []struct {
			JobID        string
			FilesFound   int
			FilesRemoved int
			Success      bool
			ErrorMsg     string
			Files        []struct {
				Name    string
				Success bool
				Error   string
			}
		}
	}

	results := BulkRemovalResult{}
	var wg sync.WaitGroup
	var mu sync.Mutex
	semaphore := make(chan struct{}, 5) // Increased back to 5 since we've optimized the overhead

	// Process each job
	for _, jobID := range jobs {
		wg.Add(1)
		go func(jobID string) {
			defer wg.Done()

			log.Printf("Processing job ID: %s for document removal", jobID)

			jobResult := struct {
				JobID        string
				FilesFound   int
				FilesRemoved int
				Success      bool
				ErrorMsg     string
				Files        []struct {
					Name    string
					Success bool
					Error   string
				}
			}{
				JobID:   jobID,
				Success: true,
				Files: []struct {
					Name    string
					Success bool
					Error   string
				}{},
			}

			// Check job permissions first
			hasAccess, reason, err := session.CheckJobPermissions(jobID)
			if err != nil {
				log.Printf("Error checking permissions for job %s: %v", jobID, err)
			} else if !hasAccess {
				log.Printf("No access to job %s: %s", jobID, reason)
				mu.Lock()
				jobResult.Success = false
				jobResult.ErrorMsg = fmt.Sprintf("Cannot access job: %s", reason)
				results.JobResults = append(results.JobResults, jobResult)
				results.JobsWithErrors++
				mu.Unlock()
				return
			}

			// Get attachments using the most reliable method first
			var attachments []map[string]interface{}

			// Try the specialized GetJobAttachments method first
			attachments, err = session.GetJobAttachments(jobID)
			if err != nil {
				log.Printf("Error getting attachments for job %s: %v", jobID, err)
				attachments = []map[string]interface{}{} // Ensure it's initialized
			}

			// If no attachments found, try the paperwork endpoint as fallback
			if len(attachments) == 0 {
				log.Printf("No attachments found via GetJobAttachments for job %s, trying paperwork endpoint", jobID)
				paperworkItems, err := session.GetJobPaperwork(jobID)
				if err != nil {
					log.Printf("Error getting paperwork for job %s: %v", jobID, err)
				} else {
					attachments = paperworkItems
				}
			}

			log.Printf("Found %d attachments for job %s", len(attachments), jobID)

			// Filter attachments based on criteria
			var attachmentsToDelete []map[string]interface{}
			for _, attachment := range attachments {
				// Get the attachment ID
				attachmentIDRaw, idOk := attachment["id"].(float64)
				if !idOk {
					continue
				}
				attachmentIDStr := fmt.Sprintf("%.0f", attachmentIDRaw)

				// Get filename from any available field
				var filename string
				if desc, ok := attachment["description"].(string); ok && desc != "" {
					filename = desc
				} else if name, ok := attachment["name"].(string); ok && name != "" {
					filename = name
				} else if fname, ok := attachment["fileName"].(string); ok && fname != "" {
					filename = fname
				} else {
					filename = fmt.Sprintf("Attachment ID: %s", attachmentIDStr)
				}

				// Check document type filter
				if len(docTypes) > 0 {
					typeMatches := false
					if purposeId, ok := attachment["purposeId"].(float64); ok {
						for _, docType := range docTypes {
							docTypeClean := strings.TrimLeft(docType, "0")
							if docTypeInt, err := strconv.Atoi(docTypeClean); err == nil {
								if float64(docTypeInt) == purposeId {
									typeMatches = true
									break
								}
							}
						}
					}
					if !typeMatches {
						continue
					}
				}

				// Check filename pattern
				if len(filenamePatterns) > 0 && !matchesAnyPattern(filename, filenamePatterns) {
					continue
				}

				// Check age filter if applicable
				if ageFilterDays > 0 {
					var createdAt time.Time
					var hasDate bool

					// Try to get the creation date
					if created, ok := attachment["createdOn"].(string); ok {
						if parsedTime, err := time.Parse(time.RFC3339, created); err == nil {
							createdAt = parsedTime
							hasDate = true
						}
					} else if created, ok := attachment["created"].(string); ok {
						if parsedTime, err := time.Parse(time.RFC3339, created); err == nil {
							createdAt = parsedTime
							hasDate = true
						}
					} else if createdVal, ok := attachment["created"].(float64); ok {
						createdAt = time.Unix(int64(createdVal), 0)
						hasDate = true
					}

					if hasDate && createdAt.After(cutoffDate) {
						continue // Skip if not old enough
					}
				}

				// This attachment matches all criteria
				attachmentsToDelete = append(attachmentsToDelete, attachment)
			}

			jobResult.FilesFound = len(attachmentsToDelete)

			// Process deletions with rate limiting
			var deletionWg sync.WaitGroup
			for _, attachment := range attachmentsToDelete {
				deletionWg.Add(1)
				attachmentCopy := attachment

				go func(att map[string]interface{}) {
					defer deletionWg.Done()

					semaphore <- struct{}{}
					defer func() { <-semaphore }()

					attachmentIDFloat := att["id"].(float64)
					attachmentIDStr := fmt.Sprintf("%.0f", attachmentIDFloat)

					var filename string
					if desc, ok := att["description"].(string); ok && desc != "" {
						filename = desc
					} else if name, ok := att["name"].(string); ok && name != "" {
						filename = name
					} else if fname, ok := att["fileName"].(string); ok && fname != "" {
						filename = fname
					} else {
						filename = fmt.Sprintf("Attachment ID: %s", attachmentIDStr)
					}

					fileResult := struct {
						Name    string
						Success bool
						Error   string
					}{
						Name: filename,
					}

					deleteErr := session.DeleteAttachment(attachmentIDStr)

					mu.Lock()
					defer mu.Unlock()

					if deleteErr != nil {
						fileResult.Success = false
						fileResult.Error = deleteErr.Error()
						jobResult.Success = false
					} else {
						fileResult.Success = true
						jobResult.FilesRemoved++
					}

					jobResult.Files = append(jobResult.Files, fileResult)

					// Reduced delay
					time.Sleep(200 * time.Millisecond)
				}(attachmentCopy)
			}

			deletionWg.Wait()

			mu.Lock()
			results.JobsProcessed++
			if jobResult.Success {
				results.SuccessCount += jobResult.FilesRemoved
			} else {
				results.ErrorCount += (jobResult.FilesFound - jobResult.FilesRemoved)
			}
			results.TotalFiles += jobResult.FilesFound
			results.JobResults = append(results.JobResults, jobResult)
			mu.Unlock()
		}(jobID)
	}

	// Wait for all jobs to complete
	wg.Wait()

	// Calculate total duration
	totalDuration := time.Since(startTime)
	results.Duration = totalDuration

	log.Printf("Document removal completed in %v", totalDuration)

	// Convert results to RemovalResult format for session storage
	var removalResults []RemovalResult
	for _, jobResult := range results.JobResults {
		removalResult := RemovalResult{
			JobID:        jobResult.JobID,
			FilesFound:   jobResult.FilesFound,
			FilesRemoved: jobResult.FilesRemoved,
			Success:      jobResult.Success,
			ErrorMsg:     jobResult.ErrorMsg,
			Files:        jobResult.Files,
		}
		removalResults = append(removalResults, removalResult)
	}

	// Store results in session for pagination
	sessionID := fmt.Sprintf("removal_%d", time.Now().UnixNano())
	removalSession := RemovalSession{
		Results:      removalResults,
		TotalJobs:    results.JobsProcessed,
		SuccessCount: results.SuccessCount,
		ErrorCount:   results.ErrorCount,
		TotalFiles:   results.TotalFiles,
		TotalTime:    totalDuration,
		CreatedAt:    time.Now(),
	}

	// Store in global map (in production, use Redis or database)
	removalSessions[sessionID] = removalSession

	// Get configurable page size from form, with fallback to default
	limitStr := r.FormValue("limit")
	limit := utils.DefaultPageSize
	if limitStr != "" {
		if parsedLimit, err := strconv.Atoi(limitStr); err == nil && parsedLimit > 0 {
			if parsedLimit > utils.MaxPageSize {
				limit = utils.MaxPageSize
			} else {
				limit = parsedLimit
			}
		}
	}

	// Return first page of results with configurable page size
	renderRemovalResultsPage(w, sessionID, utils.DefaultPage, limit)
}

// RemovalResultsHandler handles pagination for removal results
func RemovalResultsHandler(w http.ResponseWriter, r *http.Request) {
	sessionID := r.URL.Query().Get("session_id")
	if sessionID == "" {
		http.Error(w, "Session ID required", http.StatusBadRequest)
		return
	}

	page, _ := strconv.Atoi(r.URL.Query().Get("page"))
	if page < 1 {
		page = utils.DefaultPage
	}

	limit, _ := strconv.Atoi(r.URL.Query().Get("limit"))
	if limit < 1 {
		limit = utils.DefaultPageSize
	}

	renderRemovalResultsPage(w, sessionID, page, limit)
}

// renderRemovalResultsPage renders a paginated page of removal results
func renderRemovalResultsPage(w http.ResponseWriter, sessionID string, page, limit int) {
	removalSession, exists := removalSessions[sessionID]
	if !exists {
		http.Error(w, "Removal session not found", http.StatusNotFound)
		return
	}

	totalResults := len(removalSession.Results)
	pagination := utils.CalculatePagination(totalResults, page, limit)

	// Get results for this page
	startIndex := (pagination.CurrentPage - 1) * pagination.Limit
	endIndex := startIndex + pagination.Limit
	if endIndex > totalResults {
		endIndex = totalResults
	}
	pageResults := utils.GetPageResults(removalSession.Results, startIndex, endIndex)

	// Add pagination info to each job result for the template
	var resultsWithPagination []map[string]interface{}
	for _, jobResult := range pageResults {
		resultMap := map[string]interface{}{
			"JobID":        jobResult.JobID,
			"FilesFound":   jobResult.FilesFound,
			"FilesRemoved": jobResult.FilesRemoved,
			"Success":      jobResult.Success,
			"ErrorMsg":     jobResult.ErrorMsg,
			"Files":        jobResult.Files,
			"FilePage":     1, // Default to first file
			"TotalFiles":   len(jobResult.Files),
			"SessionID":    sessionID,
		}
		resultsWithPagination = append(resultsWithPagination, resultMap)
	}

	data := map[string]interface{}{
		"Results":      resultsWithPagination,
		"TotalJobs":    removalSession.TotalJobs,
		"SuccessCount": removalSession.SuccessCount,
		"ErrorCount":   removalSession.ErrorCount,
		"TotalFiles":   removalSession.TotalFiles,
		"TotalTime":    removalSession.TotalTime,
		"TotalResults": pagination.TotalResults,
		"TotalPages":   pagination.TotalPages,
		"CurrentPage":  pagination.CurrentPage,
		"Limit":        pagination.Limit,
		"StartIndex":   pagination.StartIndex,
		"EndIndex":     pagination.EndIndex,
		"StartPage":    pagination.StartPage,
		"EndPage":      pagination.EndPage,
		"SessionID":    sessionID,
	}

	tmpl := root.WebTemplates
	if err := tmpl.ExecuteTemplate(w, "removal_results", data); err != nil {
		log.Printf("Template execution error: %v", err)
		// Don't call http.Error here as the response may have already started
		// Just log the error and return
		return
	}
}

// Helper function to check if a string matches any pattern in a slice
func matchesAnyPattern(s string, patterns []string) bool {
	// Convert the string to lowercase for case-insensitive comparison
	sLower := strings.ToLower(s)

	for _, pattern := range patterns {
		// Check if the pattern is a wildcard pattern (contains *)
		if strings.Contains(pattern, "*") {
			// Convert wildcard pattern to regex
			regexPattern := strings.ReplaceAll(pattern, "*", ".*")
			match, _ := regexp.MatchString("(?i)^"+regexPattern+"$", s)
			if match {
				return true
			}
		} else {
			// For non-wildcard patterns, check for exact match (case-insensitive)
			if sLower == strings.ToLower(pattern) {
				return true
			}
		}
	}
	return false
}

// New handler: Serve a single job card with only one file (per-job file pagination)
func RemovalJobFileHandler(w http.ResponseWriter, r *http.Request) {
	sessionID := r.URL.Query().Get("session_id")
	jobID := r.URL.Query().Get("job_id")
	filePageStr := r.URL.Query().Get("file_page")
	filePage := 1
	if filePageStr != "" {
		if parsed, err := strconv.Atoi(filePageStr); err == nil && parsed > 0 {
			filePage = parsed
		}
	}

	removalSession, exists := removalSessions[sessionID]
	if !exists {
		http.Error(w, "Removal session not found", http.StatusNotFound)
		return
	}

	// Find the job result
	var jobResult *RemovalResult
	for i := range removalSession.Results {
		if removalSession.Results[i].JobID == jobID {
			jobResult = &removalSession.Results[i]
			break
		}
	}
	if jobResult == nil {
		http.Error(w, "Job not found in session", http.StatusNotFound)
		return
	}

	totalFiles := len(jobResult.Files)
	if totalFiles == 0 {
		// No files to show
		data := map[string]interface{}{
			"JobID":        jobResult.JobID,
			"FilesFound":   jobResult.FilesFound,
			"FilesRemoved": jobResult.FilesRemoved,
			"Success":      jobResult.Success,
			"ErrorMsg":     jobResult.ErrorMsg,
			"Files":        nil,
			"FilePage":     1,
			"TotalFiles":   0,
			"SessionID":    sessionID,
		}

		tmpl := root.WebTemplates
		if err := tmpl.ExecuteTemplate(w, "removal_result_card", data); err != nil {
			log.Printf("Template execution error: %v", err)
			return
		}
		return
	}

	// Ensure filePage is within bounds
	if filePage > totalFiles {
		filePage = totalFiles
	}
	if filePage < 1 {
		filePage = 1
	}

	// Create a copy of the job result with only the requested file
	jobResultCopy := RemovalResult{
		JobID:        jobResult.JobID,
		FilesFound:   jobResult.FilesFound,
		FilesRemoved: jobResult.FilesRemoved,
		Success:      jobResult.Success,
		ErrorMsg:     jobResult.ErrorMsg,
		Files: []struct {
			Name    string
			Success bool
			Error   string
		}{jobResult.Files[filePage-1]},
	}

	// Add pagination info for the template
	data := map[string]interface{}{
		"JobID":        jobResultCopy.JobID,
		"FilesFound":   jobResultCopy.FilesFound,
		"FilesRemoved": jobResultCopy.FilesRemoved,
		"Success":      jobResultCopy.Success,
		"ErrorMsg":     jobResultCopy.ErrorMsg,
		"Files":        jobResultCopy.Files,
		"FilePage":     filePage,
		"TotalFiles":   totalFiles,
		"SessionID":    sessionID,
	}

	tmpl := root.WebTemplates
	if err := tmpl.ExecuteTemplate(w, "removal_result_card", data); err != nil {
		log.Printf("Template execution error: %v", err)
		return
	}
}