import { z } from "zod";
import { COOKIE_NAME } from "@shared/const";

interface Condition {
  field: string;
  operator: string;
  value: string;
}

interface Actions {
  typeAchat?: string;
  serviceConcerne?: string;
  ventilationComptable?: string;
}
import { getSessionCookieOptions } from "./_core/cookies";
import { systemRouter } from "./_core/systemRouter";
import { publicProcedure, protectedProcedure, router } from "./_core/trpc";
import {
  createInvoice,
  getInvoiceById,
  getInvoicesByUser,
  updateInvoice,
  deleteInvoice,
  searchInvoices,
  getInvoiceStats,
  createSourceFile,
  getSourceFileById,
  updateSourceFile,
  getUserSettings,
  upsertUserSettings,
  createLocalUser,
  getAllUsers,
  updateUserPassword,
  toggleUserActive,
  deleteUser,
  findDuplicateInvoice,
  createImportLog,
  getImportLogsByUser,
  deleteAllImportLogs,
  getLlmLogsBySourceFile,
  getLlmLogsByInvoice,
  getImportSettingsByUser,
  upsertImportSettings,
  getDepartmentsByUser,
  createDepartment,
  deleteDepartment,
  getAccountingAllocationsByUser,
  createAccountingAllocation,
  deleteAccountingAllocation,
  initializeDefaultLists,
  getLlmFieldsConfigByUser,
  upsertLlmFieldConfig,
  initializeDefaultLlmFields,
  getAutomationRulesByUser,
  getAutomationRuleById,
  createAutomationRule,
  updateAutomationRule,
  deleteAutomationRule,
} from "./db";
import { loginLocal, hashPassword, getAzureAuthUrl, isAzureAdConfigured, generateToken } from "./auth";
import { extractInvoicesWithMistral, generateMetadataJSON } from "./invoiceExtractor";
import { localStoragePut, generateStorageKey } from "./localStorage";
import { testSftpConnection, exportInvoiceToSftp, getUserSftpConfig } from "./sftpExport";
import { startEmailImportService, stopEmailImportService, isEmailImportServiceRunning, triggerEmailCheck } from "./emailImportService";
import { startFolderImportService, stopFolderImportService, isFolderImportServiceRunning } from "./folderImportService";
import { TRPCError } from "@trpc/server";

// Admin-only procedure
const adminProcedure = protectedProcedure.use(({ ctx, next }) => {
  if (ctx.user.role !== "admin") {
    throw new TRPCError({ code: "FORBIDDEN", message: "Admin access required" });
  }
  return next({ ctx });
});

export const appRouter = router({
  system: systemRouter,
  
  // ============= AUTH ROUTES =============
  auth: router({
    me: publicProcedure.query(opts => opts.ctx.user),
    
    // Local login (email + password)
    loginLocal: publicProcedure
      .input(z.object({
        email: z.string().email(),
        password: z.string().min(6),
      }))
      .mutation(async ({ input, ctx }) => {
        const result = await loginLocal(input.email, input.password);
        
        if (!result) {
          throw new TRPCError({ code: "UNAUTHORIZED", message: "Invalid email or password" });
        }
        
        // Set auth cookie
        ctx.res.cookie("auth_token", result.token, {
          httpOnly: true,
          secure: false, // Désactivé pour VPS sans HTTPS
          sameSite: "lax",
          path: "/",
          maxAge: 7 * 24 * 60 * 60 * 1000, // 7 days
        });
        
        return { user: result.user };
      }),
    
    // Get Azure AD login URL
    getAzureLoginUrl: publicProcedure.query(async () => {
      if (!isAzureAdConfigured()) {
        throw new TRPCError({ code: "BAD_REQUEST", message: "Azure AD not configured" });
      }
      
      const url = await getAzureAuthUrl();
      return { url };
    }),
    
    // Check if Azure AD is available
    isAzureAdAvailable: publicProcedure.query(() => {
      return { available: isAzureAdConfigured() };
    }),
    
    logout: publicProcedure.mutation(({ ctx }) => {
      const cookieOptions = getSessionCookieOptions(ctx.req);
      ctx.res.clearCookie(COOKIE_NAME, { ...cookieOptions, maxAge: -1 });
      ctx.res.clearCookie("auth_token", { path: "/", maxAge: -1 });
      return { success: true };
    }),
  }),
  
  // ============= INVOICE ROUTES =============
  invoices: router({
    // Upload and process PDF file
    upload: protectedProcedure
      .input(z.object({
        fileName: z.string(),
        fileData: z.string(), // Base64 encoded PDF
      }))
      .mutation(async ({ input, ctx }) => {
        const userId = ctx.user.id;
        
        // Decode base64 file data
        const fileBuffer = Buffer.from(input.fileData, "base64");
        console.log(`[Upload] Received file: ${input.fileName}, size: ${fileBuffer.length} bytes`);
        
        // Store source file
        const sourceFileKey = generateStorageKey(userId, input.fileName);
        console.log(`[Upload] Generated storage key: ${sourceFileKey}`);
        
        let sourceFileUrl: string;
        try {
          const result = await localStoragePut(sourceFileKey, fileBuffer, "application/pdf");
          sourceFileUrl = result.url;
          console.log(`[Upload] File stored successfully at: ${sourceFileUrl}`);
        } catch (error) {
          console.error(`[Upload] FAILED to store file:`, error);
          throw new TRPCError({ code: "INTERNAL_SERVER_ERROR", message: "Failed to store PDF file" });
        }
        
        // Create source file record
        const sourceFile = await createSourceFile({
          userId,
          fileName: input.fileName,
          fileKey: sourceFileKey,
          fileUrl: sourceFileUrl,
          processingStatus: "processing",
        });
        
        // Start extraction process (async - don't wait)
        (async () => {
          try {
            // Get user settings for custom keywords
            const settings = await getUserSettings(userId);
            const customKeywords = settings ? {
              invoiceNumber: settings.invoiceNumberKeywords,
              deliveryNote: settings.deliveryNoteKeywords,
              orderNumber: settings.orderNumberKeywords,
              supplier: settings.supplierKeywords,
              totalAmount: settings.totalAmountKeywords,
              subscription: settings.subscriptionKeywords,
            } : undefined;
            
            const model = settings?.llmModel || "mistral-large-latest";
            
            // Extract invoices
            const result = await extractInvoicesWithMistral(
              fileBuffer,
              userId,
              sourceFile.id,
              model,
              customKeywords
            );
            
            // Update source file with total count
            await updateSourceFile(sourceFile.id, {
              totalInvoicesDetected: result.invoiceCount,
              processingProgress: `Extraction ${result.invoiceCount} facture(s) détectée(s)`,
            });
            
            // Process each invoice
            let importedCount = 0;
            let duplicatesCount = 0;
            let errorsCount = 0;
            const duplicateDetails: any[] = [];
            const errorDetails: any[] = [];
            
            for (let i = 0; i < result.invoices.length; i++) {
              const invoiceData = result.invoices[i]!;
              
              try {
                // Update progress
                await updateSourceFile(sourceFile.id, {
                  processingProgress: `Extraction ${i + 1}/${result.invoiceCount} factures...`,
                });
                
                // Check for duplicates
                const duplicate = await findDuplicateInvoice(
                  invoiceData.supplierName,
                  invoiceData.invoiceNumber,
                  invoiceData.invoiceDate
                );
                
                if (duplicate) {
                  duplicatesCount++;
                  duplicateDetails.push({
                    supplierName: invoiceData.supplierName,
                    invoiceNumber: invoiceData.invoiceNumber,
                    invoiceDate: invoiceData.invoiceDate,
                  });
                  continue;
                }
                
                // Generate metadata JSON
                const metadataJson = generateMetadataJSON(invoiceData);
                const metadataKey = generateStorageKey(userId, `${input.fileName}-${i + 1}-metadata.json`);
                const { url: metadataUrl } = await localStoragePut(
                  metadataKey,
                  Buffer.from(metadataJson),
                  "application/json"
                );
                
                // Create invoice record
                const newInvoice = await createInvoice({
                  userId,
                  sourceFileId: sourceFile.id,
                  invoiceIndexInFile: i + 1,
                  fileName: `${input.fileName} - Facture ${i + 1}`,
                  fileKey: sourceFileKey, // Same as source for now
                  fileUrl: sourceFileUrl,
                  supplierName: invoiceData.supplierName,
                  invoiceNumber: invoiceData.invoiceNumber,
                  invoiceDate: invoiceData.invoiceDate,
                  deliveryNoteNumber: invoiceData.deliveryNoteNumber,
                  orderNumber: invoiceData.orderNumber,
                  totalAmount: invoiceData.totalAmount?.toString(),
                  pageRange: invoiceData.pageRange,
                  qualityScore: invoiceData.qualityScore,
                  extractedText: invoiceData.extractedText,
                  isSubscription: invoiceData.isSubscription ? 1 : 0,
                  metadataFileKey: metadataKey,
                  metadataFileUrl: metadataUrl,
                  status: "completed",
                });
                
                // Apply automation rules to the newly created invoice
                try {
                  const { applyAutomationRules } = await import("./automationEngine");
                  const automationUpdates = await applyAutomationRules(userId, newInvoice);
                  
                  // If automation rules suggest updates, apply them
                  if (Object.keys(automationUpdates).length > 0) {
                    await updateInvoice(newInvoice.id, automationUpdates);
                  }
                } catch (autoError) {
                  console.error("[Automation] Error applying rules:", autoError);
                  // Don't fail the import if automation fails
                }
                
                importedCount++;
              } catch (error: any) {
                errorsCount++;
                errorDetails.push({
                  invoiceIndex: i + 1,
                  error: error.message,
                });
              }
            }
            
            // Update source file status
            await updateSourceFile(sourceFile.id, {
              processingStatus: "completed",
              processingProgress: `Terminé: ${importedCount} importée(s), ${duplicatesCount} doublon(s)`,
            });
            
            // Create import log
            await createImportLog({
              userId,
              sourceFileId: sourceFile.id,
              fileName: input.fileName,
              totalInvoicesDetected: result.invoiceCount,
              invoicesImported: importedCount,
              duplicatesIgnored: duplicatesCount,
              errors: errorsCount,
              duplicateDetails: JSON.stringify(duplicateDetails),
              errorDetails: JSON.stringify(errorDetails),
            });
            
          } catch (error: any) {
            console.error("[Upload] Extraction failed:", error);
            // Limit error message to 200 characters to avoid database field overflow
            const errorMsg = error.message ? String(error.message).substring(0, 200) : "Erreur inconnue";
            await updateSourceFile(sourceFile.id, {
              processingStatus: "error",
              processingProgress: `Erreur: ${errorMsg}`,
            });
          }
        })();
        
        return { sourceFileId: sourceFile.id };
      }),
    
    list: protectedProcedure.query(async ({ ctx }) => {
      return getInvoicesByUser(ctx.user.id);
    }),
    
    getById: protectedProcedure
      .input(z.object({ id: z.number() }))
      .query(async ({ input, ctx }) => {
        const invoice = await getInvoiceById(input.id);
        if (!invoice || invoice.userId !== ctx.user.id) {
          throw new TRPCError({ code: "NOT_FOUND" });
        }
        return invoice;
      }),
    
    update: protectedProcedure
      .input(z.object({
        id: z.number(),
        data: z.object({
          supplierName: z.string().optional(),
          invoiceNumber: z.string().optional(),
          invoiceDate: z.date().optional(),
          deliveryNoteNumber: z.string().optional(),
          orderNumber: z.string().optional(),
          totalAmount: z.string().optional(),
          serviceConcerne: z.string().optional(),
          typeAchat: z.enum(["CAPEX", "OPEX"]).optional(),
          ventilationComptable: z.string().optional(),
          isSubscription: z.number().min(0).max(1).optional(),
          autoFilledFields: z.string().nullable().optional(),
        }),
      }))
      .mutation(async ({ input, ctx }) => {
        const invoice = await getInvoiceById(input.id);
        if (!invoice || invoice.userId !== ctx.user.id) {
          throw new TRPCError({ code: "NOT_FOUND" });
        }
        
        await updateInvoice(input.id, {
          ...input.data,
          manuallyEdited: 1,
        });
        
        return { success: true };
      }),
    
    delete: protectedProcedure
      .input(z.object({ id: z.number() }))
      .mutation(async ({ input, ctx }) => {
        const invoice = await getInvoiceById(input.id);
        if (!invoice || invoice.userId !== ctx.user.id) {
          throw new TRPCError({ code: "NOT_FOUND" });
        }
        
        await deleteInvoice(input.id);
        return { success: true };
      }),
    
    search: protectedProcedure
      .input(z.object({ query: z.string() }))
      .query(async ({ input, ctx }) => {
        return searchInvoices(ctx.user.id, input.query);
      }),
    
    getStats: protectedProcedure.query(async ({ ctx }) => {
      return getInvoiceStats(ctx.user.id);
    }),
  }),
  
  // ============= SOURCE FILES ROUTES =============
  sourceFiles: router({
    getByIds: protectedProcedure
      .input(z.object({ ids: z.array(z.number()) }))
      .query(async ({ input, ctx }) => {
        const files = await Promise.all(
          input.ids.map(id => getSourceFileById(id))
        );
        return files.filter(f => f && f.userId === ctx.user.id);
      }),
  }),
  
  // ============= SETTINGS ROUTES =============
  settings: router({
    get: protectedProcedure.query(async ({ ctx }) => {
      return getUserSettings(ctx.user.id);
    }),
    
    upsert: protectedProcedure
      .input(z.object({
        llmModel: z.string().optional(),
        orderNumberFormat: z.string().optional(),
        invoiceNumberKeywords: z.string().optional(),
        deliveryNoteKeywords: z.string().optional(),
        orderNumberKeywords: z.string().optional(),
        supplierKeywords: z.string().optional(),
        totalAmountKeywords: z.string().optional(),
        subscriptionKeywords: z.string().optional(),
        sftpHost: z.string().optional(),
        sftpPort: z.number().optional(),
        sftpUsername: z.string().optional(),
        sftpPassword: z.string().optional(),
        sftpRemotePath: z.string().optional(),
        sftpAutoExport: z.number().optional(),
        llmLogsRetentionMonths: z.number().optional(),
      }))
      .mutation(async ({ input, ctx }) => {
        await upsertUserSettings({
          userId: ctx.user.id,
          ...input,
        });
        return { success: true };
      }),
  }),
  
  // ============= ADMIN ROUTES =============
  admin: router({
    createUser: adminProcedure
      .input(z.object({
        email: z.string().email(),
        password: z.string().min(6),
        name: z.string(),
        role: z.enum(["user", "admin"]),
      }))
      .mutation(async ({ input }) => {
        const passwordHash = await hashPassword(input.password);
        const user = await createLocalUser(input.email, passwordHash, input.name, input.role);
        return { user };
      }),
    
    getAllUsers: adminProcedure.query(async () => {
      return getAllUsers();
    }),
    
    updateUserPassword: adminProcedure
      .input(z.object({
        userId: z.number(),
        newPassword: z.string().min(6),
      }))
      .mutation(async ({ input }) => {
        const passwordHash = await hashPassword(input.newPassword);
        await updateUserPassword(input.userId, passwordHash);
        return { success: true };
      }),
    
    toggleUserActive: adminProcedure
      .input(z.object({
        userId: z.number(),
        isActive: z.number(),
      }))
      .mutation(async ({ input }) => {
        await toggleUserActive(input.userId, input.isActive);
        return { success: true };
      }),
    
    deleteUser: adminProcedure
      .input(z.object({ userId: z.number() }))
      .mutation(async ({ input }) => {
        await deleteUser(input.userId);
        return { success: true };
      }),
  }),
  
  // ============= SFTP ROUTES =============
  sftp: router({
    testConnection: protectedProcedure.mutation(async ({ ctx }) => {
      const config = await getUserSftpConfig(ctx.user.id);
      if (!config) {
        throw new TRPCError({ code: "BAD_REQUEST", message: "SFTP not configured" });
      }
      
      const success = await testSftpConnection(config);
      return { success };
    }),
    
    exportToExcel: protectedProcedure
      .input(z.object({ invoiceIds: z.array(z.number()) }))
      .mutation(async ({ input, ctx }) => {
        const invoices = await Promise.all(
          input.invoiceIds.map(id => getInvoiceById(id))
        );
        
        const validInvoices = invoices.filter(
          inv => inv && inv.userId === ctx.user.id
        );
        
        // Return invoice data for Excel generation on client side
        return {
          success: true,
          invoices: validInvoices.map(inv => ({
            id: inv!.id,
            supplierName: inv!.supplierName || '',
            invoiceNumber: inv!.invoiceNumber || '',
            invoiceDate: inv!.invoiceDate ? new Date(inv!.invoiceDate).toLocaleDateString('fr-FR') : '',
            deliveryNoteNumber: inv!.deliveryNoteNumber || '',
            orderNumber: inv!.orderNumber || '',
            totalAmount: inv!.totalAmount ? parseFloat(inv!.totalAmount as string) : 0,
            qualityScore: inv!.qualityScore || 0,
            exportStatus: inv!.exportStatus || 'not_exported',
            exportedAt: inv!.exportedAt ? new Date(inv!.exportedAt).toLocaleDateString('fr-FR') : '',
            createdAt: new Date(inv!.createdAt).toLocaleDateString('fr-FR'),
          }))
        };
      }),
    
    exportToPdf: protectedProcedure
      .input(z.object({ invoiceIds: z.array(z.number()) }))
      .mutation(async ({ input, ctx }) => {
        const fs = await import('fs/promises');
        const path = await import('path');
        
        // Get export folder from settings
        const settings = await getImportSettingsByUser(ctx.user.id);
        const exportFolder = settings?.exportFolder;
        
        if (!exportFolder) {
          throw new TRPCError({ 
            code: "BAD_REQUEST", 
            message: "Le dossier d'export n'est pas configuré. Veuillez le définir dans les paramètres de réception." 
          });
        }
        
        // Validate that all invoices have quality score of 100
        const invoices = await Promise.all(
          input.invoiceIds.map(id => getInvoiceById(id))
        );
        
        const invalidInvoices = invoices.filter(
          inv => !inv || inv.userId !== ctx.user.id || (inv.qualityScore || 0) < 100
        );
        
        if (invalidInvoices.length > 0) {
          throw new TRPCError({ 
            code: "BAD_REQUEST", 
            message: "Toutes les factures doivent avoir un score de qualité de 100% pour être exportées" 
          });
        }
        
        // Create export folder if it doesn't exist
        try {
          await fs.mkdir(exportFolder, { recursive: true });
        } catch (error) {
          console.error('Error creating export folder:', error);
          throw new TRPCError({ 
            code: "INTERNAL_SERVER_ERROR", 
            message: `Impossible de créer le dossier d'export: ${exportFolder}` 
          });
        }
        
        // Copy PDFs to export folder
        const copiedFiles: string[] = [];
        const errors: string[] = [];
        const STORAGE_BASE_PATH = process.env.STORAGE_BASE_PATH || path.join(process.cwd(), "storage");
        
        for (const invoice of invoices) {
          if (invoice && invoice.fileKey) {
            try {
              // Build source path from fileKey
              const sourcePath = path.join(STORAGE_BASE_PATH, invoice.fileKey);
              
              // Extract filename from fileKey
              const filename = path.basename(invoice.fileKey);
              const destPath = path.join(exportFolder, filename);
              
              // Copy file
              await fs.copyFile(sourcePath, destPath);
              copiedFiles.push(destPath);
              
              // Update export status
              await updateInvoice(invoice.id, {
                exportStatus: "exported",
                exportedAt: new Date(),
                exportMode: "manual",
              });
            } catch (error: any) {
              console.error(`Error copying file for invoice ${invoice.id}:`, error);
              errors.push(`${invoice.supplierName || 'Inconnu'} (${invoice.invoiceNumber || 'N/A'}): ${error.message}`);
              
              // Update export status to error
              await updateInvoice(invoice.id, {
                exportStatus: "export_error",
                exportMode: "manual",
              });
            }
          }
        }
        
        if (errors.length > 0) {
          throw new TRPCError({ 
            code: "INTERNAL_SERVER_ERROR", 
            message: `Erreurs lors de l'export:\n${errors.join('\n')}` 
          });
        }
        
        return {
          success: true,
          exportFolder,
          copiedCount: copiedFiles.length,
          invoices: invoices.filter(Boolean).map(inv => ({
            id: inv!.id,
            supplierName: inv!.supplierName,
            invoiceNumber: inv!.invoiceNumber,
            invoiceDate: inv!.invoiceDate,
          }))
        };
      }),
    
    exportInvoices: protectedProcedure
      .input(z.object({ invoiceIds: z.array(z.number()) }))
      .mutation(async ({ input, ctx }) => {
        const config = await getUserSftpConfig(ctx.user.id);
        if (!config) {
          throw new TRPCError({ code: "BAD_REQUEST", message: "SFTP not configured" });
        }
        
        let successCount = 0;
        let errorCount = 0;
        
        for (const invoiceId of input.invoiceIds) {
          try {
            const invoice = await getInvoiceById(invoiceId);
            if (!invoice || invoice.userId !== ctx.user.id) {
              errorCount++;
              continue;
            }
            
            await exportInvoiceToSftp(
              config,
              invoice.fileKey,
              invoice.metadataFileKey,
              invoice.invoiceDate || new Date()
            );
            
            // Update invoice export status
            await updateInvoice(invoiceId, {
              exportedAt: new Date(),
              exportMode: "manual",
            });
            
            successCount++;
          } catch (error) {
            console.error(`[SFTP] Failed to export invoice ${invoiceId}:`, error);
            errorCount++;
          }
        }
        
        return { successCount, errorCount };
      }),
  }),
  
  // ============= IMPORT LOGS ROUTES =============
  importLogs: router({
    getByUser: protectedProcedure.query(async ({ ctx }) => {
      return getImportLogsByUser(ctx.user.id);
    }),
    
    deleteAll: protectedProcedure.mutation(async ({ ctx }) => {
      await deleteAllImportLogs(ctx.user.id);
      return { success: true };
    }),
  }),
  
  // ============= LLM LOGS ROUTES =============
  llmLogs: router({
    getBySourceFile: protectedProcedure
      .input(z.object({ sourceFileId: z.number() }))
      .query(async ({ input }) => {
        return getLlmLogsBySourceFile(input.sourceFileId);
      }),
    
    getByInvoice: protectedProcedure
      .input(z.object({ invoiceId: z.number() }))
      .query(async ({ input }) => {
        return getLlmLogsByInvoice(input.invoiceId);
      }),
  }),
  
  // ============= FOLDER IMPORT SERVICE ROUTES =============
  folderImportService: router({    
    start: protectedProcedure.mutation(async ({ ctx }) => {
      const started = await startFolderImportService(ctx.user.id);
      return { success: started };
    }),
    
    stop: protectedProcedure.mutation(async ({ ctx }) => {
      stopFolderImportService(ctx.user.id);
      return { success: true };
    }),
    
    status: protectedProcedure.query(async ({ ctx }) => {
      const isRunning = isFolderImportServiceRunning(ctx.user.id);
      return { isRunning };
    }),
  }),
  
  // ============= EMAIL IMPORT SERVICE ROUTES =============
  emailImportService: router({    
    start: protectedProcedure.mutation(async ({ ctx }) => {
      const started = await startEmailImportService(ctx.user.id);
      return { success: started };
    }),
    
    stop: protectedProcedure.mutation(async ({ ctx }) => {
      stopEmailImportService(ctx.user.id);
      return { success: true };
    }),
    
    status: protectedProcedure.query(async ({ ctx }) => {
      return { isRunning: isEmailImportServiceRunning(ctx.user.id) };
    }),
    
    checkNow: protectedProcedure.mutation(async ({ ctx }) => {
      const result = await triggerEmailCheck(ctx.user.id);
      return result;
    }),
  }),
  
  // ============= IMPORT SETTINGS ROUTES =============
  importSettings: router({
    get: protectedProcedure.query(async ({ ctx }) => {
      const settings = await getImportSettingsByUser(ctx.user.id);
      
      // Return default settings if none exist
      if (!settings) {
        return {
          userId: ctx.user.id,
          manualImportEnabled: 1,
          autoImportEnabled: 0,
          autoImportSourcePath: null,
          autoImportFrequency: 60,
          emailImportEnabled: 0,
          emailImportAddress: null,
          emailImportPassword: null,
          emailImportHost: null,
          emailImportPort: 993,
          emailImportFrequency: 30,
          exportFolder: null,
        };
      }
      
      return settings;
    }),
    
    update: protectedProcedure
      .input(z.object({
        manualImportEnabled: z.number().min(0).max(1),
        autoImportEnabled: z.number().min(0).max(1),
        autoImportSourcePath: z.string().nullable().optional(),
        autoImportFrequency: z.number().min(1).optional(),
        emailImportEnabled: z.number().min(0).max(1),
        emailImportAddress: z.string().email().nullable().optional(),
        emailImportPassword: z.string().nullable().optional(),
        emailImportHost: z.string().nullable().optional(),
        emailImportPort: z.number().min(1).max(65535).optional(),
        emailImportFrequency: z.number().min(1).optional(),
        exportFolder: z.string().nullable().optional(),
      }))
      .mutation(async ({ input, ctx }) => {
        const settings = await upsertImportSettings({
          userId: ctx.user.id,
          ...input,
        });
        
        return settings;
      }),
  }),
  
  // ============= DEPARTMENT LIST ROUTES =============
  departments: router({
    getByUser: protectedProcedure.query(async ({ ctx }) => {
      return await getDepartmentsByUser(ctx.user.id);
    }),
    
    create: protectedProcedure
      .input(z.object({
        name: z.string().min(1).max(100),
      }))
      .mutation(async ({ input, ctx }) => {
        // Initialize default lists if this is the first department
        const existing = await getDepartmentsByUser(ctx.user.id);
        if (existing.length === 0) {
          await initializeDefaultLists(ctx.user.id);
        }
        
        // Check if department already exists
        const duplicate = existing.find(d => d.name.toLowerCase() === input.name.toLowerCase());
        if (duplicate) {
          throw new TRPCError({ 
            code: "CONFLICT", 
            message: `Le service "${input.name}" existe déjà` 
          });
        }
        
        return await createDepartment({
          userId: ctx.user.id,
          name: input.name,
        });
      }),
    
    delete: protectedProcedure
      .input(z.object({
        id: z.number(),
      }))
      .mutation(async ({ input }) => {
        await deleteDepartment(input.id);
        return { success: true };
      }),
  }),
  
  // ============= ACCOUNTING ALLOCATION LIST ROUTES =============
  accountingAllocations: router({
    getByUser: protectedProcedure.query(async ({ ctx }) => {
      return await getAccountingAllocationsByUser(ctx.user.id);
    }),
    
    create: protectedProcedure
      .input(z.object({
        name: z.string().min(1).max(100),
      }))
      .mutation(async ({ input, ctx }) => {
        // Initialize default lists if this is the first allocation
        const existing = await getAccountingAllocationsByUser(ctx.user.id);
        if (existing.length === 0) {
          await initializeDefaultLists(ctx.user.id);
        }
        
        // Check if allocation already exists
        const duplicate = existing.find(a => a.name.toLowerCase() === input.name.toLowerCase());
        if (duplicate) {
          throw new TRPCError({ 
            code: "CONFLICT", 
            message: `La ventilation comptable "${input.name}" existe déjà` 
          });
        }
        
        return await createAccountingAllocation({
          userId: ctx.user.id,
          name: input.name,
        });
      }),
    
    delete: protectedProcedure
      .input(z.object({
        id: z.number(),
      }))
      .mutation(async ({ input }) => {
        await deleteAccountingAllocation(input.id);
        return { success: true };
      }),
  }),
  
  // ============= AUTOMATION RULES ROUTES =============
  automationRules: router({
    list: protectedProcedure.query(async ({ ctx }) => {
      return await getAutomationRulesByUser(ctx.user.id);
    }),
    
    getById: protectedProcedure
      .input(z.object({
        id: z.number(),
      }))
      .query(async ({ input }) => {
        return await getAutomationRuleById(input.id);
      }),
    
    create: protectedProcedure
      .input(z.object({
        name: z.string().min(1),
        isActive: z.number().min(0).max(1).optional(),
        priority: z.number().optional(),
        conditions: z.string(), // JSON string
        conditionsLogic: z.enum(["AND", "OR"]).optional(),
        actions: z.string(), // JSON string
      }))
      .mutation(async ({ input, ctx }) => {
        const rule = await createAutomationRule({
          userId: ctx.user.id,
          ...input,
        });
        
        // If rule is active, reapply to existing BAP invoices
        if (rule.isActive === 1) {
          const { applyAutomationRules } = await import("./automationEngine");
          const allInvoices = await getInvoicesByUser(ctx.user.id);
          const bapInvoices = allInvoices.filter(inv => inv.isSubscription === 0);
          
          for (const invoice of bapInvoices) {
            const updates = await applyAutomationRules(ctx.user.id, invoice);
            if (updates.typeAchat || updates.serviceConcerne || updates.ventilationComptable || updates.autoFilledFields) {
              await updateInvoice(invoice.id, updates);
            }
          }
        }
        
        return rule;
      }),
    
    update: protectedProcedure
      .input(z.object({
        id: z.number(),
        name: z.string().min(1).optional(),
        isActive: z.number().min(0).max(1).optional(),
        priority: z.number().optional(),
        conditions: z.string().optional(),
        conditionsLogic: z.enum(["AND", "OR"]).optional(),
        actions: z.string().optional(),
      }))
      .mutation(async ({ input, ctx }) => {
        const { id, ...data } = input;
        const updated = await updateAutomationRule(id, data);
        
        // If rule is active, reapply to existing BAP invoices
        if (updated && updated.isActive === 1) {
          const { applyAutomationRules } = await import("./automationEngine");
          const allInvoices = await getInvoicesByUser(ctx.user.id);
          const bapInvoices = allInvoices.filter(inv => inv.isSubscription === 0);
          
          for (const invoice of bapInvoices) {
            const updates = await applyAutomationRules(ctx.user.id, invoice);
            if (updates.typeAchat || updates.serviceConcerne || updates.ventilationComptable || updates.autoFilledFields) {
              await updateInvoice(invoice.id, updates);
            }
          }
        }
        
        return updated;
      }),
    
    delete: protectedProcedure
      .input(z.object({
        id: z.number(),
      }))
      .mutation(async ({ input }) => {
        await deleteAutomationRule(input.id);
        return { success: true };
      }),
    
    test: protectedProcedure
      .input(z.object({
        conditions: z.string(), // JSON string
        conditionsLogic: z.enum(["AND", "OR"]),
        actions: z.string(), // JSON string
      }))
      .mutation(async ({ input, ctx }) => {
        // Import applyAutomationRules from automationEngine
        const { applyAutomationRules } = await import("./automationEngine");
        
        // Get all user's invoices
        const invoices = await getInvoicesByUser(ctx.user.id);
        
        // Create a temporary rule object
        const tempRule = {
          id: -1,
          userId: ctx.user.id,
          name: "Test Rule",
          isActive: 1,
          priority: 999,
          conditions: input.conditions,
          conditionsLogic: input.conditionsLogic,
          actions: input.actions,
          createdAt: new Date(),
          updatedAt: new Date(),
        };
        
        // Test the rule on each invoice and count matches
        let affectedCount = 0;
        const affectedInvoices = [];
        
        for (const invoice of invoices) {
          // Manually evaluate the rule for testing
          const conditions: Condition[] = JSON.parse(input.conditions);
          const actionsObj: Actions = JSON.parse(input.actions);
          
          // Evaluate conditions
          let conditionsMatch = true;
          if (input.conditionsLogic === "AND") {
            conditionsMatch = conditions.every(cond => {
              const fieldValue = invoice[cond.field as keyof typeof invoice];
              if (!fieldValue) return false;
              const valueStr = String(fieldValue).toLowerCase();
              const condValue = cond.value.toLowerCase();
              if (cond.operator === "contains") return valueStr.includes(condValue);
              if (cond.operator === "equals") return valueStr === condValue;
              if (cond.operator === "startsWith") return valueStr.startsWith(condValue);
              if (cond.operator === "endsWith") return valueStr.endsWith(condValue);
              if (cond.operator === ">") return Number(fieldValue) > Number(cond.value);
              if (cond.operator === "<") return Number(fieldValue) < Number(cond.value);
              if (cond.operator === ">=") return Number(fieldValue) >= Number(cond.value);
              if (cond.operator === "<=") return Number(fieldValue) <= Number(cond.value);
              return false;
            });
          } else {
            conditionsMatch = conditions.some(cond => {
              const fieldValue = invoice[cond.field as keyof typeof invoice];
              if (!fieldValue) return false;
              const valueStr = String(fieldValue).toLowerCase();
              const condValue = cond.value.toLowerCase();
              if (cond.operator === "contains") return valueStr.includes(condValue);
              if (cond.operator === "equals") return valueStr === condValue;
              if (cond.operator === "startsWith") return valueStr.startsWith(condValue);
              if (cond.operator === "endsWith") return valueStr.endsWith(condValue);
              if (cond.operator === ">") return Number(fieldValue) > Number(cond.value);
              if (cond.operator === "<") return Number(fieldValue) < Number(cond.value);
              if (cond.operator === ">=") return Number(fieldValue) >= Number(cond.value);
              if (cond.operator === "<=") return Number(fieldValue) <= Number(cond.value);
              return false;
            });
          }
          
          if (conditionsMatch) {
            affectedCount++;
            affectedInvoices.push({
              id: invoice.id,
              supplierName: invoice.supplierName,
              invoiceNumber: invoice.invoiceNumber,
              changes: actionsObj,
            });
          }
        }
        
        return {
          totalInvoices: invoices.length,
          affectedCount,
          affectedInvoices: affectedInvoices.slice(0, 10), // Return first 10 for preview
        };
      }),
    
    duplicate: protectedProcedure
      .input(z.object({
        id: z.number(),
      }))
      .mutation(async ({ input, ctx }) => {
        const original = await getAutomationRuleById(input.id);
        if (!original || original.userId !== ctx.user.id) {
          throw new TRPCError({ code: "NOT_FOUND" });
        }
        
        // Create a copy with modified name
        const duplicate = await createAutomationRule({
          userId: ctx.user.id,
          name: `${original.name} (copie)`,
          isActive: 0, // Inactive by default
          priority: original.priority,
          conditions: original.conditions,
          conditionsLogic: original.conditionsLogic,
          actions: original.actions,
        });
        
        return duplicate;
      }),
    
    reapplyToExistingInvoices: protectedProcedure
      .mutation(async ({ ctx }) => {
        const { applyAutomationRules } = await import("./automationEngine");
        
        // Get all BAP invoices (isSubscription = 0)
        const allInvoices = await getInvoicesByUser(ctx.user.id);
        const bapInvoices = allInvoices.filter(inv => inv.isSubscription === 0);
        
        let updatedCount = 0;
        
        // Apply automation rules to each BAP invoice
        for (const invoice of bapInvoices) {
          const updates = await applyAutomationRules(ctx.user.id, invoice);
          
          // Check if any updates were made
          if (updates.typeAchat || updates.serviceConcerne || updates.ventilationComptable || updates.autoFilledFields) {
            await updateInvoice(invoice.id, updates);
            updatedCount++;
          }
        }
        
        return {
          totalBapInvoices: bapInvoices.length,
          updatedCount,
        };
      }),
  }),
  
  // ============= LLM FIELDS CONFIG ROUTES =============
  llmFieldsConfig: router({
    getAll: protectedProcedure
      .query(async ({ ctx }) => {
        // Initialize default fields if none exist
        const existing = await getLlmFieldsConfigByUser(ctx.user.id);
        if (existing.length === 0) {
          await initializeDefaultLlmFields(ctx.user.id);
          return await getLlmFieldsConfigByUser(ctx.user.id);
        }
        return existing;
      }),
    
    updateField: protectedProcedure
      .input(z.object({
        fieldName: z.string(),
        isRequired: z.number().min(0).max(1),
      }))
      .mutation(async ({ input, ctx }) => {
        // Get existing field config
        const existing = await getLlmFieldsConfigByUser(ctx.user.id);
        const field = existing.find(f => f.fieldName === input.fieldName);
        
        if (!field) {
          throw new TRPCError({ code: "NOT_FOUND", message: "Field not found" });
        }
        
        // Update the field
        return await upsertLlmFieldConfig({
          userId: ctx.user.id,
          fieldName: input.fieldName,
          displayName: field.displayName,
          isRequired: input.isRequired,
          displayOrder: field.displayOrder,
        });
      }),
  }),
});

export type AppRouter = typeof appRouter;