import { int, mysqlEnum, mysqlTable, text, timestamp, varchar, uniqueIndex, decimal } from "drizzle-orm/mysql-core";

/**
 * Core user table backing auth flow.
 * Supports multiple authentication methods: Manus OAuth, local, and Azure AD
 */
export const users = mysqlTable("users", {
  id: int("id").autoincrement().primaryKey(),
  /** Manus OAuth identifier (openId) - Optional for backward compatibility */
  openId: varchar("openId", { length: 64 }).unique(),
  /** Azure AD Object ID - Unique identifier from Azure AD */
  azureAdId: varchar("azureAdId", { length: 64 }).unique(),
  name: text("name"),
  email: varchar("email", { length: 320 }).notNull().unique(),
  /** Hashed password for local authentication (bcrypt) */
  passwordHash: varchar("passwordHash", { length: 255 }),
  /** Authentication method: 'manus', 'local', 'azure-ad' */
  loginMethod: mysqlEnum("loginMethod", ["manus", "local", "azure-ad"]).notNull(),
  role: mysqlEnum("role", ["user", "admin"]).default("user").notNull(),
  /** Account status for manual user management */
  isActive: int("isActive").default(1).notNull(), // 0 = inactive, 1 = active
  createdAt: timestamp("createdAt").defaultNow().notNull(),
  updatedAt: timestamp("updatedAt").defaultNow().onUpdateNow().notNull(),
  lastSignedIn: timestamp("lastSignedIn").defaultNow().notNull(),
});

export type User = typeof users.$inferSelect;
export type InsertUser = typeof users.$inferInsert;

/**
 * Source files table storing uploaded PDF files that may contain multiple invoices
 */
export const sourceFiles = mysqlTable("sourceFiles", {
  id: int("id").autoincrement().primaryKey(),
  userId: int("userId").notNull(),
  fileName: varchar("fileName", { length: 255 }).notNull(),
  fileKey: text("fileKey").notNull(), // Local storage key with YYYY-MM prefix
  fileUrl: text("fileUrl").notNull(), // Public URL
  totalInvoicesDetected: int("totalInvoicesDetected").default(0).notNull(),
  processingStatus: mysqlEnum("processingStatus", ["processing", "completed", "error"]).default("processing").notNull(),
  processingProgress: varchar("processingProgress", { length: 255 }), // Progress message (e.g., "Extraction 3/9 factures...")
  createdAt: timestamp("createdAt").defaultNow().notNull(),
  updatedAt: timestamp("updatedAt").defaultNow().onUpdateNow().notNull(),
});

export type SourceFile = typeof sourceFiles.$inferSelect;
export type InsertSourceFile = typeof sourceFiles.$inferInsert;

/**
 * Invoices table storing individual invoices extracted from source files
 */
export const invoices = mysqlTable("invoices", {
  id: int("id").autoincrement().primaryKey(),
  userId: int("userId").notNull(),
  sourceFileId: int("sourceFileId").notNull(), // Reference to the source PDF file
  invoiceIndexInFile: int("invoiceIndexInFile").default(1).notNull(), // Position in the source file (1, 2, 3...)
  
  // File storage information (for individual invoice if split, or reference to source)
  fileName: varchar("fileName", { length: 255 }).notNull(),
  fileKey: text("fileKey").notNull(), // Local storage key
  fileUrl: text("fileUrl").notNull(), // Public URL
  
  // Extracted metadata
  supplierName: varchar("supplierName", { length: 255 }),
  invoiceNumber: varchar("invoiceNumber", { length: 100 }),
  invoiceDate: timestamp("invoiceDate"),
  deliveryNoteNumber: varchar("deliveryNoteNumber", { length: 100 }),
  orderNumber: varchar("orderNumber", { length: 100 }),
  totalAmount: decimal("totalAmount", { precision: 10, scale: 2 }),
  recipientName: varchar("recipientName", { length: 255 }), // Destinataire de la facture
  pageRange: varchar("pageRange", { length: 20 }), // ex: "1-2" ou "5"
  qualityScore: int("qualityScore"), // Score de qualité de l'extraction (0-100)
  
  // Metadata JSON file
  metadataFileKey: text("metadataFileKey"), // Storage key for JSON metadata
  metadataFileUrl: text("metadataFileUrl"), // Public URL for JSON
  
  // Processing status
  status: mysqlEnum("status", ["processing", "completed", "error"]).default("processing").notNull(),
  errorMessage: text("errorMessage"),
  
  // Export status
  exportStatus: mysqlEnum("exportStatus", ["not_exported", "exported", "export_error"]).default("not_exported").notNull(),
  
  // Manual correction tracking
  manuallyEdited: int("manuallyEdited").default(0).notNull(), // 0 = false, 1 = true
  
  // Business fields (optional)
  serviceConcerne: varchar("serviceConcerne", { length: 100 }), // Service concerné (DSI, TRAVAUX, etc.)
  typeAchat: mysqlEnum("typeAchat", ["CAPEX", "OPEX"]), // Type d'achat
  ventilationComptable: varchar("ventilationComptable", { length: 100 }), // Ventilation comptable (TOUS, PA, HEP, etc.)
  
  // Automation tracking - JSON array of field names that were auto-filled by automation rules
  // Example: ["typeAchat", "serviceConcerne", "ventilationComptable"]
  autoFilledFields: text("autoFilledFields"), // JSON string array
  
  // Extracted text from PDF
  extractedText: text("extractedText"), // Full text extracted from the invoice PDF
  
  // Subscription flag
  isSubscription: int("isSubscription").default(0).notNull(), // 0 = NON, 1 = OUI
  
  // BAP Validation
  bapValidated: int("bapValidated").default(0).notNull(), // 0 = non validé, 1 = validé BAP
  bapValidatedAt: timestamp("bapValidatedAt"), // Date de validation BAP

  // SFTP Export tracking
  exportedAt: timestamp("exportedAt"),
  exportMode: mysqlEnum("exportMode", ["manual", "automatic"]),
  
  createdAt: timestamp("createdAt").defaultNow().notNull(),
  updatedAt: timestamp("updatedAt").defaultNow().onUpdateNow().notNull(),
}, (table) => {
  return {
    // Unique constraint: no duplicate invoices with same supplier, invoice number, and date
    supplierInvoiceDateIdx: uniqueIndex("supplier_invoice_date_unique").on(table.supplierName, table.invoiceNumber, table.invoiceDate),
  };
});

export type Invoice = typeof invoices.$inferSelect;
export type InsertInvoice = typeof invoices.$inferInsert;

/**
 * User settings table for application preferences
 */
export const userSettings = mysqlTable("userSettings", {
  id: int("id").autoincrement().primaryKey(),
  userId: int("userId").notNull().unique(), // One settings record per user
  llmModel: varchar("llmModel", { length: 50 }).default("mistral-large-latest").notNull(), // Mistral model for invoice extraction
  orderNumberFormat: text("orderNumberFormat"), // Format/pattern du numéro de commande pour aider l'extraction
  // Mots-clés personnalisés pour améliorer la détection (séparés par des virgules)
  invoiceNumberKeywords: text("invoiceNumberKeywords"), // Ex: "Référence, Ref facture, Invoice ref"
  deliveryNoteKeywords: text("deliveryNoteKeywords"), // Ex: "Livraison, Delivery, Expédition"
  orderNumberKeywords: text("orderNumberKeywords"), // Ex: "Cde client, Référence commande, PO Number"
  supplierKeywords: text("supplierKeywords"), // Ex: "Vendeur, Société, Émetteur"
  totalAmountKeywords: text("totalAmountKeywords"), // Ex: "Net à payer, Total à régler, Amount due"
  subscriptionKeywords: text("subscriptionKeywords"), // Ex: "Abonnement, Subscription, Mensuel, Annuel"
  recipientKeywords: text("recipientKeywords"), // Ex: "Destinataire, À l'attention de, Client"
  sftpRecipientFilter: text("sftpRecipientFilter"), // Filtre destinataire pour l'export SFTP (vide = tous)
  // SFTP Configuration
  sftpHost: varchar("sftpHost", { length: 255 }),
  sftpPort: int("sftpPort").default(22),
  sftpUsername: varchar("sftpUsername", { length: 255 }),
  sftpPassword: text("sftpPassword"), // Encrypted password
  sftpRemotePath: varchar("sftpRemotePath", { length: 500 }).default("/"), // Remote directory path
  sftpAutoExport: int("sftpAutoExport").default(0).notNull(), // 0 = manual, 1 = automatic
  // LLM Logs retention
  llmLogsRetentionMonths: int("llmLogsRetentionMonths").default(3).notNull(), // Durée de conservation des logs LLM en mois (défaut: 3 mois)
  createdAt: timestamp("createdAt").defaultNow().notNull(),
  updatedAt: timestamp("updatedAt").defaultNow().onUpdateNow().notNull(),
});

export type UserSettings = typeof userSettings.$inferSelect;
export type InsertUserSettings = typeof userSettings.$inferInsert;

/**
 * Import settings table for configuring different import methods
 */
export const importSettings = mysqlTable("importSettings", {
  id: int("id").autoincrement().primaryKey(),
  userId: int("userId").notNull().unique(), // One settings record per user
  
  // Manual import settings
  manualImportEnabled: int("manualImportEnabled").default(1).notNull(), // 0 = disabled, 1 = enabled
  
  // Automatic import from folder settings
  autoImportEnabled: int("autoImportEnabled").default(0).notNull(), // 0 = disabled, 1 = enabled
  autoImportSourcePath: text("autoImportSourcePath"), // Path to folder to watch
  autoImportFrequency: int("autoImportFrequency").default(60).notNull(), // Frequency in minutes (default: 60 = 1 hour)
  
  // Email import settings
  emailImportEnabled: int("emailImportEnabled").default(0).notNull(), // 0 = disabled, 1 = enabled
  emailImportAddress: varchar("emailImportAddress", { length: 320 }), // Email address to monitor
  emailImportPassword: text("emailImportPassword"), // Encrypted password
  emailImportHost: varchar("emailImportHost", { length: 255 }), // IMAP server host
  emailImportPort: int("emailImportPort").default(993), // IMAP port (default: 993 for SSL)
  emailImportFrequency: int("emailImportFrequency").default(30).notNull(), // Frequency in minutes (default: 30)
  
  // Export folder settings
  exportFolder: text("exportFolder"), // Path to folder for exporting invoices
  bapExportMode: mysqlEnum("bapExportMode", ["browser", "folder"]).default("browser").notNull(), // BAP export mode: open in browser or save to folder
  
  createdAt: timestamp("createdAt").defaultNow().notNull(),
  updatedAt: timestamp("updatedAt").defaultNow().onUpdateNow().notNull(),
});

export type ImportSettings = typeof importSettings.$inferSelect;
export type InsertImportSettings = typeof importSettings.$inferInsert;

/**
 * Import logs table for tracking all import operations
 */
export const importLogs = mysqlTable("importLogs", {
  id: int("id").autoincrement().primaryKey(),
  userId: int("userId").notNull(),
  sourceFileId: int("sourceFileId").notNull(), // Reference to source file
  fileName: varchar("fileName", { length: 255 }).notNull(),
  totalInvoicesDetected: int("totalInvoicesDetected").default(0).notNull(),
  invoicesImported: int("invoicesImported").default(0).notNull(),
  duplicatesIgnored: int("duplicatesIgnored").default(0).notNull(),
  errors: int("errors").default(0).notNull(),
  duplicateDetails: text("duplicateDetails"), // JSON array of duplicate invoice info
  errorDetails: text("errorDetails"), // JSON array of error messages
  importedAt: timestamp("importedAt").defaultNow().notNull(),
});

export type ImportLog = typeof importLogs.$inferSelect;
export type InsertImportLog = typeof importLogs.$inferInsert;

/**
 * LLM Logs table for storing raw LLM responses for debugging and improvement
 */
export const llmLogs = mysqlTable("llmLogs", {
  id: int("id").autoincrement().primaryKey(),
  userId: int("userId").notNull(),
  sourceFileId: int("sourceFileId"), // Optional: link to source file if applicable
  invoiceId: int("invoiceId"), // Optional: link to invoice if applicable
  operation: varchar("operation", { length: 50 }).notNull(), // "detection" or "extraction"
  model: varchar("model", { length: 50 }).notNull(), // LLM model used
  promptSent: text("promptSent").notNull(), // Full prompt sent to LLM
  rawResponse: text("rawResponse").notNull(), // Raw response from LLM (before cleaning)
  cleanedResponse: text("cleanedResponse"), // Response after markdown cleaning
  success: int("success").default(1).notNull(), // 1 = success, 0 = error
  errorMessage: text("errorMessage"), // Error message if failed
  processingTimeMs: int("processingTimeMs"), // Processing time in milliseconds
  pageRange: varchar("pageRange", { length: 50 }), // Page range for this log (e.g., "1-2")
  createdAt: timestamp("createdAt").defaultNow().notNull(),
});

export type LlmLog = typeof llmLogs.$inferSelect;
export type InsertLlmLog = typeof llmLogs.$inferInsert;

/**
 * Department list table for managing "Service concerné" values
 */
export const departmentList = mysqlTable("departmentList", {
  id: int("id").autoincrement().primaryKey(),
  userId: int("userId").notNull(), // Each user has their own list
  name: varchar("name", { length: 100 }).notNull(),
  createdAt: timestamp("createdAt").defaultNow().notNull(),
}, (table) => {
  return {
    // Unique constraint: no duplicate department names for the same user
    userDepartmentIdx: uniqueIndex("user_department_unique").on(table.userId, table.name),
  };
});

export type Department = typeof departmentList.$inferSelect;
export type InsertDepartment = typeof departmentList.$inferInsert;

/**
 * Accounting allocation list table for managing "Ventilation comptable" values
 */
export const accountingAllocationList = mysqlTable("accountingAllocationList", {
  id: int("id").autoincrement().primaryKey(),
  userId: int("userId").notNull(), // Each user has their own list
  name: varchar("name", { length: 100 }).notNull(),
  createdAt: timestamp("createdAt").defaultNow().notNull(),
}, (table) => {
  return {
    // Unique constraint: no duplicate allocation names for the same user
    userAllocationIdx: uniqueIndex("user_allocation_unique").on(table.userId, table.name),
  };
});

export type AccountingAllocation = typeof accountingAllocationList.$inferSelect;
export type InsertAccountingAllocation = typeof accountingAllocationList.$inferInsert;

/**
 * Automation rules table for automatic field filling based on conditions
 */
export const automationRules = mysqlTable("automationRules", {
  id: int("id").autoincrement().primaryKey(),
  userId: int("userId").notNull(), // Each user has their own rules
  name: varchar("name", { length: 255 }).notNull(), // Rule name for identification
  isActive: int("isActive").default(1).notNull(), // 0 = disabled, 1 = enabled
  priority: int("priority").default(0).notNull(), // Execution order (lower = higher priority)
  
  // Conditions (IF) - JSON array of condition objects
  // Example: [{"field": "supplierName", "operator": "contains", "value": "Microsoft"}, {"field": "totalAmount", "operator": ">", "value": "1000"}]
  conditions: text("conditions").notNull(), // JSON string
  conditionsLogic: mysqlEnum("conditionsLogic", ["AND", "OR"]).default("AND").notNull(), // How to combine conditions
  
  // Actions (THEN) - JSON object with field assignments
  // Example: {"typeAchat": "CAPEX", "serviceConcerne": "DSI", "ventilationComptable": "TOUS"}
  actions: text("actions").notNull(), // JSON string
  
  createdAt: timestamp("createdAt").defaultNow().notNull(),
  updatedAt: timestamp("updatedAt").defaultNow().onUpdateNow().notNull(),
});

export type AutomationRule = typeof automationRules.$inferSelect;
export type InsertAutomationRule = typeof automationRules.$inferInsert;

/**
 * LLM Fields Configuration table
 * Stores configuration for each field used in invoice extraction
 * Allows users to define which fields are required for quality score calculation
 */
export const llmFieldsConfig = mysqlTable("llmFieldsConfig", {
  id: int("id").autoincrement().primaryKey(),
  userId: int("userId").notNull(), // Each user has their own configuration
  fieldName: varchar("fieldName", { length: 100 }).notNull(), // Field identifier (supplierName, invoiceNumber, etc.)
  displayName: varchar("displayName", { length: 255 }).notNull(), // Human-readable field name
  isRequired: int("isRequired").default(1).notNull(), // 1 = required for 100% score, 0 = optional
  displayOrder: int("displayOrder").default(0).notNull(), // Order in UI
  createdAt: timestamp("createdAt").defaultNow().notNull(),
  updatedAt: timestamp("updatedAt").defaultNow().onUpdateNow().notNull(),
});

export type LlmFieldConfig = typeof llmFieldsConfig.$inferSelect;
export type InsertLlmFieldConfig = typeof llmFieldsConfig.$inferInsert;

/**
 * Signatures table storing user signature images with first/last name
 */
export const signatures = mysqlTable("signatures", {
  id: int("id").autoincrement().primaryKey(),
  userId: int("userId").notNull(),
  firstName: varchar("firstName", { length: 100 }).notNull(),
  lastName: varchar("lastName", { length: 100 }).notNull(),
  imageKey: text("imageKey").notNull(),   // Local storage key
  imageUrl: text("imageUrl").notNull(),   // Public URL to the signature image
  createdAt: timestamp("createdAt").defaultNow().notNull(),
  updatedAt: timestamp("updatedAt").defaultNow().onUpdateNow().notNull(),
});

export type Signature = typeof signatures.$inferSelect;
export type InsertSignature = typeof signatures.$inferInsert;

/**
 * Service-Signature association table
 * Associates a department/service with a specific signature for PDF exports
 */
export const serviceSignatures = mysqlTable("serviceSignatures", {
  id: int("id").autoincrement().primaryKey(),
  userId: int("userId").notNull(),
  serviceName: varchar("serviceName", { length: 100 }).notNull(), // Department name (e.g., "DSI", "TRAVAUX")
  signatureId: int("signatureId").notNull(), // FK to signatures.id
  createdAt: timestamp("createdAt").defaultNow().notNull(),
  updatedAt: timestamp("updatedAt").defaultNow().onUpdateNow().notNull(),
}, (table) => {
  return {
    // One association per service per user
    userServiceIdx: uniqueIndex("user_service_unique").on(table.userId, table.serviceName),
  };
});

export type ServiceSignature = typeof serviceSignatures.$inferSelect;
export type InsertServiceSignature = typeof serviceSignatures.$inferInsert;

/**
 * BAP History table - records every BAP validation with PDF export details
 */
export const bapHistory = mysqlTable("bapHistory", {
  id: int("id").autoincrement().primaryKey(),
  userId: int("userId").notNull(),
  invoiceId: int("invoiceId").notNull(),
  supplierName: varchar("supplierName", { length: 255 }),
  invoiceNumber: varchar("invoiceNumber", { length: 100 }),
  invoiceDate: timestamp("invoiceDate"),
  totalAmount: varchar("totalAmount", { length: 50 }),
  typeAchat: varchar("typeAchat", { length: 50 }),       // CAPEX / OPEX
  serviceConcerne: varchar("serviceConcerne", { length: 100 }),
  ventilationComptable: varchar("ventilationComptable", { length: 100 }),
  recipientName: varchar("recipientName", { length: 255 }),
  exportMode: mysqlEnum("exportMode", ["browser", "folder"]).default("browser").notNull(),
  exportPath: text("exportPath"),                         // null for browser mode
  pdfUrl: text("pdfUrl"),                                 // S3 URL for browser mode
  signatureName: varchar("signatureName", { length: 255 }), // Signer name if applied
  validatedAt: timestamp("validatedAt").defaultNow().notNull(),
});
export type BapHistory = typeof bapHistory.$inferSelect;
export type InsertBapHistory = typeof bapHistory.$inferInsert;