generator client {
  provider = "prisma-client-js"
}

datasource db {
  provider = "postgresql"
}

enum TenantStatus {
  TRIAL
  ACTIVE
  SUSPENDED
  PAST_DUE
  CANCELLED

  @@map("tenant_status")
}

model Tenant {
  id              String       @id @default(uuid()) @db.Uuid
  code            String       @unique
  slug            String       @unique
  legalName       String       @map("legal_name")
  tradeName       String?      @map("trade_name")
  taxId           String?      @map("tax_id")
  status          TenantStatus @default(TRIAL)
  timezone        String       @default("America/Sao_Paulo")
  locale          String       @default("pt-BR")
  billingCurrency String       @default("BRL") @map("billing_currency")
  telephonyDomain String?      @map("telephony_domain")
  planId          String       @map("plan_id") @db.Uuid
  createdAt       DateTime     @default(now()) @map("created_at")
  updatedAt       DateTime     @updatedAt @map("updated_at")
  deletedAt       DateTime?    @map("deleted_at")

  plan               Plan                @relation(fields: [planId], references: [id])
  memberships        TenantMembership[]
  userRoles          UserRole[]
  extensions         Extension[]
  trunks             Trunk[]
  dialplanExtensions DialplanExtension[]
  dialplanVersions   DialplanVersion[]
  queues             Queue[]
  agents             Agent[]
  pauseReasons       PauseReason[]
  tiers              Tier[]
  agentSessions      AgentSession[]
  agentStateEvents   AgentStateEvent[]
  agentPauseEvents   AgentPauseEvent[]
  campaigns          Campaign[]
  leads              Lead[]
  suppressionEntries SuppressionEntry[]
  callAttempts       CallAttempt[]
  campaignStats      CampaignStats[]

  @@map("tenants")
}

// Entitlements por plano (agente.md secao 56) — "criar sistema genérico...
// não espalhar `if plan == PRO` pelo código". Todo tenant tem exatamente um
// Plan (nunca null: em vez de checar "tem plano?", o código só lê o limite
// e trata null-no-campo como "sem limite", agente.md secao 57-61).
model Plan {
  id   String @id @default(uuid()) @db.Uuid
  key  String @unique
  name String

  maxExtensions         Int? @map("max_extensions")
  maxAgents             Int? @map("max_agents")
  maxTrunks             Int? @map("max_trunks")
  maxQueues             Int? @map("max_queues")
  maxCampaigns          Int? @map("max_campaigns")
  maxCps                Int? @map("max_cps")
  maxConcurrentCalls    Int? @map("max_concurrent_calls")
  maxDailyCalls         Int? @map("max_daily_calls")
  maxMonthlyCalls       Int? @map("max_monthly_calls")
  maxRecordingStorageGb Int? @map("max_recording_storage_gb")

  recordingEnabled       Boolean @default(true) @map("recording_enabled")
  aiEnabled              Boolean @default(false) @map("ai_enabled")
  aiTranscriptionEnabled Boolean @default(false) @map("ai_transcription_enabled")
  aiAnalysisEnabled      Boolean @default(false) @map("ai_analysis_enabled")
  apiAccessEnabled       Boolean @default(true) @map("api_access_enabled")

  createdAt DateTime @default(now()) @map("created_at")
  updatedAt DateTime @updatedAt @map("updated_at")

  tenants Tenant[]

  @@map("plans")
}

enum UserStatus {
  ACTIVE
  DISABLED

  @@map("user_status")
}

// Identidade global do usuário. NUNCA carrega tenant_id diretamente — o tenant
// é sempre resolvido via TenantMembership (agente.md secao 31).
model User {
  id                 String     @id @default(uuid()) @db.Uuid
  email              String     @unique
  passwordHash       String     @map("password_hash")
  name               String
  status             UserStatus @default(ACTIVE)
  mustChangePassword Boolean    @default(false) @map("must_change_password")
  createdAt          DateTime   @default(now()) @map("created_at")
  updatedAt          DateTime   @updatedAt @map("updated_at")
  deletedAt          DateTime?  @map("deleted_at")

  memberships TenantMembership[]
  userRoles   UserRole[]
  sessions    Session[]
  agents      Agent[]

  @@map("users")
}

enum RoleScope {
  PLATFORM
  TENANT

  @@map("role_scope")
}

// Definições de role. Roles de sistema (isSystem=true) são criadas pelo seed
// (agente.md secao 142) e não podem ser removidas via API.
model Role {
  id        String    @id @default(uuid()) @db.Uuid
  key       String    @unique
  name      String
  scope     RoleScope
  isSystem  Boolean   @default(false) @map("is_system")
  createdAt DateTime  @default(now()) @map("created_at")
  updatedAt DateTime  @updatedAt @map("updated_at")

  rolePermissions RolePermission[]
  userRoles       UserRole[]

  @@map("roles")
}

model Permission {
  id          String  @id @default(uuid()) @db.Uuid
  key         String  @unique
  description String?

  rolePermissions RolePermission[]

  @@map("permissions")
}

model RolePermission {
  roleId       String @map("role_id") @db.Uuid
  permissionId String @map("permission_id") @db.Uuid

  role       Role       @relation(fields: [roleId], references: [id], onDelete: Cascade)
  permission Permission @relation(fields: [permissionId], references: [id], onDelete: Cascade)

  @@id([roleId, permissionId])
  @@map("role_permissions")
}

// tenantId é obrigatório quando role.scope == TENANT e deve ser nulo quando
// role.scope == PLATFORM (invariante aplicado em packages/auth, não no banco —
// ver docs/AUTHENTICATION.md).
model UserRole {
  id        String   @id @default(uuid()) @db.Uuid
  userId    String   @map("user_id") @db.Uuid
  roleId    String   @map("role_id") @db.Uuid
  tenantId  String?  @map("tenant_id") @db.Uuid
  createdAt DateTime @default(now()) @map("created_at")

  user   User    @relation(fields: [userId], references: [id], onDelete: Cascade)
  role   Role    @relation(fields: [roleId], references: [id], onDelete: Cascade)
  tenant Tenant? @relation(fields: [tenantId], references: [id], onDelete: Cascade)

  @@unique([userId, roleId, tenantId])
  @@map("user_roles")
}

// Refresh-token de longa duração (rotacionado a cada uso). Nunca guardamos o
// token em texto puro — só o hash (SHA-256) usado para lookup/comparação.
model Session {
  id               String    @id @default(uuid()) @db.Uuid
  userId           String    @map("user_id") @db.Uuid
  refreshTokenHash String    @unique @map("refresh_token_hash")
  activeTenantId   String?   @map("active_tenant_id") @db.Uuid
  userAgent        String?   @map("user_agent")
  ipAddress        String?   @map("ip_address")
  createdAt        DateTime  @default(now()) @map("created_at")
  expiresAt        DateTime  @map("expires_at")
  revokedAt        DateTime? @map("revoked_at")

  user User @relation(fields: [userId], references: [id], onDelete: Cascade)

  @@index([userId])
  @@map("sessions")
}

// tenantId nulo = evento de escopo plataforma (agente.md secao 150).
model AuditLog {
  id         String   @id @default(uuid()) @db.Uuid
  tenantId   String?  @map("tenant_id") @db.Uuid
  userId     String?  @map("user_id") @db.Uuid
  action     String
  entityType String?  @map("entity_type")
  entityId   String?  @map("entity_id")
  before     Json?
  after      Json?
  ipAddress  String?  @map("ip_address")
  userAgent  String?  @map("user_agent")
  createdAt  DateTime @default(now()) @map("created_at")

  @@index([tenantId, createdAt])
  @@index([userId])
  @@map("audit_logs")
}

// Tabela tenant-scoped protegida por Row Level Security (ver migration
// 'tenant_isolation' e docs/TENANT_ISOLATION.md).
model TenantMembership {
  id        String   @id @default(uuid()) @db.Uuid
  tenantId  String   @map("tenant_id") @db.Uuid
  userId    String   @map("user_id") @db.Uuid
  createdAt DateTime @default(now()) @map("created_at")

  tenant Tenant @relation(fields: [tenantId], references: [id])
  user   User   @relation(fields: [userId], references: [id])

  @@unique([tenantId, userId])
  @@index([tenantId])
  @@map("tenant_memberships")
}

// Tabela tenant-scoped protegida por Row Level Security. sipPasswordEnc
// guarda a senha SIP cifrada (AES-256-GCM, ver packages/shared/src/crypto.ts)
// — nunca texto puro (agente.md secao 178).
model Extension {
  id       String @id @default(uuid()) @db.Uuid
  tenantId String @map("tenant_id") @db.Uuid

  number String
  name   String
  domain String

  sipPasswordEnc String @map("sip_password_enc")

  callerIdName   String? @map("caller_id_name")
  callerIdNumber String? @map("caller_id_number")

  context      String @default("default")
  sofiaProfile String @default("internal") @map("sofia_profile")
  codecs       String @default("PCMU,PCMA,OPUS") @map("codecs")

  maxRegistrations Int @default(1) @map("max_registrations")

  enabled Boolean @default(true)

  createdAt DateTime  @default(now()) @map("created_at")
  updatedAt DateTime  @updatedAt @map("updated_at")
  deletedAt DateTime? @map("deleted_at")

  tenant Tenant  @relation(fields: [tenantId], references: [id])
  agents Agent[]

  @@unique([tenantId, number])
  @@index([tenantId])
  @@map("extensions")
}

enum TrunkStatus {
  UP
  DOWN
  REGISTERED
  TRYING
  FAILED
  UNREGISTERED
  UNKNOWN

  @@map("trunk_status")
}

enum DtmfMode {
  RFC2833
  INFO
  INBAND

  @@map("dtmf_mode")
}

enum SipTransport {
  UDP
  TCP
  TLS

  @@map("sip_transport")
}

// Tabela tenant-scoped protegida por Row Level Security. passwordEnc guarda
// a senha do tronco cifrada (AES-256-GCM), como sipPasswordEnc em Extension
// (agente.md secao 41, 178).
model Trunk {
  id       String @id @default(uuid()) @db.Uuid
  tenantId String @map("tenant_id") @db.Uuid

  name        String
  description String?

  sofiaProfile String @default("external") @map("sofia_profile")

  host  String
  proxy String?
  realm String?

  register Boolean @default(true)

  username    String?
  passwordEnc String? @map("password_enc")

  fromUser   String? @map("from_user")
  fromDomain String? @map("from_domain")

  registerProxy String? @map("register_proxy")
  outboundProxy String? @map("outbound_proxy")

  expireSeconds Int @default(3600) @map("expire_seconds")
  retrySeconds  Int @default(30) @map("retry_seconds")

  callerIdName   String? @map("caller_id_name")
  callerIdNumber String? @map("caller_id_number")

  codecs String @default("PCMU,PCMA,OPUS")

  dtmfMode DtmfMode @default(RFC2833) @map("dtmf_mode")

  ping          Boolean @default(true)
  pingFrequency Int     @default(30) @map("ping_frequency")

  transport SipTransport @default(UDP)

  inboundContext String @default("default") @map("inbound_context")

  maxCps      Int? @map("max_cps")
  maxChannels Int? @map("max_channels")

  enabled Boolean @default(true)

  // Refletido pelos eventos sofia::gateway_state (agente.md secao 42) —
  // b2bcall-fs-events atualiza isso, nunca escrito manualmente pela API.
  status          TrunkStatus @default(UNKNOWN)
  statusUpdatedAt DateTime?   @map("status_updated_at")

  createdAt DateTime  @default(now()) @map("created_at")
  updatedAt DateTime  @updatedAt @map("updated_at")
  deletedAt DateTime? @map("deleted_at")

  tenant    Tenant     @relation(fields: [tenantId], references: [id])
  campaigns Campaign[]

  @@unique([tenantId, name])
  @@index([tenantId])
  @@map("trunks")
}

enum DialplanVersionStatus {
  DRAFT
  ACTIVE
  SUPERSEDED

  @@map("dialplan_version_status")
}

// Editor estruturado (agente.md secao 43) — fonte editável. As versões
// publicadas (DialplanVersion) são um snapshot gerado a partir destas
// linhas, não o que o FreeSWITCH consulta diretamente.
model DialplanExtension {
  id       String @id @default(uuid()) @db.Uuid
  tenantId String @map("tenant_id") @db.Uuid

  context String @default("default")
  name    String

  conditionField String @map("condition_field")
  conditionExpr  String @map("condition_expr")

  // Array de { application, data } — validado contra uma allowlist de
  // applications seguras na camada de API (agente.md secao 180: nunca
  // deixar input de usuário virar comando arbitrário no FreeSWITCH).
  actions     Json
  antiActions Json? @map("anti_actions")

  continueOnFalse Boolean @default(false) @map("continue_on_false")
  order           Int     @default(0)

  enabled Boolean @default(true)

  createdAt DateTime  @default(now()) @map("created_at")
  updatedAt DateTime  @updatedAt @map("updated_at")
  deletedAt DateTime? @map("deleted_at")

  tenant Tenant @relation(fields: [tenantId], references: [id])

  @@index([tenantId, context])
  @@map("dialplan_extensions")
}

// Versionamento (agente.md secao 44): gerar -> validar -> versionar ->
// ativar -> reloadxml -> verificar -> rollback se necessário. "Ativar" uma
// versão anterior é o próprio mecanismo de rollback — não existe endpoint
// separado.
model DialplanVersion {
  id       String @id @default(uuid()) @db.Uuid
  tenantId String @map("tenant_id") @db.Uuid

  context      String
  version      Int
  generatedXml String                @map("generated_xml")
  status       DialplanVersionStatus @default(DRAFT)

  createdByUserId String?   @map("created_by_user_id") @db.Uuid
  createdAt       DateTime  @default(now()) @map("created_at")
  activatedAt     DateTime? @map("activated_at")

  tenant Tenant @relation(fields: [tenantId], references: [id])

  @@unique([tenantId, context, version])
  @@index([tenantId, context, status])
  @@map("dialplan_versions")
}

enum QueueStrategy {
  LONGEST_IDLE_AGENT
  ROUND_ROBIN
  TOP_DOWN
  AGENT_WITH_LEAST_TALK_TIME
  AGENT_WITH_FEWEST_CALLS
  SEQUENTIALLY_BY_AGENT_ORDER
  RING_ALL
  RING_PROGRESSIVELY

  @@map("queue_strategy")
}

// Tabela tenant-scoped protegida por RLS (agente.md secao 50-51). O nome no
// FreeSWITCH é `<queue.id>@<tenant.telephonyDomain>` — mod_callcenter usa
// um namespace unico compartilhado entre tenants (nao ha equivalente ao
// diretorio por-arquivo do Sofia pra isolar por tenant, ver docs/QUEUES.md).
model Queue {
  id       String @id @default(uuid()) @db.Uuid
  tenantId String @map("tenant_id") @db.Uuid

  name        String
  description String?

  strategy QueueStrategy @default(LONGEST_IDLE_AGENT)

  mohSound          String? @map("moh_sound")
  announceSound     String? @map("announce_sound")
  announceFrequency Int     @default(0) @map("announce_frequency")

  maxWaitTime            Int @default(0) @map("max_wait_time")
  maxWaitTimeWithNoAgent Int @default(0) @map("max_wait_time_with_no_agent")

  agentNoAnswerStatus String? @map("agent_no_answer_status")

  tierRulesApply     Boolean @default(false) @map("tier_rules_apply")
  tierRuleWaitSecond Int     @default(300) @map("tier_rule_wait_second")

  discardAbandonedAfter  Int     @default(60) @map("discard_abandoned_after")
  abandonedResumeAllowed Boolean @default(false) @map("abandoned_resume_allowed")

  skipAgentsWithExternalCalls Boolean @default(true) @map("skip_agents_with_external_calls")

  recordingEnabled Boolean @default(false) @map("recording_enabled")

  enabled Boolean @default(true)

  createdAt DateTime  @default(now()) @map("created_at")
  updatedAt DateTime  @updatedAt @map("updated_at")
  deletedAt DateTime? @map("deleted_at")

  tenant    Tenant     @relation(fields: [tenantId], references: [id])
  tiers     Tier[]
  campaigns Campaign[]

  @@unique([tenantId, name])
  @@index([tenantId])
  @@map("queues")
}

enum AgentState {
  OFFLINE
  LOGGED_IN
  AVAILABLE
  RESERVED
  RINGING
  IN_CALL
  WRAP_UP
  PAUSED

  @@map("agent_state")
}

// Tabela tenant-scoped protegida por RLS. Separa User (login) / Agent
// (identidade de call center) / Extension (ramal SIP usado como contato) —
// agente.md secao 45. O nome no FreeSWITCH é `<agent.id>@<tenant.telephonyDomain>`,
// mesma convenção UUID das outras entidades (agente.md secao 47).
model Agent {
  id       String @id @default(uuid()) @db.Uuid
  tenantId String @map("tenant_id") @db.Uuid

  userId      String  @map("user_id") @db.Uuid
  extensionId String? @map("extension_id") @db.Uuid

  name String

  maxNoAnswer       Int @default(3) @map("max_no_answer")
  wrapUpTime        Int @default(10) @map("wrap_up_time")
  rejectDelayTime   Int @default(10) @map("reject_delay_time")
  busyDelayTime     Int @default(60) @map("busy_delay_time")
  noAnswerDelayTime Int @default(10) @map("no_answer_delay_time")

  // Espelha o estado real (secao 46) — nunca escrito diretamente pela API,
  // só por login/logout/pause/resume ou por eventos do FreeSWITCH.
  state          AgentState @default(OFFLINE)
  stateUpdatedAt DateTime?  @map("state_updated_at")

  enabled Boolean @default(true)

  createdAt DateTime  @default(now()) @map("created_at")
  updatedAt DateTime  @updatedAt @map("updated_at")
  deletedAt DateTime? @map("deleted_at")

  tenant       Tenant            @relation(fields: [tenantId], references: [id])
  user         User              @relation(fields: [userId], references: [id])
  extension    Extension?        @relation(fields: [extensionId], references: [id])
  tiers        Tier[]
  sessions     AgentSession[]
  stateEvents  AgentStateEvent[]
  pauseEvents  AgentPauseEvent[]
  callAttempts CallAttempt[]

  @@unique([tenantId, userId])
  @@index([tenantId])
  @@map("agents")
}

// Queue <-> Agent (agente.md secao 52). O nome da fila/agente no FreeSWITCH
// já é o "<id>@<domain>" — level/position espelham 1:1 os mesmos conceitos
// do mod_callcenter.
model Tier {
  id       String @id @default(uuid()) @db.Uuid
  tenantId String @map("tenant_id") @db.Uuid

  queueId String @map("queue_id") @db.Uuid
  agentId String @map("agent_id") @db.Uuid

  level    Int @default(1)
  position Int @default(1)

  createdAt DateTime @default(now()) @map("created_at")

  tenant Tenant @relation(fields: [tenantId], references: [id])
  queue  Queue  @relation(fields: [queueId], references: [id])
  agent  Agent  @relation(fields: [agentId], references: [id])

  @@unique([queueId, agentId])
  @@index([tenantId])
  @@map("tiers")
}

// Uma "sessão" = do login até o logout do agente (agente.md secao 45, 47).
model AgentSession {
  id       String @id @default(uuid()) @db.Uuid
  tenantId String @map("tenant_id") @db.Uuid
  agentId  String @map("agent_id") @db.Uuid

  startedAt DateTime  @default(now()) @map("started_at")
  endedAt   DateTime? @map("ended_at")

  tenant Tenant @relation(fields: [tenantId], references: [id])
  agent  Agent  @relation(fields: [agentId], references: [id])

  @@index([tenantId, agentId])
  @@map("agent_sessions")
}

// Histórico de transições de estado (agente.md secao 46) — nunca deletado,
// serve de auditoria e insumo pra relatórios (secao 158).
model AgentStateEvent {
  id       String @id @default(uuid()) @db.Uuid
  tenantId String @map("tenant_id") @db.Uuid
  agentId  String @map("agent_id") @db.Uuid

  state      AgentState
  occurredAt DateTime   @default(now()) @map("occurred_at")

  tenant Tenant @relation(fields: [tenantId], references: [id])
  agent  Agent  @relation(fields: [agentId], references: [id])

  @@index([tenantId, agentId, occurredAt])
  @@map("agent_state_events")
}

// agente.md secao 48.
model PauseReason {
  id       String @id @default(uuid()) @db.Uuid
  tenantId String @map("tenant_id") @db.Uuid

  name        String
  code        String
  description String?

  maxDuration Int?    @map("max_duration")
  paid        Boolean @default(false)

  enabled Boolean @default(true)

  createdAt DateTime @default(now()) @map("created_at")
  updatedAt DateTime @updatedAt @map("updated_at")

  tenant      Tenant            @relation(fields: [tenantId], references: [id])
  pauseEvents AgentPauseEvent[]

  @@unique([tenantId, code])
  @@index([tenantId])
  @@map("pause_reasons")
}

model AgentPauseEvent {
  id            String @id @default(uuid()) @db.Uuid
  tenantId      String @map("tenant_id") @db.Uuid
  agentId       String @map("agent_id") @db.Uuid
  pauseReasonId String @map("pause_reason_id") @db.Uuid

  startedAt DateTime  @default(now()) @map("started_at")
  endedAt   DateTime? @map("ended_at")

  tenant      Tenant      @relation(fields: [tenantId], references: [id])
  agent       Agent       @relation(fields: [agentId], references: [id])
  pauseReason PauseReason @relation(fields: [pauseReasonId], references: [id])

  @@index([tenantId, agentId])
  @@map("agent_pause_events")
}

enum CampaignStatus {
  DRAFT
  READY
  WAITING_SCHEDULE
  RUNNING
  PAUSED
  DRAINING
  STOPPED
  COMPLETED
  ERROR

  @@map("campaign_status")
}

// Tabela tenant-scoped protegida por RLS (agente.md secao 63-66). Só o
// modelo/CRUD e as transições de status desta fase — o motor que de fato
// origina chamadas (PredictiveDialerEngine, secao 72-73) é uma fase à parte.
model Campaign {
  id       String @id @default(uuid()) @db.Uuid
  tenantId String @map("tenant_id") @db.Uuid

  name        String
  description String?

  queueId String @map("queue_id") @db.Uuid
  trunkId String @map("trunk_id") @db.Uuid

  callerIdName   String? @map("caller_id_name")
  callerIdNumber String? @map("caller_id_number")

  timezone String @default("America/Sao_Paulo")

  startDate DateTime? @map("start_date") @db.Date
  endDate   DateTime? @map("end_date") @db.Date

  // ISO-8601 (1=segunda ... 7=domingo).
  daysOfWeek Int[] @map("days_of_week")

  // "HH:MM", interpretado na timezone da campanha — sem tipo TIME nativo
  // pra manter o schema simples nesta fase (o scheduler de verdade é da
  // fase Predictive Engine).
  startTime String? @map("start_time")
  endTime   String? @map("end_time")

  maxCps             Int? @map("max_cps")
  maxConcurrentCalls Int? @map("max_concurrent_calls")

  pacingInitial Float @default(1.0) @map("pacing_initial")
  pacingMin     Float @default(1.0) @map("pacing_min")
  pacingMax     Float @default(3.0) @map("pacing_max")

  targetAbandonRate Float @default(0.03) @map("target_abandon_rate")

  ringTimeout Int @default(30) @map("ring_timeout")
  maxAttempts Int @default(3) @map("max_attempts")

  recordingEnabled       Boolean @default(false) @map("recording_enabled")
  avmdEnabled            Boolean @default(false) @map("avmd_enabled")
  aiTranscriptionEnabled Boolean @default(false) @map("ai_transcription_enabled")
  aiAnalysisEnabled      Boolean @default(false) @map("ai_analysis_enabled")

  status CampaignStatus @default(DRAFT)

  createdAt DateTime  @default(now()) @map("created_at")
  updatedAt DateTime  @updatedAt @map("updated_at")
  deletedAt DateTime? @map("deleted_at")

  tenant        Tenant          @relation(fields: [tenantId], references: [id])
  queue         Queue           @relation(fields: [queueId], references: [id])
  trunk         Trunk           @relation(fields: [trunkId], references: [id])
  leads         Lead[]
  callAttempts  CallAttempt[]
  campaignStats CampaignStats[]

  @@unique([tenantId, name])
  @@index([tenantId])
  @@map("campaigns")
}

enum LeadStatus {
  NEW
  READY
  RESERVED
  ORIGINATING
  RINGING
  ANSWERED
  QUEUEING
  CONNECTED_AGENT

  BUSY
  NO_ANSWER
  FAILED

  VOICEMAIL

  CALLBACK

  COMPLETED

  DO_NOT_CALL

  MAX_ATTEMPTS

  @@map("lead_status")
}

// Tabela tenant-scoped protegida por RLS (agente.md secao 67-68). A reserva
// atômica (READY -> RESERVED, `FOR UPDATE SKIP LOCKED`, secao 78) é
// implementada na fase CPS Limiter/Predictive Engine — aqui só o modelo e
// o CRUD/import.
model Lead {
  id         String @id @default(uuid()) @db.Uuid
  tenantId   String @map("tenant_id") @db.Uuid
  campaignId String @map("campaign_id") @db.Uuid

  name String?

  phoneOriginal   String @map("phone_original")
  phoneNormalized String @map("phone_normalized")

  status LeadStatus @default(NEW)

  attemptCount Int @default(0) @map("attempt_count")

  lastAttemptAt DateTime? @map("last_attempt_at")
  nextAttemptAt DateTime? @map("next_attempt_at")

  lastResult String? @map("last_result")

  customFields Json @default("{}") @map("custom_fields")

  createdAt DateTime @default(now()) @map("created_at")
  updatedAt DateTime @updatedAt @map("updated_at")

  tenant       Tenant        @relation(fields: [tenantId], references: [id])
  campaign     Campaign      @relation(fields: [campaignId], references: [id])
  callAttempts CallAttempt[]

  @@unique([campaignId, phoneNormalized])
  @@index([tenantId])
  @@index([campaignId, status, nextAttemptAt])
  @@map("leads")
}

// Lista de bloqueio (agente.md secao 71) — tenant-scoped, checada antes de
// qualquer originate (checagem em si é da fase Predictive Engine/CPS
// Limiter, aqui só o modelo/CRUD).
model SuppressionEntry {
  id       String @id @default(uuid()) @db.Uuid
  tenantId String @map("tenant_id") @db.Uuid

  phoneNormalized String  @map("phone_normalized")
  reason          String?

  createdAt DateTime @default(now()) @map("created_at")

  tenant Tenant @relation(fields: [tenantId], references: [id])

  @@unique([tenantId, phoneNormalized])
  @@index([tenantId])
  @@map("suppression_entries")
}

enum CallAttemptStatus {
  CREATED
  RESERVED
  ORIGINATING
  ORIGINATED
  RINGING
  ANSWERED
  QUEUEING
  AGENT_CONNECTED
  COMPLETED
  BUSY
  NO_ANSWER
  FAILED
  ABANDONED

  @@map("call_attempt_status")
}

// Uma tentativa de discagem de um lead (agente.md secao 81-82). Os
// identificadores daqui (id, campaignId, leadId, originationUuid) viram
// channel variables b2bcall_* no originate (secao 81) — é assim que
// b2bcall-fs-events consegue popular NormalizedEvent.tenantId/b2bcallCallId
// pra chamadas do discador, diferente das chamadas internas (extension a
// extension) que não carregam esses vars ainda.
model CallAttempt {
  id         String  @id @default(uuid()) @db.Uuid
  tenantId   String  @map("tenant_id") @db.Uuid
  campaignId String  @map("campaign_id") @db.Uuid
  leadId     String  @map("lead_id") @db.Uuid
  agentId    String? @map("agent_id") @db.Uuid

  // UUID do channel no FreeSWITCH (real ou simulado) — null até o originate
  // de fato rodar (status ainda CREATED/RESERVED).
  originationUuid String? @unique @map("origination_uuid") @db.Uuid

  status CallAttemptStatus @default(CREATED)

  // agente.md secao 185: em modo simulação, nenhuma chamada PSTN real
  // acontece — answer/busy/no_answer/failed/ringing/delay/talk_time são
  // sorteados em software, nunca originados de verdade pro trunk.
  simulated Boolean @default(false)

  hangupCause     String? @map("hangup_cause")
  talkTimeSeconds Int?    @map("talk_time_seconds")

  createdAt  DateTime  @default(now()) @map("created_at")
  ringingAt  DateTime? @map("ringing_at")
  answeredAt DateTime? @map("answered_at")
  bridgedAt  DateTime? @map("bridged_at")
  endedAt    DateTime? @map("ended_at")

  tenant   Tenant   @relation(fields: [tenantId], references: [id])
  campaign Campaign @relation(fields: [campaignId], references: [id])
  lead     Lead     @relation(fields: [leadId], references: [id])
  agent    Agent?   @relation(fields: [agentId], references: [id])

  @@index([tenantId])
  @@index([campaignId, status])
  @@map("call_attempts")
}

// Estatísticas EWMA por campanha (agente.md secao 73-76), consultadas e
// atualizadas a cada tick do PredictiveDialerEngine — persistidas pra
// sobreviver a reinícios do worker (não é cache descartável). Valores
// iniciais são estimativas conservadoras (secao 74: "não precisa Machine
// Learning, preferir algoritmo estatístico determinístico e explicável"),
// convergem conforme tentativas reais completam.
model CampaignStats {
  campaignId String @id @map("campaign_id") @db.Uuid
  tenantId   String @map("tenant_id") @db.Uuid

  answerProbability  Float @default(0.4) @map("answer_probability")
  averageAnswerDelay Float @default(5) @map("average_answer_delay")
  averageTalkTime    Float @default(180) @map("average_talk_time")
  abandonRate        Float @default(0) @map("abandon_rate")

  // Fator de pacing aplicado no cálculo de quantas chamadas originar por
  // tick (secao 76) — começa em Campaign.pacingInitial, ajustado pelo
  // controle de abandono (secao 84), sempre dentro de [pacingMin, pacingMax].
  pacingFactor Float @default(1.0) @map("pacing_factor")

  updatedAt DateTime @updatedAt @map("updated_at")

  tenant   Tenant   @relation(fields: [tenantId], references: [id])
  campaign Campaign @relation(fields: [campaignId], references: [id])

  @@index([tenantId])
  @@map("campaign_stats")
}