model Workflow {
  id                  String                 @id @default(cuid())
  createdAt           DateTime               @default(now())
  updatedAt           DateTime               @updatedAt
  name                String
  description         String
  status              String                 @default("draft")
  tenantId            String?
  tenant              Tenant?                @relation(fields: [tenantId], references: [id])
  createdByUserId     String?
  createdByUser       User?                  @relation(name: "createdByUser", fields: [createdByUserId], references: [id])
  appliesToAllTenants Boolean                @default(false)
  blocks              WorkflowBlock[]
  inputExamples       WorkflowInputExample[]
  executions          WorkflowExecution[]
}

model WorkflowBlock {
  id                  String                        @id @default(cuid())
  workflowId          String // Foreign key to the Workflow
  workflow            Workflow                      @relation(fields: [workflowId], references: [id], onDelete: Cascade)
  createdAt           DateTime                      @default(now())
  updatedAt           DateTime                      @updatedAt
  type                String
  description         String
  isTrigger           Boolean                       @default(false)
  isBlock             Boolean                       @default(false)
  fromBlocks          WorkflowBlockToBlock[]        @relation(name: "toBlock")
  toBlocks            WorkflowBlockToBlock[]        @relation(name: "fromBlock")
  input               String
  executions          WorkflowBlockExecution[]      @relation(name: "executions")
  fromExecutions      WorkflowBlockExecution[]      @relation(name: "fromExecutions")
  conditionsGroups    WorkflowBlockConditionGroup[]
  waitingInExecutions WorkflowExecution[]
}

model WorkflowBlockConditionGroup {
  id              String                   @id @default(cuid())
  workflowBlockId String
  workflowBlock   WorkflowBlock            @relation(fields: [workflowBlockId], references: [id], onDelete: Cascade)
  index           Int
  type            String // AND or OR
  conditions      WorkflowBlockCondition[]
}

model WorkflowBlockCondition {
  id                            String                      @id @default(cuid())
  workflowBlockConditionGroupId String
  workflowBlockConditionGroup   WorkflowBlockConditionGroup @relation(fields: [workflowBlockConditionGroupId], references: [id], onDelete: Cascade)
  index                         Int
  variable                      String
  operator                      String
  value                         String
}

model WorkflowBlockToBlock {
  id          String        @id @default(cuid())
  fromBlockId String
  fromBlock   WorkflowBlock @relation(name: "fromBlock", fields: [fromBlockId], references: [id], onDelete: Cascade)
  toBlockId   String
  toBlock     WorkflowBlock @relation(name: "toBlock", fields: [toBlockId], references: [id], onDelete: Cascade)
  condition   String?

  @@unique([fromBlockId, toBlockId])
}

model WorkflowExecution {
  id                  String                   @id @default(cuid())
  createdAt           DateTime                 @default(now())
  updatedAt           DateTime                 @updatedAt
  workflowId          String
  workflow            Workflow                 @relation(fields: [workflowId], references: [id], onDelete: Cascade)
  tenantId            String?
  tenant              Tenant?                  @relation(fields: [tenantId], references: [id], onDelete: Cascade)
  type                String // manual, api, stream
  status              String
  input               String
  output              String?
  duration            Int?
  endedAt             DateTime?
  error               String?
  waitingBlockId      String?
  waitingBlock        WorkflowBlock?           @relation(fields: [waitingBlockId], references: [id])
  createdByUserId     String?
  createdByUser       User?                    @relation(name: "executedByUser", fields: [createdByUserId], references: [id])
  appliesToAllTenants Boolean                  @default(false)
  blockRuns           WorkflowBlockExecution[]

  @@index([tenantId, appliesToAllTenants, createdAt(sort: Desc)], name: "workflow_execution_tenant_scope_created_at_idx")
  @@index([workflowId, tenantId, createdAt(sort: Desc)], name: "workflow_execution_workflow_tenant_created_at_idx")
  @@index([tenantId, status, createdAt(sort: Desc)], name: "workflow_execution_tenant_status_created_at_idx")
  @@index([tenantId, type, createdAt(sort: Desc)], name: "workflow_execution_tenant_type_created_at_idx")
}

model WorkflowInputExample {
  id         String   @id @default(cuid())
  createdAt  DateTime @default(now())
  workflowId String
  workflow   Workflow @relation(fields: [workflowId], references: [id], onDelete: Cascade)
  title      String
  input      String?

  @@unique([workflowId, title])
}

model WorkflowBlockExecution {
  id                  String            @id @default(cuid())
  workflowExecutionId String
  workflowExecution   WorkflowExecution @relation(fields: [workflowExecutionId], references: [id], onDelete: Cascade)
  workflowBlockId     String
  workflowBlock       WorkflowBlock     @relation(name: "executions", fields: [workflowBlockId], references: [id], onDelete: Cascade)
  fromWorkflowBlockId String?
  fromWorkflowBlock   WorkflowBlock?    @relation(name: "fromExecutions", fields: [fromWorkflowBlockId], references: [id])
  status              String
  startedAt           DateTime
  input               String?
  output              String?
  duration            Int?
  endedAt             DateTime?
  error               String?
}

model WorkflowVariable {
  id              String   @id @default(cuid())
  createdAt       DateTime @default(now())
  updatedAt       DateTime @updatedAt
  tenantId        String?
  tenant          Tenant?  @relation(fields: [tenantId], references: [id], onDelete: Cascade)
  name            String
  value           String
  createdByUserId String?
  createdByUser   User?    @relation(fields: [userId], references: [id])
  userId          String?

  @@unique([tenantId, name])
}

model WorkflowCredential {
  id              String   @id @default(cuid())
  createdAt       DateTime @default(now())
  updatedAt       DateTime @updatedAt
  tenantId        String?
  tenant          Tenant?  @relation(fields: [tenantId], references: [id], onDelete: Cascade)
  name            String
  value           String
  createdByUserId String?
  createdByUser   User?    @relation(fields: [userId], references: [id])
  userId          String?

  @@unique([tenantId, name])
}