syntax = "proto3";

package smartbotic.proto;

import "common.proto";

option cc_enable_arenas = true;

// Node position in editor
message Position {
    double x = 1;
    double y = 2;
}

// Workflow node definition
message WorkflowNode {
    string id = 1;
    string type = 2;
    string name = 3;
    string config = 4;  // JSON string
    Position position = 5;
    bool disabled = 6;
    map<string, string> metadata = 7;
}

// Connection between nodes
message Connection {
    string source_node_id = 1;
    string source_output = 2;
    string target_node_id = 3;
    string target_input = 4;
}

// Workflow settings
message WorkflowSettings {
    int32 timeout_ms = 1;
    bool retry_on_fail = 2;
    int32 max_retries = 3;
    int32 retry_delay_ms = 4;
    string error_policy = 5;  // "stop", "continue", "retry"
}

// Workflow definition
message Workflow {
    string id = 1;
    string name = 2;
    string description = 3;
    string group_id = 4;
    string owner_id = 5;
    bool active = 6;
    repeated WorkflowNode nodes = 7;
    repeated Connection connections = 8;
    WorkflowSettings settings = 9;
    int64 version = 10;
    int64 created_at = 11;
    int64 updated_at = 12;
    map<string, string> tags = 13;
}

// Workflow group
message WorkflowGroup {
    string id = 1;
    string name = 2;
    string description = 3;
    string parent_id = 4;
    string owner_id = 5;
    int64 created_at = 6;
    int64 updated_at = 7;
}

// Execution status
enum ExecutionStatus {
    EXECUTION_STATUS_UNSPECIFIED = 0;
    EXECUTION_STATUS_PENDING = 1;
    EXECUTION_STATUS_RUNNING = 2;
    EXECUTION_STATUS_COMPLETED = 3;
    EXECUTION_STATUS_FAILED = 4;
    EXECUTION_STATUS_CANCELLED = 5;
    EXECUTION_STATUS_WAITING = 6;  // Waiting for external trigger
}

// Node execution result
message NodeExecution {
    string node_id = 1;
    ExecutionStatus status = 2;
    int64 started_at = 3;
    int64 finished_at = 4;
    string input = 5;  // JSON string
    string output = 6;  // JSON string
    string error = 7;
    int32 retry_count = 8;
}

// Workflow execution
message Execution {
    string id = 1;
    string workflow_id = 2;
    string workflow_name = 3;
    string runner_id = 4;
    ExecutionStatus status = 5;
    string trigger_type = 6;  // "manual", "webhook", "schedule", "node"
    string trigger_data = 7;  // JSON string
    int64 started_at = 8;
    int64 finished_at = 9;
    repeated NodeExecution node_executions = 10;
    string error = 11;
    map<string, string> context = 12;
    string workflow_snapshot = 13;  // JSON string: {nodes, connections} at execution time
}

// Execute workflow request
message ExecuteWorkflowRequest {
    string workflow_id = 1;
    string trigger_type = 2;
    string trigger_data = 3;  // JSON string
    bool wait_for_completion = 4;
    int32 timeout_ms = 5;
}

// Execute workflow response
message ExecuteWorkflowResponse {
    string execution_id = 1;
    ExecutionStatus status = 2;
    string result = 3;  // JSON string (if wait_for_completion)
    Error error = 4;
}

// Cancel execution request
message CancelExecutionRequest {
    string execution_id = 1;
    string reason = 2;
}

// Retry execution request
message RetryExecutionRequest {
    string execution_id = 1;
    string from_node_id = 2;  // Optional: retry from specific node
}

// Get execution request
message GetExecutionRequest {
    string execution_id = 1;
}

// List executions request
message ListExecutionsRequest {
    string workflow_id = 1;  // Optional filter
    repeated ExecutionStatus statuses = 2;  // Optional filter
    PaginationRequest pagination = 3;
}

// List executions response
message ListExecutionsResponse {
    repeated Execution executions = 1;
    PaginationResponse pagination = 2;
}