obzenflow_core 0.2.4

// SPDX-License-Identifier: MIT OR Apache-2.0
// SPDX-FileCopyrightText: 2025-2026 ObzenFlow Contributors
// https://obzenflow.dev

//! HTTP ingestion submission DTOs and accepted-event provenance.
//!
//! Consolidated here from the former `event::ingestion` module so the whole
//! ingress story (admission, boundary, binding, and these submission/provenance
//! types) has a single home under `obzenflow_core::ingress`.

use super::admission::IngressAttemptSeq;
use super::IngressKey;
use crate::EventType;
use serde::{Deserialize, Serialize};

/// Event submission payload from HTTP clients (FLOWIP-084d).
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct EventSubmission {
    /// Event type (e.g., "order.created")
    pub event_type: EventType,

    /// Event payload (arbitrary JSON)
    pub data: serde_json::Value,

    /// Optional metadata (arbitrary JSON)
    #[serde(default)]
    pub metadata: Option<serde_json::Value>,

    /// Framework-owned handoff data used while an accepted HTTP event crosses into `flow!`.
    ///
    /// This field is intentionally skipped from user JSON. It is populated by the ingress
    /// endpoints after semantic checks pass and consumed by `HttpSource` when constructing the
    /// first `ChainEvent`.
    #[serde(skip)]
    pub ingress_handoff: Option<SubmissionIngressContext>,
}

/// Batch submission payload (FLOWIP-084d).
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct BatchSubmission {
    pub events: Vec<EventSubmission>,
}

/// Response for event submission endpoints (FLOWIP-084d).
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct SubmissionResponse {
    pub accepted: usize,
    pub rejected: usize,
    #[serde(skip_serializing_if = "Vec::is_empty", default)]
    pub errors: Vec<String>,
}

/// Shape of the data crossing the framework-owned ingress handoff.
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub enum SubmissionPayloadKind {
    /// Data still has the external protocol shape and must pass through the
    /// application-owned ingress decoder.
    External,
    /// Data was submitted as the decoder's typed output and only needs its
    /// canonical serde representation restored.
    TypedOutput,
}

/// Framework-owned handoff context carried on accepted submissions before they
/// become `ChainEvent`s.
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct SubmissionIngressContext {
    pub accepted_at_ns: u64,
    pub ingress_key: IngressKey,
    pub batch_index: Option<usize>,
    /// FLOWIP-115d: the per-attempt sequence, the cross-journal merge key against
    /// `IngressRefusal` facts. A batch's accepted rows share one sequence and are
    /// ordered within it by `batch_index`.
    pub attempt_seq: IngressAttemptSeq,
    /// Distinguishes hosted protocol data from a typed `IngressHandle`
    /// submission without exposing a second decoding contract to applications.
    pub payload_kind: SubmissionPayloadKind,
}

/// Provenance attached to accepted events when they enter the pipeline.
#[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq)]
pub struct IngressContext {
    pub accepted_at_ns: u64,
    pub ingress_key: IngressKey,
    #[serde(skip_serializing_if = "Option::is_none")]
    pub batch_index: Option<usize>,
    /// FLOWIP-115d: the per-attempt sequence carried onto the accepted source row,
    /// the merge key with system-journal `IngressRefusal` facts.
    pub attempt_seq: IngressAttemptSeq,
}