use aide::axum::{ApiRouter, routing::get_with};
use axum::{
extract::{Path, State},
http::{HeaderMap, Uri},
};
use brk_types::{
BlockTemplate, BlockTemplateDiff, Dollars, MempoolInfo, MempoolRecentTx, NextBlockHash,
ReplacementNode, Txid,
};
use crate::{
AppState,
extended::TransformResponseExtended,
params::{Empty, NextBlockHashParam},
};
pub trait MempoolRoutes {
fn add_mempool_routes(self) -> Self;
}
impl MempoolRoutes for ApiRouter<AppState> {
fn add_mempool_routes(self) -> Self {
self.api_route(
"/api/mempool",
get_with(
async |uri: Uri, headers: HeaderMap, _: Empty, State(state): State<AppState>| {
state
.respond_json(&headers, state.mempool_strategy(), &uri, |q| q.mempool_info())
.await
},
|op| {
op.id("get_mempool")
.mempool_tag()
.summary("Mempool statistics")
.description("Get current mempool statistics including transaction count, total vsize, total fees, and fee histogram.\n\n*[Mempool.space docs](https://mempool.space/docs/api/rest#get-mempool)*")
.json_response::<MempoolInfo>()
.not_modified()
.server_error()
},
),
)
.api_route(
"/api/mempool/hash",
get_with(
async |uri: Uri, headers: HeaderMap, _: Empty, State(state): State<AppState>| {
state
.respond_json(&headers, state.mempool_strategy(), &uri, |q| q.mempool_hash())
.await
},
|op| {
op.id("get_mempool_hash")
.mempool_tag()
.summary("Mempool content hash")
.description("Returns an opaque hash that changes whenever the projected next block changes. Same value as the mempool ETag. Useful as a freshness/liveness signal: if it stays constant for tens of seconds on a live network, the mempool sync loop has stalled.")
.json_response::<NextBlockHash>()
.not_modified()
.server_error()
},
),
)
.api_route(
"/api/mempool/txids",
get_with(
async |uri: Uri, headers: HeaderMap, _: Empty, State(state): State<AppState>| {
state
.respond_json(&headers, state.mempool_strategy(), &uri, |q| q.mempool_txids())
.await
},
|op| {
op.id("get_mempool_txids")
.mempool_tag()
.summary("Mempool transaction IDs")
.description("Get all transaction IDs currently in the mempool.\n\n*[Mempool.space docs](https://mempool.space/docs/api/rest#get-mempool-transaction-ids)*")
.json_response::<Vec<Txid>>()
.not_modified()
.server_error()
},
),
)
.api_route(
"/api/mempool/recent",
get_with(
async |uri: Uri, headers: HeaderMap, _: Empty, State(state): State<AppState>| {
state
.respond_json(&headers, state.mempool_strategy(), &uri, |q| q.mempool_recent())
.await
},
|op| {
op.id("get_mempool_recent")
.mempool_tag()
.summary("Recent mempool transactions")
.description("Get the last 10 transactions to enter the mempool.\n\n*[Mempool.space docs](https://mempool.space/docs/api/rest#get-mempool-recent)*")
.json_response::<Vec<MempoolRecentTx>>()
.not_modified()
.server_error()
},
),
)
.api_route(
"/api/v1/replacements",
get_with(
async |uri: Uri, headers: HeaderMap, _: Empty, State(state): State<AppState>| {
state
.respond_json(&headers, state.mempool_strategy(), &uri, |q| {
q.recent_replacements(false)
})
.await
},
|op| {
op.id("get_replacements")
.mempool_tag()
.summary("Recent RBF replacements")
.description("Returns up to 25 most-recent RBF replacement trees across the whole mempool. Each entry has the same shape as `tx_rbf().replacements`.\n\n*[Mempool.space docs](https://mempool.space/docs/api/rest#get-replacements)*")
.json_response::<Vec<ReplacementNode>>()
.not_modified()
.server_error()
},
),
)
.api_route(
"/api/v1/fullrbf/replacements",
get_with(
async |uri: Uri, headers: HeaderMap, _: Empty, State(state): State<AppState>| {
state
.respond_json(&headers, state.mempool_strategy(), &uri, |q| {
q.recent_replacements(true)
})
.await
},
|op| {
op.id("get_fullrbf_replacements")
.mempool_tag()
.summary("Recent full-RBF replacements")
.description("Like `/api/v1/replacements`, but limited to trees where at least one predecessor was non-signaling (full-RBF).\n\n*[Mempool.space docs](https://mempool.space/docs/api/rest#get-fullrbf-replacements)*")
.json_response::<Vec<ReplacementNode>>()
.not_modified()
.server_error()
},
),
)
.api_route(
"/api/v1/mempool/block-template",
get_with(
async |uri: Uri, headers: HeaderMap, _: Empty, State(state): State<AppState>| {
state
.respond_json(&headers, state.mempool_strategy(), &uri, |q| {
q.block_template()
})
.await
},
|op| {
op.id("get_block_template")
.mempool_tag()
.summary("Projected next block template")
.description("Bitcoin Core's `getblocktemplate` selection: full transaction bodies in GBT order with aggregate stats. The returned `hash` is an opaque content token; pass it as `<hash>` on `/api/v1/mempool/block-template/diff/{hash}` to fetch deltas instead of refetching the whole template.")
.json_response::<BlockTemplate>()
.not_modified()
.server_error()
},
),
)
.api_route(
"/api/v1/mempool/block-template/diff/{hash}",
get_with(
async |uri: Uri,
headers: HeaderMap,
Path(path): Path<NextBlockHashParam>,
_: Empty,
State(state): State<AppState>| {
state
.respond_json(&headers, state.mempool_strategy(), &uri, move |q| {
q.block_template_diff(path.hash)
})
.await
},
|op| {
op.id("get_block_template_diff")
.mempool_tag()
.summary("Block template diff since hash")
.description("Delta of the projected next block since `<hash>`. `order` is the full new template in order: each entry is either a number (index into the prior template the client cached at `<hash>`) or a transaction object (new body to insert at this position). Walk `order` once to rebuild; `removed` is a convenience list of txids that left so clients can evict cached bodies. After applying, use the response `hash` as `<hash>` on the next call to keep iterating. Returns `404` when `<hash>` has aged out of server history; clients should fall back to `/api/v1/mempool/block-template`.")
.json_response::<BlockTemplateDiff>()
.not_modified()
.not_found()
.server_error()
},
),
)
.api_route(
"/api/mempool/price",
get_with(
async |uri: Uri, headers: HeaderMap, _: Empty, State(state): State<AppState>| {
state
.respond_json(&headers, state.mempool_strategy(), &uri, |q| q.live_price())
.await
},
|op| {
op.id("get_live_price")
.mempool_tag()
.summary("Live BTC/USD price")
.description(
"Returns the current BTC/USD price in dollars, derived from \
on-chain round-dollar output patterns in the last 12 blocks \
plus mempool.",
)
.json_response::<Dollars>()
.not_modified()
.server_error()
},
),
)
}
}