1 files changed, 44 insertions, 0 deletions

diff --git a/main/beacon_price.h b/main/beacon_price.h
new file mode 100644
index 0000000..cb2eb5b
--- /dev/null
+++ b/main/beacon_price.h
@@ -0,0 +1,44 @@
+#ifndef BEACON_PRICE_H
+#define BEACON_PRICE_H
+
+#include "esp_err.h"
+#include <stdint.h>
+#include <stdbool.h>
+
+#define TOLLGATE_OUI_0       0xC0
+#define TOLLGATE_OUI_1       0xFF
+#define TOLLGATE_OUI_2       0xEE
+#define TOLLGATE_IE_TYPE     0x01
+#define TOLLGATE_IE_VERSION  1
+
+#define TOLLGATE_IE_GEOHASH_MAX 9
+
+typedef struct __attribute__((packed)) {
+    uint8_t version;
+    uint8_t metric;
+    uint16_t price_per_step;
+    uint32_t step_size;
+    uint8_t mint_hash[4];
+    uint8_t geohash_len;
+    char geohash[TOLLGATE_IE_GEOHASH_MAX];
+    uint8_t npub_hash[4];
+} tollgate_price_payload_t;
+
+#define TOLLGATE_IE_PAYLOAD_SIZE sizeof(tollgate_price_payload_t)
+#define TOLLGATE_IE_TOTAL_SIZE   (6 + TOLLGATE_IE_PAYLOAD_SIZE)
+
+typedef struct __attribute__((packed)) {
+    uint8_t element_id;
+    uint8_t length;
+    uint8_t vendor_oui[3];
+    uint8_t vendor_oui_type;
+    tollgate_price_payload_t payload;
+} tollgate_price_ie_t;
+
+esp_err_t beacon_price_start(void);
+esp_err_t beacon_price_stop(void);
+void beacon_price_build_ie(tollgate_price_ie_t *ie);
+void beacon_price_hash_mint(const char *mint_url, uint8_t hash_out[4]);
+void beacon_price_hash_npub(const char *npub_hex, uint8_t hash_out[4]);
+
+#endif