evse_link feature

components/rest_api/src/evse_link_config_api.c

@@ -0,0 +1,108 @@
+#include "evse_link.h"
+#include "evse_link_config_api.h"   // new header for these handlers
+#include "esp_log.h"
+#include "cJSON.h"
+
+static const char *TAG = "link_config_api";
+
+// GET /api/v1/config/link
+static esp_err_t link_config_get_handler(httpd_req_t *req) {
+    bool   enabled = evse_link_is_enabled();
+    uint8_t mode    = evse_link_get_mode();    // 0=MASTER,1=SLAVE
+    uint8_t self_id = evse_link_get_self_id();
+
+    ESP_LOGI(TAG, "GET link config: enabled=%d mode=%u id=%u",
+             enabled, mode, self_id);
+
+    httpd_resp_set_type(req, "application/json");
+    cJSON *root = cJSON_CreateObject();
+    cJSON_AddBoolToObject  (root, "linkEnabled", enabled);
+    cJSON_AddStringToObject(root, "linkMode",
+        mode == EVSE_LINK_MODE_MASTER ? "MASTER" : "SLAVE");
+    cJSON_AddNumberToObject(root, "linkSelfId", self_id);
+
+    char *s = cJSON_Print(root);
+    httpd_resp_sendstr(req, s);
+    ESP_LOGI(TAG, "  payload: %s", s);
+    free(s);
+    cJSON_Delete(root);
+    return ESP_OK;
+}
+
+// POST /api/v1/config/link
+static esp_err_t link_config_post_handler(httpd_req_t *req) {
+    char buf[256];
+    int len = httpd_req_recv(req, buf, sizeof(buf)-1);
+    if (len <= 0) {
+        httpd_resp_send_err(req, HTTPD_400_BAD_REQUEST, "Empty body");
+        return ESP_FAIL;
+    }
+    buf[len] = '\0';
+    ESP_LOGI(TAG, "POST link config: %s", buf);
+
+    cJSON *json = cJSON_Parse(buf);
+    if (!json) {
+        httpd_resp_send_err(req, HTTPD_400_BAD_REQUEST, "Invalid JSON");
+        return ESP_FAIL;
+    }
+
+    // linkEnabled
+    cJSON *j_en = cJSON_GetObjectItem(json, "linkEnabled");
+    if (j_en && cJSON_IsBool(j_en)) {
+        evse_link_set_enabled(cJSON_IsTrue(j_en));
+        ESP_LOGI(TAG, "  set enabled = %d", cJSON_IsTrue(j_en));
+    }
+
+    // linkMode
+    cJSON *j_md = cJSON_GetObjectItem(json, "linkMode");
+    if (j_md && cJSON_IsString(j_md)) {
+        const char *m = j_md->valuestring;
+        if (strcmp(m, "MASTER") == 0) {
+            evse_link_set_mode(EVSE_LINK_MODE_MASTER);
+        } else if (strcmp(m, "SLAVE") == 0) {
+            evse_link_set_mode(EVSE_LINK_MODE_SLAVE);
+        } else {
+            cJSON_Delete(json);
+            httpd_resp_send_err(req, HTTPD_400_BAD_REQUEST,
+                                "Invalid linkMode (must be MASTER or SLAVE)");
+            return ESP_FAIL;
+        }
+        ESP_LOGI(TAG, "  set mode = %s", m);
+    }
+
+    // linkSelfId
+    cJSON *j_id = cJSON_GetObjectItem(json, "linkSelfId");
+    if (j_id && cJSON_IsNumber(j_id)) {
+        int id = j_id->valueint;
+        if (id < 0 || id > 254) {
+            cJSON_Delete(json);
+            httpd_resp_send_err(req, HTTPD_400_BAD_REQUEST,
+                                "Invalid linkSelfId (0–254)");
+            return ESP_FAIL;
+        }
+        evse_link_set_self_id((uint8_t)id);
+        ESP_LOGI(TAG, "  set self_id = %d", id);
+    }
+
+    cJSON_Delete(json);
+    httpd_resp_sendstr(req, "Link settings updated");
+    return ESP_OK;
+}
+
+void register_link_config_handlers(httpd_handle_t server, void *ctx) {
+    httpd_uri_t get = {
+        .uri      = "/api/v1/config/link",
+        .method   = HTTP_GET,
+        .handler  = link_config_get_handler,
+        .user_ctx = ctx
+    };
+    httpd_register_uri_handler(server, &get);
+
+    httpd_uri_t post = {
+        .uri      = "/api/v1/config/link",
+        .method   = HTTP_POST,
+        .handler  = link_config_post_handler,
+        .user_ctx = ctx
+    };
+    httpd_register_uri_handler(server, &post);
+}