otp: added qr for otp

diff --git a/main/button_events.h b/main/button_events.h
index 6e82892..e0eda9f 100644
--- a/main/button_events.h
+++ b/main/button_events.h
@@ -249,6 +249,7 @@ typedef enum {
     BTN_OTP_DETAILS,
     BTN_OTP_DETAILS_VIEW,
     BTN_OTP_DETAILS_EXPORT,
+    BTN_OTP_DETAILS_SECRET,
     BTN_OTP_RETAIN_CONFIRM,
     BTN_OTP_DISCARD_DELETE,
 
diff --git a/main/process/dashboard.c b/main/process/dashboard.c
index d5614ac..c085190 100644
--- a/main/process/dashboard.c
+++ b/main/process/dashboard.c
@@ -1450,13 +1450,13 @@ static bool show_otp_detail_options_activity(
             if (ev_id == BTN_BACK) {
                 return true;
             } else if (ev_id == BTN_OTP_DETAILS_VIEW) {
-                return show_otp_details_activity(otp_ctx, initial_confirmation, is_valid, show_delete_btn);
+                show_otp_details_activity(otp_ctx, initial_confirmation, is_valid, show_delete_btn);
             } else if (ev_id == BTN_OTP_DETAILS_EXPORT) {
-                const char* msg[] = { "Export is not", "implemented yet" };
-                await_message_activity(msg, 2);
+                show_otp_uri_qr_activity(otp_ctx->name);
             }
         }
     }
+    return true;
 }
 // HOTP token-code fixed
 static bool display_hotp_screen(const otpauth_ctx_t* otp_ctx, const char* token, const bool confirm_only)
diff --git a/main/qrmode.c b/main/qrmode.c
index a9254ca..6ba4d1a 100644
--- a/main/qrmode.c
+++ b/main/qrmode.c
@@ -61,6 +61,8 @@ gui_activity_t* make_show_xpub_qr_activity(
 gui_activity_t* make_xpub_qr_options_activity(
     gui_view_node_t** script_textbox, gui_view_node_t** wallet_textbox, gui_view_node_t** density_textbox);
 
+gui_activity_t* make_show_otp_qr_actvity(const char* otp_name, Icon* qr_icon);
+
 gui_activity_t* make_search_verify_address_activity(
     const char* root_label, gui_view_node_t** label_text, progress_bar_t* progress_bar, gui_view_node_t** index_text);
 gui_activity_t* make_search_address_options_activity(
@@ -1441,6 +1443,59 @@ static void add_cr_after_last_slash(const char* url, char* output, const size_t
     strcpy(output + index + 2, url + index + 1);
 }
 
+bool show_otp_uri_qr_activity(const char* otp_name)
+{
+    JADE_ASSERT(otp_name);
+
+    bool ok = false;
+    char uri[OTP_MAX_URI_LEN];
+    Icon* qr_icon = NULL;
+    size_t written = 0;
+
+    SENSITIVE_PUSH(uri, sizeof(uri));
+
+    if (!otp_load_uri(otp_name, uri, sizeof(uri), &written) || !written) {
+        const char* msg[] = { "Failed to load", "OTP URI" };
+        await_error_activity(msg, 2);
+        goto cleanup;
+    }
+
+    if (written >= MAX_QR_V6_DATA_LEN) {
+        const char* msg[] = { "URI too long", "for QR" };
+        await_error_activity(msg, 2);
+        goto cleanup;
+    }
+
+    qr_icon = JADE_MALLOC(sizeof(Icon));
+    bytes_to_qr_icon((const uint8_t*)uri, written, qr_icon);
+    JADE_ASSERT(qr_icon->data && qr_icon->width && qr_icon->height);
+    SENSITIVE_PUSH(qr_icon->data, qrcode_get_icon_data_size(qr_icon->width, qr_icon->height));
+
+    gui_activity_t* const act = make_show_otp_qr_actvity(otp_name, qr_icon);
+    int32_t ev_id;
+
+    while (true) {
+        gui_set_current_activity(act);
+        if (gui_activity_wait_event(act, GUI_BUTTON_EVENT, ESP_EVENT_ANY_ID, NULL, &ev_id, NULL, 0)) {
+            if (ev_id == BTN_BACK) {
+                ok = true;
+                goto cleanup;
+            } else if (ev_id == BTN_QR_BRIGHTNESS) {
+                gui_next_qrcode_color();
+                gui_repaint(act->root_node);
+            }
+        }
+    }
+cleanup:
+    if (qr_icon) {
+        // The GUI node owns the icon: make sure we clear its
+        // data here before the activity is freed.
+        SENSITIVE_POP(qr_icon->data);
+    }
+    SENSITIVE_POP(uri);
+    return ok;
+}
+
 // Display screen with help url and qr code
 // Handles up to v4 codes - ie. text up to 78 bytes
 void await_qr_help_activity(const char* url)
diff --git a/main/qrmode.h b/main/qrmode.h
index 96172d0..5ca2a0d 100644
--- a/main/qrmode.h
+++ b/main/qrmode.h
@@ -5,6 +5,8 @@
 #include <stddef.h>
 #include <stdint.h>
 
+#include "otpauth.h"
+
 // Display singlesig xpub qr code
 void display_xpub_qr(void);
 
@@ -26,6 +28,9 @@ void await_qr_help_activity(const char* url);
 bool await_qr_back_continue_activity(
     const char* message[], size_t message_size, const char* url, bool default_selection);
 
+// Display a QR code for the OTP URI of the given otp name
+bool show_otp_uri_qr_activity(const char* otp_name);
+
 // Start pinserver authentication via qr codes
 void handle_qr_auth(bool suppress_pin_change_confirmation);
 
diff --git a/main/ui/qrmode.c b/main/ui/qrmode.c
index db0fb37..07627c0 100644
--- a/main/ui/qrmode.c
+++ b/main/ui/qrmode.c
@@ -226,6 +226,53 @@ gui_activity_t* make_qr_options_activity(gui_view_node_t** density_textbox, gui_
     return make_menu_activity("QR Settings", hdrbtns, 2, menubtns, 2);
 }
 
+gui_activity_t* make_show_otp_qr_actvity(const char* otp_name, Icon* qr_icon)
+{
+
+    JADE_ASSERT(otp_name);
+    JADE_ASSERT(qr_icon);
+
+    gui_activity_t* const act = gui_make_activity();
+    gui_view_node_t* node;
+
+    gui_view_node_t* hsplit;
+    gui_make_hsplit(&hsplit, GUI_SPLIT_RELATIVE, 2, 44, 56);
+    gui_set_parent(hsplit, act->root_node);
+
+    // LHS
+    gui_view_node_t* vsplit;
+    gui_make_vsplit(&vsplit, GUI_SPLIT_RELATIVE, 4, 20, 30, 25, 25);
+    gui_set_parent(vsplit, hsplit);
+
+    // back button
+    btn_data_t hdrbtns[]
+        = { { .txt = "=", .font = JADE_SYMBOLS_16x16_FONT, .ev_id = BTN_XPUB_EXIT, .borders = GUI_BORDER_ALL },
+              { .txt = NULL, .font = GUI_DEFAULT_FONT, .ev_id = GUI_BUTTON_EVENT_NONE },
+              { .txt = "P", .font = JADE_SYMBOLS_16x16_FONT, .ev_id = BTN_QR_BRIGHTNESS, .borders = GUI_BORDER_ALL } };
+    add_buttons(vsplit, UI_ROW, hdrbtns, 3); // 44 (hsplit) / 3 == 14 - almost 15 so ok
+
+    // second row, type label
+    gui_make_text(&node, otp_name, TFT_WHITE);
+    gui_set_parent(node, vsplit);
+    gui_set_align(node, GUI_ALIGN_LEFT, GUI_ALIGN_MIDDLE);
+
+    // third row, path
+    gui_make_text_font(&node, "Scan Secret Key", TFT_WHITE, DEFAULT_FONT); // fits path
+    gui_set_parent(node, vsplit);
+    gui_set_align(node, GUI_ALIGN_LEFT, GUI_ALIGN_TOP);
+
+    // button
+    btn_data_t ftrbtn = {
+        .txt = "View Secret", .font = GUI_DEFAULT_FONT, .ev_id = BTN_OTP_DETAILS_SECRET, .borders = GUI_BORDER_TOP
+    };
+    add_buttons(vsplit, UI_COLUMN, &ftrbtn, 1);
+
+    // RHS - QR icon
+    make_qrcode(hsplit, qr_icon, 1, 0);
+
+    return act;
+}
+
 // NOTE: 'icons' passed in here must be heap-allocated as the gui element takes ownership
 gui_activity_t* make_show_qr_activity(const char* message[], const size_t message_size, Icon* icons,
     const size_t num_icons, const size_t frames_per_qr_icon, const bool show_options_button)