show which key images were spend for ran signed tx

src/page.h

@@ -1520,6 +1520,8 @@ namespace xmreg {
                     for (mstch::node& input_node: inputs)
                     {
 
+                        mstch::map& input_map = boost::get<mstch::map>(input_node);
+
                         // show input amount
                         string& amount = boost::get<string>(
                                 boost::get<mstch::map>(input_node)["amount"]
@@ -1527,6 +1529,22 @@ namespace xmreg {
 
                         amount = fmt::format("{:0.12f}", XMR_AMOUNT(real_amounts.at(input_idx)));
 
+                        // check if key images are spend or not
+
+                        string& in_key_img_str = boost::get<string>(
+                                boost::get<mstch::map>(input_node)["in_key_img"]
+                        );
+
+                        key_image key_imgage;
+
+                        if (epee::string_tools::hex_to_pod(in_key_img_str, key_imgage))
+                        {
+
+                            input_map["already_spent"] = core_storage->get_db().has_key_image(key_imgage);
+                        }
+
+                        // mark real mixings
+
                         mstch::array& mixins = boost::get<mstch::array>(
                                 boost::get<mstch::map>(input_node)["mixins"]
                         );
@@ -1573,7 +1591,6 @@ namespace xmreg {
                         ++idx;
                     }
 
-
                     boost::get<mstch::array>(context["txs"]).push_back(tx_context);
                 }
 
@@ -2320,11 +2337,12 @@ namespace xmreg {
                                                       outputs);
 
                 inputs.push_back(mstch::map {
-                        {"in_key_img", REMOVE_HASH_BRAKETS(fmt::format("{:s}", in_key.k_image))},
+                        {"in_key_img"   , REMOVE_HASH_BRAKETS(fmt::format("{:s}", in_key.k_image))},
                         {"amount"       , fmt::format("{:0.12f}", XMR_AMOUNT(in_key.amount))},
                         {"input_idx"    , fmt::format("{:02d}", input_idx)},
                         {"mixins"       , mstch::array{}},
-                        {"ring_sigs" , txd.get_ring_sig_for_input(input_idx)}
+                        {"ring_sigs"    , txd.get_ring_sig_for_input(input_idx)},
+                        {"already_spent", false} // placeholder for later
                 });
 
                 inputs_xmr_sum += in_key.amount;

src/templates/partials/tx_details.html

@@ -125,7 +125,19 @@
        <table class="center">
       {{#inputs}}
         <tr>
-          <td style="text-align: left;">key image  {{input_idx}}: {{in_key_img}}</td>
+          <td style="text-align: left;">
+              key image  {{input_idx}}: {{in_key_img}}
+              {{#have_raw_tx}}
+               Already spent:
+                {{#already_spent}}
+                    <span style="color: red; font-weight: bold;">True</span>
+                {{/already_spent}}
+              {{^already_spent}}
+                False
+              {{/already_spent}}
+
+              {{/#have_raw_tx}}
+          </td>
           <td>amount: {{amount}}</td>
        </tr>
           <tr>