Add drive SMART attributes and health status

cgi-bin/malp.rb

@@ -97,18 +97,84 @@ if cgi.params.key?("content")
       exit
     end
 
+    thousands = ->(n) { n.to_s.gsub(/(\d)(?=(\d{3})+$)/, '\1,') }
+
+    drive_stats = lambda do |dt, smart|
+      stats = []
+
+      case smart["passed"]
+      when true  then stats << ["ok",  "SMART PASSED"]
+      when false then stats << ["bad", "SMART FAILED"]
+      end
+
+      if (t = smart["temperature"])
+        cls = t >= 60 ? "bad" : t >= 50 ? "warn" : "ok"
+        stats << [cls, "🌡 #{t} °C"]
+      end
+
+      if (poh = smart["power_on_hours"])
+        stats << ["ok", "POH #{thousands.(poh)} h"]
+      end
+
+      if dt == "nvme"
+        if (p = smart["percentage_used"])
+          cls = p >= 90 ? "bad" : p >= 70 ? "warn" : "ok"
+          stats << [cls, "Wear #{p}%"]
+        end
+        if (m = smart["media_errors"])
+          stats << [m > 0 ? "bad" : "ok", "Media err #{m}"]
+        end
+        if (cw = smart["critical_warning"]) && cw != 0
+          stats << ["bad", "Crit warn 0x#{cw.to_s(16)}"]
+        end
+      else
+        if (r = smart["reallocated_sectors"])
+          stats << [r > 0 ? "warn" : "ok", "Realloc #{r}"]
+        end
+        if (s = smart["spin_retry"])
+          stats << [s > 0 ? "warn" : "ok", "Spin retry #{s}"]
+        end
+        if (p = smart["pending_sectors"])
+          stats << [p > 0 ? "warn" : "ok", "Pending #{p}"]
+        end
+        if (c = smart["crc_errors"])
+          stats << [c > 0 ? "warn" : "ok", "CRC #{c}"]
+        end
+      end
+
+      stats
+    end
+
     info.each do |entry|
       case entry["type"]
       when "drive"
         dt = entry["drivetype"]
+        name = CGI.escapeHTML(entry["name"].to_s)
         model = CGI.escapeHTML(entry["model"])
         capacity = CGI.escapeHTML(entry["capacity"])
+        smart = entry["smart"]
+
+        stats = smart ? drive_stats.(dt, smart) : []
+        card_cls = if stats.any? { |c, _| c == "bad" } then "bad"
+                   elsif stats.any? { |c, _| c == "warn" } then "warn"
+                   else "ok"
+                   end
+
+        stats_html = stats.map { |c, txt|
+          %(<span class="stat #{c}">#{CGI.escapeHTML(txt)}</span>)
+        }.join
+        stats_block = stats.empty? ? "" :
+          %(<div class="drive-stats" style="margin-top:0.6rem;">#{stats_html}</div>)
+
+        title = name.empty? ? model : "#{name} · #{model}"
+
         html << <<~HTML
-          <div class="card ok">
+          <div class="card #{card_cls} span-2">
             <div class="card-header">
-              <span class="card-title">#{model} <span class="drive-type #{dt}">#{dt.upcase}</span></span>
+              <span class="card-title">#{title} <span class="drive-type #{dt}">#{dt.upcase}</span></span>
             </div>
             <div class="card-sub">#{capacity}</div>
+            #{stats_block}
           </div>
         HTML
       end