1 files changed, 107 insertions, 0 deletions
diff --git a/src/update_graphs.nim b/src/update_graphs.nim
new file mode 100644
index 0000000..3f902a4
--- /dev/null
+++ b/src/update_graphs.nim
@@ -0,0 +1,107 @@
+import os
+import osproc
+import strformat
+
+let
+    databaseDir = getAppDir().parentDir() / "database"
+    outputDir = paramStr(2)
+    width = 800
+    height = 600
+
+proc graph(filename, title, vlabel: string, args: varargs[string, `$`]) =
+    var cmdline: seq[string] = @[
+        "graph", joinPath(outputDir, filename),
+        "--width", $width,
+        "--height", $height,
+        "--title", title,
+        "--vertical-label", vlabel,
+    ] & @args
+
+    echo(&"Generating {joinPath(outputDir, filename)} ...")
+
+    let p = startProcess("rrdtool", args=cmdline,
+        options={poStdErrToStdOut, poUsePath, poParentStreams})
+
+    if p.waitForExit() != 0:
+        quit(1)
+
+
+for database in walkFiles(joinPath(databaseDir, "*.rrd")):
+    let (_, base, _) = splitFile(database)
+
+    graph(&"{base}-temperature-today.png", "Temperature", "Celcius",
+        "--end", "23:59 today",
+        "--start", "00:00 today",
+        "--alt-autoscale",
+        "--left-axis-format", "%.1lf",
+        &"DEF:temp1={database}:temperature:AVERAGE",
+        &"DEF:temp2={database}:temperature:AVERAGE:end=00\\:00 today:start=end-24h",
+        "LINE1:temp1#000000:today",
+        "LINE1:temp2#FF0000:yesterday",
+        "SHIFT:temp2:86400",
+    )
+
+    graph(&"{base}-temperature-month.png", "Temperature", "Celcius",
+        "--end", "23:59 today",
+        "--start", "end-1month",
+        "--step", "86400",
+        "--alt-autoscale",
+        "--x-grid", "DAY:1:DAY:1:DAY:1:86400:%d",
+        &"DEF:avg={database}:temperature:AVERAGE",
+        &"DEF:min={database}:temperature:MIN",
+        &"DEF:max={database}:temperature:MAX",
+        "LINE1:avg#000000:average",
+        "LINE2:min#FF0000:min",
+        "LINE3:max#00FF00:max"
+    )
+
+    graph(&"{base}-humidity-today.png", "Relative humidity", "%",
+        "--end", "23:59 today",
+        "--start", "00:00 today",
+        &"DEF:humi1={database}:humidity:AVERAGE",
+        &"DEF:humi2={database}:humidity:AVERAGE:end=00\\:00 today:start=end-24h",
+        "LINE1:humi1#000000:today",
+        "LINE1:humi2#FF0000:yesterday",
+        "SHIFT:humi2:86400",
+    )
+
+    graph(&"{base}-humidity-month.png", "Relative humidity", "%",
+        "--end", "23:59 today",
+        "--start", "end-1month",
+        "--step", "86400",
+        "--alt-autoscale",
+        "--x-grid", "DAY:1:DAY:1:DAY:1:86400:%d",
+        &"DEF:avg={database}:humidity:AVERAGE",
+        &"DEF:min={database}:humidity:MIN",
+        &"DEF:max={database}:humidity:MAX",
+        "LINE1:avg#000000:average",
+        "LINE2:min#FF0000:min",
+        "LINE3:max#00FF00:max",
+    )
+
+    graph(&"{base}-pressure-today.png", "Pressure", "Pascal",
+        "--end", "23:59 today",
+        "--start", "00:00 today",
+        "--alt-autoscale",
+        "--left-axis-format", "%.1lf",
+        &"DEF:pres1={database}:pressure:AVERAGE",
+        &"DEF:pres2={database}:pressure:AVERAGE:end=00\\:00 today:start=end-24h",
+        "LINE1:pres1#000000:today",
+        "LINE1:pres2#FF0000:yesterday",
+        "SHIFT:pres2:86400",
+    )
+
+    graph(&"{base}-pressure-month.png", "Pressure", "Pascal",
+        "--end", "23:59 today",
+        "--start", "end-1month",
+        "--step", "86400",
+        "--alt-autoscale",
+        "--x-grid", "DAY:1:DAY:1:DAY:1:86400:%d",
+        "--left-axis-format", "%.1lf",
+        &"DEF:avg={database}:pressure:AVERAGE",
+        &"DEF:min={database}:pressure:MIN",
+        &"DEF:max={database}:pressure:MAX",
+        "LINE1:avg#000000:average",
+        "LINE2:min#FF0000:min",
+        "LINE3:max#00FF00:max",
+    )