1 files changed, 68 insertions, 0 deletions
diff --git a/config.nims b/config.nims
new file mode 100644
index 0000000..b88d310
--- /dev/null
+++ b/config.nims
@@ -0,0 +1,68 @@
+import strformat
+import strutils
+from os import `/`
+
+task build, "build tools":
+    mkdir("bin")
+    exec("nim c -o:bin/update_graphs src/update_graphs.nim")
+    exec("nim c -o:bin/update_database src/update_database.nim")
+
+task createdb, "create a new database":
+    hint("QuitCalled", false)
+
+    # This database will store the following data
+    # - 1 year worth of samples each 15 minutes
+    # - average of each day for 10 years
+    # - min of each day for 10 years
+    # - max of each day for 10 years
+
+    let
+        database = thisDir() / "database" / paramStr(2) & ".rrd"
+        step = 15 * 60
+        heartbeat = 20 * 60
+        secondsInDay = 24 * 60 * 60
+        samplesInDay = secondsInDay div step
+        secondsInYear = 365 * secondsInDay
+        samplesInYear = secondsInYear div step
+        daysIn10Years = 365 * 10
+
+    if fileExists(database):
+        echo(&"error: database '{database}' exists")
+        quit(1)
+
+    echo(&"step = {step} seconds")
+    echo(&"heartbeat = {heartbeat} seconds")
+    echo(&"samplesInYear = {samplesInYear}")
+    echo(&"samplesInDay = {samplesInDay}")
+    echo(&"daysIn10Years = {daysIn10Years}")
+
+    let args = [
+        "create", database,
+        "--start", "now",
+        "--step", $step,
+        &"DS:temperature:GAUGE:{heartbeat}:-40:40",
+        &"DS:humidity:GAUGE:{heartbeat}:0:100",
+        &"DS:pressure:GAUGE:{heartbeat}:U:U",
+        &"DS:battery:GAUGE:{heartbeat}:0:4",
+        &"RRA:AVERAGE:0.5:1:{samplesInYear}",
+        &"RRA:MIN:0.5:{samplesInDay}:{daysIn10Years}",
+        &"RRA:MAX:0.5:{samplesInDay}:{daysIn10Years}",
+        &"RRA:AVERAGE:0.5:{samplesInDay}:{daysIn10Years}",
+    ]
+
+    echo("rrdtool " & args.join(" "))
+    exec("rrdtool " & args.join(" "))
+
+task install_cgi_kapsi, "install cgi script on kapsi.fi":
+    proc modifyPath(s: string): string =
+        result = s.replace("/home/users", "/var/www/userhome")
+    let
+        databaseDir = modifyPath(thisDir() / "database")
+        updateDatabasePath = modifyPath(thisDir() / "bin" / "update_database")
+        scriptPath = paramStr(2)
+        script = &"""
+#!{updateDatabasePath}
+databaseDir = "{databaseDir}"
+"""
+
+    writeFile(scriptPath, script)