Initial commit

1 files changed, 197 insertions, 0 deletions

diff --git a/clockrotz.go b/clockrotz.go
new file mode 100644
index 0000000..a88353a
--- /dev/null
+++ b/clockrotz.go
@@ -0,0 +1,197 @@
+/* clockrotz.go: main program
+ *
+ * Copyright (C) 2016 Clemens Fries <github-clockrotz@xenoworld.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package main
+
+import (
+	"fmt"
+	"github.com/docopt/docopt.go"
+	"os"
+	"os/user"
+	"path/filepath"
+	"github.com/githubert/clockrotz/cmd"
+	. "github.com/githubert/clockrotz/common"
+)
+
+
+var usageMain =
+// tag::main[]
+`
+Usage:
+  clockrotz [options] <command> [<args>...]
+
+Options:
+  --workdir=WORKDIR  Working directory, defaults to $HOME/clockrotz
+  --config=CONFIG    Use the given INI file instead of .config/clockrotz.ini
+  --help             Show this help.
+
+The following commands are available:
+  next    Show messages due in the next days.
+  check   Check if a message is complete.
+  debug   Print the effective configuration for a message, and the resulting
+          email message.
+  create  Open a new message in an editor.
+  run     Send out pending messages.
+` // end::main[]
+
+var defaultConf = Configuration{
+	Data: map[string]string{
+		CONF_DAYS:        "7",
+		CONF_SMTP_PORT:   "587",
+		CONF_SMTP_SERVER: "localhost",
+		CONF_NOT_BEFORE:  "00:00",
+		CONF_NOT_AFTER:   "23:59",
+	},
+}
+
+
+// Retrieve the user's home directory.
+func userHome() string {
+	u, err := user.Current()
+
+	// I don't think we can go on without finding the user's home directory
+	if err != nil {
+		panic(err)
+	}
+
+	return u.HomeDir
+}
+
+// Retrieve the user's config home, which is either defined through the environment variable
+// `XDG_CONFIG_HOME` or is assumed to be a folder called `.config` in the user's home
+// directory (as retrieved by `userHome()`).
+func configHome() string {
+	value, present := os.LookupEnv("XDG_CONFIG_HOME")
+
+	configHome := value
+
+	if !present || value == "" || !filepath.IsAbs(value) {
+		configHome = filepath.Join(userHome(), ".config")
+	}
+
+	return configHome
+}
+
+// Expand `~/`, if the working directory begins with it.
+func expandTilde(conf *Configuration) {
+	workdir := conf.Get(CONF_WORKDIR)
+
+	if len(workdir) > 1 && workdir[0:2] == "~/" {
+		conf.Set(CONF_WORKDIR, filepath.Join(userHome(), workdir[2:]))
+	} else if len(workdir) == 1 && workdir == "~" {
+		conf.Set(CONF_WORKDIR, userHome())
+	}
+}
+
+// This will create all necessary folders in the working directory.
+func createFolders(workdir string) error {
+	for _, dir := range []string{DIR_TODO, DIR_DONE, DIR_ERRORS, DIR_DRAFTS} {
+		err := os.MkdirAll(filepath.Join(workdir, dir), 0777)
+
+		if err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+// Complain about files in DIR_ERRORS.
+func alertIfErrors(workdir string) {
+	errorsDir := filepath.Join(workdir, DIR_ERRORS)
+
+	count := 0
+
+	filepath.Walk(errorsDir, func(_ string, info os.FileInfo, _ error) error {
+		if info.Mode().IsRegular() {
+			count++
+		}
+
+		return nil
+	})
+
+	if count > 0 {
+		fmt.Println("There were failed messages.")
+		fmt.Printf("Please inspect the contents of the %s/ directory.\n", DIR_ERRORS)
+	}
+}
+
+func main() {
+	userHome := userHome()
+
+	// This is the configuration that will be cobbled together from the
+	// default configuration ('defaultConf'), the INI and the command line
+	// arguments.
+	sessionConf := NewConfiguration()
+
+	sessionConf.MergeWith(&defaultConf)
+
+	args, _ := docopt.Parse(usageMain, nil, true, "", true)
+
+	// Determine configuration file name, defaults to `clockrotz.ini` in
+	// the user's config home (usually `.config`).
+	if args["--config"] != nil {
+		sessionConf.Set(CONF_CONFIG_FILENAME, args["--config"].(string))
+	} else {
+		sessionConf.Set(CONF_CONFIG_FILENAME, filepath.Join(configHome(), "clockrotz.ini"))
+	}
+
+	// Determine the desired command (run, next, ...)
+	command := args["<command>"].(string)
+
+	// Load INI configuration. This will merge the '[default]' section with
+	// the optional section named after the desired command ('cmd').
+	sessionConf.MergeWithIni(command)
+
+	// Determine working directory, defaults to the folder `clockrotz` in
+	// the user's home directory. '--workdir' on the command line takes
+	// precedence over the 'workdir' in the INI.
+	if args["--workdir"] != nil {
+		sessionConf.Set(CONF_WORKDIR, args["--workdir"].(string))
+	} else {
+		// If no working directory is set in the INI...
+		if sessionConf.Get(CONF_WORKDIR) == "" {
+			sessionConf.Set(CONF_WORKDIR, filepath.Join(userHome, "clockrotz"))
+		}
+	}
+
+	// Expand the `~/` in workdir.
+	expandTilde(sessionConf)
+
+	// Make sure that all necessary folders exist.
+	createFolders(sessionConf.Get(CONF_WORKDIR))
+
+	// See if there are files in DIR_ERRORS and alert the user.
+	alertIfErrors(sessionConf.Get(CONF_WORKDIR))
+
+	commandArgs  := []string{command}
+	commandArgs = append(commandArgs, args["<args>"].([]string)...)
+
+	switch command {
+	case "next":
+		cmd.Next(commandArgs, sessionConf)
+	case "create":
+		cmd.Create(commandArgs, sessionConf)
+	case "check":
+		cmd.Check(commandArgs, sessionConf)
+	case "run":
+		cmd.Run(commandArgs, sessionConf)
+	case "debug":
+		cmd.Debug(commandArgs, sessionConf)
+	}
+}
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