roadmap.git

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119

package main

import (
	"errors"
	"fmt"
	"html"
	"io/fs"
	"log"
	"net/http"
	"os"
	"path/filepath"
	"strings"

	"github.com/rveen/ogdl"
)

type Task struct {
	Path    string
	Summary string

	Subtasks []Task
}

func main() {
	base := ""
	if len(os.Args) < 2 {
		// TODO error
		os.Exit(1)
	} else {
		base = os.Args[1]
	}

	base = filepath.Clean(base)
	router(base)
}

func router(base string) {
	http.HandleFunc("/", func(rw http.ResponseWriter, r *http.Request) {
		body := renderTasks(base, filepath.Clean(r.URL.Path))
		rw.Write([]byte(body))
	})

	http.ListenAndServe(":8080", nil)
}

func renderTasks(base, path string) string {
	if path == "/" {
		t, err := root(base)
		if err != nil {
			log.Printf("while getting task %s: %v", path, err)
			return "" // TODO render error
		}
		log.Println(t)
		return "" // TODO render task
	} else {
		t, err := task(base, path)
		if err != nil {
			log.Printf("while getting task %s: %v", path, err)
			return "" // TODO render error
		}
		fmt.Println(t)
		return "" // TODO render task
	}
}

func root(base string) ([]Task, error) {
	tasks := []Task{}
	dirEntries, err := os.ReadDir(base)
	if err != nil {
		log.Printf("while reading dir: %v", err)
		os.Exit(1)
	}

	for _, dirEntry := range dirEntries {
		if !dirEntry.IsDir() {
			task, err := readTask(base, dirEntry.Name())
			if err != nil {
				return []Task{}, fmt.Errorf("while reading dir: %v", err)
			}
			tasks = append(tasks, task)
		}
	}
	return tasks, nil
}

func task(base, path string) (Task, error) {
	task, err := readTask(base, path+".ogdl")
	if err != nil {
		return Task{}, fmt.Errorf("while reading task %s: %v", path, err)
	}
	dirEntries, err := os.ReadDir(filepath.Join(base, path))
	if err != nil {
		if errors.Is(err, fs.ErrNotExist) {
			return task, nil
		}
		return Task{}, fmt.Errorf("while reading dir: %v", err)
	}
	for _, dirEntry := range dirEntries {
		if !dirEntry.IsDir() {
			subtask, err := readTask(base, filepath.Join(path, dirEntry.Name()))
			if err != nil {
				return Task{}, fmt.Errorf("while reading subtask %s: %v", path, err)
			}
			task.Subtasks = append(task.Subtasks, subtask)
		}
	}
	return task, nil
}

func readTask(base, path string) (Task, error) {
	g := ogdl.FromFile(filepath.Join(base, path))
	if g == nil {
		return Task{}, fmt.Errorf("no such task: %s", path)
	}
	return Task{
		Path:    strings.ReplaceAll(path, ".ogdl", ""),
		Summary: g.String(),
	}, nil
}