Merge pull request #14 from bouncepaw/13mycelia

13mycelia

README.md

@@ -1,2 +1,6 @@
 # mycorrhiza wiki
-Simple wiki engine inspired by fungi.
+A wiki engine inspired by fungi.
+
+Current version: 0.5.
+
+Not production-ready.

cfg/config.go

@@ -8,17 +8,23 @@ import (
 	"path/filepath"
 )
 
+type MyceliumConfig struct {
+	Names []string `json:"names"`
+	Type  string   `json:"type"`
+}
+
 const (
 	HyphaPattern    = `[^\s\d:/?&\\][^:?&\\]*`
 	HyphaUrl        = `/{hypha:` + HyphaPattern + `}`
 	RevisionPattern = `[\d]+`
 	RevQuery        = `{rev:` + RevisionPattern + `}`
+	MyceliumPattern = `[^\s\d:/?&\\][^:?&\\/]*`
+	MyceliumUrl     = `/:{mycelium:` + MyceliumPattern + `}`
 )
 
 var (
 	DescribeHyphaHerePattern = "Describe %s here"
 	WikiDir                  string
-	TemplatesDir             string
 	configJsonPath           string
 
 	// Default values that can be overriden in config.json
@@ -28,24 +34,25 @@ var (
 	GenericErrorMsg   = `<b>Sorry, something went wrong</b>`
 	SiteTitle         = `MycorrhizaWiki`
 	Theme             = `default-light`
+	Mycelia           = []MyceliumConfig{
+		{[]string{"main"}, "main"},
+		{[]string{"sys", "system"}, "system"},
+	}
 )
 
 func InitConfig(wd string) bool {
 	log.Println("WikiDir is", wd)
 	WikiDir = wd
-	TemplatesDir = "Templates"
+	configJsonPath = filepath.Join(WikiDir, "config.json")
-	configJsonPath = filepath.Join(filepath.Dir(WikiDir), "config.json")
 
 	if _, err := os.Stat(configJsonPath); os.IsNotExist(err) {
 		log.Println("config.json not found, using default values")
-	} else {
+		return false
+	}
 	log.Println("config.json found, overriding default values...")
 	return readConfig()
 }
 
-	return true
-}
-
 func readConfig() bool {
 	configJsonContents, err := ioutil.ReadFile(configJsonPath)
 	if err != nil {
@@ -57,6 +64,7 @@ func readConfig() bool {
 		Address        string           `json:"address"`
 		Theme          string           `json:"theme"`
 		SiteTitle      string           `json:"site-title"`
+		Mycelia        []MyceliumConfig `json:"mycelia"`
 		TitleTemplates struct {
 			EditHypha string `json:"edit-hypha"`
 			ViewHypha string `json:"view-hypha"`
@@ -74,6 +82,7 @@ func readConfig() bool {
 	SiteTitle = cfg.SiteTitle
 	TitleEditTemplate = cfg.TitleTemplates.EditHypha
 	TitleTemplate = cfg.TitleTemplates.ViewHypha
+	Mycelia = cfg.Mycelia
 
 	return true
 }

fs/data.go

@@ -10,14 +10,19 @@ import (
 	"strings"
 
 	"github.com/bouncepaw/mycorrhiza/cfg"
+	"github.com/bouncepaw/mycorrhiza/util"
 )
 
 func (h *Hypha) MetaJsonPath() string {
 	return filepath.Join(h.Path(), "meta.json")
 }
 
+func (h *Hypha) CanonicalName() string {
+	return util.UrlToCanonical(h.FullName)
+}
+
 func (h *Hypha) Path() string {
-	return filepath.Join(cfg.WikiDir, h.FullName)
+	return filepath.Join(cfg.WikiDir, h.CanonicalName())
 }
 
 func (h *Hypha) TextPath() string {
@@ -25,7 +30,7 @@ func (h *Hypha) TextPath() string {
 }
 
 func (h *Hypha) parentName() string {
-	return filepath.Dir(h.FullName)
+	return filepath.Dir(util.UrlToCanonical(h.FullName))
 }
 
 // hasBinaryData returns true if the revision has any binary data associated.

fs/fs.go

@@ -54,6 +54,3 @@ func (s *Storage) indexHyphae(path string) {
 		}
 	}
 }
-
-func (h *Hypha) Close() {
-}

fs/genealogy.go

@@ -6,6 +6,8 @@ import (
 	"path/filepath"
 	"sort"
 	"strings"
+
+	"github.com/bouncepaw/mycorrhiza/util"
 )
 
 func (s *Storage) RenderHypha(h *Hypha) {
@@ -24,6 +26,7 @@ type Tree struct {
 // It can also generate trees for non-existent hyphae, that's why we use `name string` instead of making it a method on `Hypha`.
 // In `root` is `false`, siblings will not be fetched.
 func (s *Storage) GetTree(name string, root bool) *Tree {
+	name = util.UrlToCanonical(name)
 	t := &Tree{Name: name, Root: root}
 	for hyphaName, _ := range s.paths {
 		s.compareNamesAndAppend(t, hyphaName)
@@ -65,14 +68,14 @@ func (t *Tree) AsHtml() (html string) {
 	html += `<ul class="navitree__node">`
 	if t.Root {
 		for _, ancestor := range t.Ancestors {
-			html += navitreeEntry(ancestor, "navitree__ancestor")
+			html += navitreeEntry(util.CanonicalToDisplay(ancestor), "navitree__ancestor")
 		}
 		for _, siblingName := range t.Siblings {
-			html += navitreeEntry(siblingName, "navitree__sibling")
+			html += navitreeEntry(util.CanonicalToDisplay(siblingName), "navitree__sibling")
 		}
-		html += navitreeEntry(t.Name, "navitree__pagename")
+		html += navitreeEntry(util.CanonicalToDisplay(t.Name), "navitree__pagename")
 	} else {
-		html += navitreeEntry(t.Name, "navitree__name")
+		html += navitreeEntry(util.CanonicalToDisplay(t.Name), "navitree__name")
 	}
 
 	for _, subtree := range t.Descendants {
@@ -89,5 +92,5 @@ func navitreeEntry(name, class string) string {
 	return fmt.Sprintf(`<li class="navitree__entry %s">
 	<a class="navitree__link" href="/%s">%s</a>
 </li>
-`, class, name, filepath.Base(name))
+`, class, ":"+util.DisplayToCanonical(name), filepath.Base(name))
 }

fs/html.go

@@ -6,6 +6,7 @@ import (
 	"io/ioutil"
 	"log"
 
+	"github.com/bouncepaw/mycorrhiza/util"
 	"gopkg.in/russross/blackfriday.v2"
 )
 
@@ -20,7 +21,7 @@ func (h *Hypha) asHtml() (string, error) {
 `
 	// What about using <figure>?
 	if h.hasBinaryData() {
-		ret += fmt.Sprintf(`<img src="/%s?action=binary&rev=%d" class="page__amnt"/>`, rev.FullName, rev.Id)
+		ret += fmt.Sprintf(`<img src="/:%s?action=binary&rev=%d" class="page__amnt"/>`, util.DisplayToCanonical(rev.FullName), rev.Id)
 	}
 
 	contents, err := ioutil.ReadFile(rev.TextPath)

fs/hypha.go

@@ -12,7 +12,8 @@ import (
 	"strings"
 	"time"
 
-	"github.com/bouncepaw/mycorrhiza/cfg"
+	"github.com/bouncepaw/mycorrhiza/mycelium"
+	"github.com/bouncepaw/mycorrhiza/util"
 )
 
 type Hypha struct {
@@ -22,8 +23,8 @@ type Hypha struct {
 	Deleted   bool                 `json:"deleted"`
 	Revisions map[string]*Revision `json:"revisions"`
 	actual    *Revision            `json:"-"`
-	Invalid   bool
+	Invalid   bool                 `json:"-"`
-	Err       error
+	Err       error                `json:"-"`
 }
 
 func (h *Hypha) Invalidate(err error) *Hypha {
@@ -32,10 +33,20 @@ func (h *Hypha) Invalidate(err error) *Hypha {
 	return h
 }
 
-func (s *Storage) Open(name string) *Hypha {
+func (s *Storage) OpenFromMap(m map[string]string) *Hypha {
+	name := mycelium.NameWithMyceliumInMap(m)
+	h := s.open(name)
+	if rev, ok := m["rev"]; ok {
+		return h.OnRevision(rev)
+	}
+	return h
+}
+
+func (s *Storage) open(name string) *Hypha {
+	name = util.UrlToCanonical(name)
 	h := &Hypha{
 		Exists:   true,
-		FullName: name,
+		FullName: util.CanonicalToDisplay(name),
 	}
 	path, ok := s.paths[name]
 	// This hypha does not exist yet
@@ -109,6 +120,7 @@ func (h *Hypha) ActionRaw(w http.ResponseWriter) *Hypha {
 	if h.Invalid {
 		return h
 	}
+	if h.Exists {
 		fileContents, err := ioutil.ReadFile(h.actual.TextPath)
 		if err != nil {
 			return h.Invalidate(err)
@@ -116,6 +128,10 @@ func (h *Hypha) ActionRaw(w http.ResponseWriter) *Hypha {
 		w.Header().Set("Content-Type", h.mimeTypeForActionRaw())
 		w.WriteHeader(http.StatusOK)
 		w.Write(fileContents)
+	} else {
+		log.Println("Hypha", h.FullName, "has no actual revision")
+		w.WriteHeader(http.StatusNotFound)
+	}
 	return h
 }
 
@@ -125,6 +141,7 @@ func (h *Hypha) ActionBinary(w http.ResponseWriter) *Hypha {
 	if h.Invalid {
 		return h
 	}
+	if h.Exists {
 		fileContents, err := ioutil.ReadFile(h.actual.BinaryPath)
 		if err != nil {
 			return h.Invalidate(err)
@@ -132,6 +149,10 @@ func (h *Hypha) ActionBinary(w http.ResponseWriter) *Hypha {
 		w.Header().Set("Content-Type", h.actual.BinaryMime)
 		w.WriteHeader(http.StatusOK)
 		w.Write(fileContents)
+	} else {
+		log.Println("Hypha", h.FullName, "has no actual revision")
+		w.WriteHeader(http.StatusNotFound)
+	}
 	return h
 }
 
@@ -181,7 +202,7 @@ func (h *Hypha) CreateDirIfNeeded() *Hypha {
 		return h
 	}
 	// os.MkdirAll created dir if it is not there. Basically, checks it for us.
-	err := os.MkdirAll(filepath.Join(cfg.WikiDir, h.FullName), os.ModePerm)
+	err := os.MkdirAll(h.Path(), os.ModePerm)
 	if err != nil {
 		h.Invalidate(err)
 	}
@@ -313,7 +334,7 @@ func (h *Hypha) SaveJson() *Hypha {
 // Store adds `h` to the `Hs` if it is not already there
 func (h *Hypha) Store() *Hypha {
 	if !h.Invalid {
-		Hs.paths[h.FullName] = h.Path()
+		Hs.paths[h.CanonicalName()] = h.Path()
 	}
 	return h
 }

handlers.go

@@ -14,7 +14,7 @@ import (
 // Boilerplate code present in many handlers. Good to have it.
 func HandlerBase(w http.ResponseWriter, rq *http.Request) *fs.Hypha {
 	vars := mux.Vars(rq)
-	return fs.Hs.Open(vars["hypha"]).OnRevision(RevInMap(vars))
+	return fs.Hs.OpenFromMap(vars).OnRevision(RevInMap(vars))
 }
 
 func HandlerRaw(w http.ResponseWriter, rq *http.Request) {
@@ -41,7 +41,7 @@ func HandlerView(w http.ResponseWriter, rq *http.Request) {
 
 func HandlerEdit(w http.ResponseWriter, rq *http.Request) {
 	vars := mux.Vars(rq)
-	h := fs.Hs.Open(vars["hypha"]).OnRevision("0")
+	h := fs.Hs.OpenFromMap(vars).OnRevision("0")
 	w.Header().Set("Content-Type", "text/html;charset=utf-8")
 	w.WriteHeader(http.StatusOK)
 	w.Write(render.HyphaEdit(h))
@@ -51,7 +51,7 @@ func HandlerUpdate(w http.ResponseWriter, rq *http.Request) {
 	vars := mux.Vars(rq)
 	log.Println("Attempt to update hypha", vars["hypha"])
 	h := fs.Hs.
-		Open(vars["hypha"]).
+		OpenFromMap(vars).
 		CreateDirIfNeeded().
 		AddRevisionFromHttpData(rq).
 		WriteTextFileFromHttpData(rq).

main.go

@@ -10,6 +10,7 @@ import (
 
 	"github.com/bouncepaw/mycorrhiza/cfg"
 	"github.com/bouncepaw/mycorrhiza/fs"
+	"github.com/bouncepaw/mycorrhiza/mycelium"
 	"github.com/gorilla/mux"
 )
 
@@ -22,6 +23,25 @@ func RevInMap(m map[string]string) string {
 	return "0"
 }
 
+func IdempotentRouterBoiler(router *mux.Router, action string, handler func(w http.ResponseWriter, rq *http.Request)) {
+	router.
+		Queries("action", action, "rev", cfg.RevQuery).
+		Path(cfg.MyceliumUrl + cfg.HyphaUrl).
+		HandlerFunc(handler)
+	router.
+		Queries("action", action).
+		Path(cfg.MyceliumUrl + cfg.HyphaUrl).
+		HandlerFunc(handler)
+	router.
+		Queries("action", action, "rev", cfg.RevQuery).
+		Path(cfg.HyphaUrl).
+		HandlerFunc(handler)
+	router.
+		Queries("action", action).
+		Path(cfg.HyphaUrl).
+		HandlerFunc(handler)
+}
+
 func main() {
 	if len(os.Args) == 1 {
 		panic("Expected a root wiki pages directory")
@@ -34,6 +54,7 @@ func main() {
 	log.Println("Welcome to MycorrhizaWiki α")
 	cfg.InitConfig(wikiDir)
 	log.Println("Indexing hyphae...")
+	mycelium.Init()
 	fs.InitStorage()
 
 	// Start server code. See handlers.go for handlers' implementations.
@@ -43,32 +64,22 @@ func main() {
 		http.ServeFile(w, rq, filepath.Join(filepath.Dir(cfg.WikiDir), "favicon.ico"))
 	})
 
-	r.Queries("action", "binary", "rev", cfg.RevQuery).Path(cfg.HyphaUrl).
+	IdempotentRouterBoiler(r, "binary", HandlerBinary)
-		HandlerFunc(HandlerBinary)
+	IdempotentRouterBoiler(r, "raw", HandlerRaw)
-	r.Queries("action", "binary").Path(cfg.HyphaUrl).
+	IdempotentRouterBoiler(r, "zen", HandlerZen)
-		HandlerFunc(HandlerBinary)
+	IdempotentRouterBoiler(r, "view", HandlerView)
-
-	r.Queries("action", "raw", "rev", cfg.RevQuery).Path(cfg.HyphaUrl).
-		HandlerFunc(HandlerRaw)
-	r.Queries("action", "raw").Path(cfg.HyphaUrl).
-		HandlerFunc(HandlerRaw)
-
-	r.Queries("action", "zen", "rev", cfg.RevQuery).Path(cfg.HyphaUrl).
-		HandlerFunc(HandlerZen)
-	r.Queries("action", "zen").Path(cfg.HyphaUrl).
-		HandlerFunc(HandlerZen)
-
-	r.Queries("action", "view", "rev", cfg.RevQuery).Path(cfg.HyphaUrl).
-		HandlerFunc(HandlerView)
-	r.Queries("action", "view").Path(cfg.HyphaUrl).
-		HandlerFunc(HandlerView)
 
+	r.Queries("action", "edit").Path(cfg.MyceliumUrl + cfg.HyphaUrl).
+		HandlerFunc(HandlerEdit)
 	r.Queries("action", "edit").Path(cfg.HyphaUrl).
 		HandlerFunc(HandlerEdit)
 
-	r.Queries("action", "update").Path(cfg.HyphaUrl).Methods("POST").
+	r.Queries("action", "update").Path(cfg.MyceliumUrl + cfg.HyphaUrl).
-		HandlerFunc(HandlerUpdate)
+		Methods("POST").HandlerFunc(HandlerUpdate)
+	r.Queries("action", "update").Path(cfg.HyphaUrl).
+		Methods("POST").HandlerFunc(HandlerUpdate)
 
+	r.HandleFunc(cfg.MyceliumUrl+cfg.HyphaUrl, HandlerView)
 	r.HandleFunc(cfg.HyphaUrl, HandlerView)
 
 	// Debug page that renders all hyphae.

mycelium/mycelium.go

@@ -0,0 +1,107 @@
+package mycelium
+
+import (
+	"io/ioutil"
+	"log"
+	"strings"
+
+	"github.com/bouncepaw/mycorrhiza/cfg"
+)
+
+var (
+	MainMycelium   string
+	SystemMycelium string
+)
+
+func gatherDirNames(path string) map[string]struct{} {
+	res := make(map[string]struct{})
+	nodes, err := ioutil.ReadDir(path)
+	if err != nil {
+		log.Fatal(err)
+	}
+	for _, node := range nodes {
+		if node.IsDir() {
+			res[node.Name()] = struct{}{}
+		}
+	}
+	return res
+}
+
+// Add values to the set. If a value is already there, return false.
+func addInUniqueSet(set map[string]struct{}, names []string) bool {
+	ok := true
+	for _, name := range names {
+		if _, present := set[name]; present {
+			ok = false
+		}
+		set[name] = struct{}{}
+	}
+	return ok
+}
+
+func Init() {
+	var (
+		// Used to check if there are no duplicates
+		foundNames    = make(map[string]struct{})
+		dirs          = gatherDirNames(cfg.WikiDir)
+		mainPresent   bool
+		systemPresent bool
+	)
+	for _, mycelium := range cfg.Mycelia {
+		switch mycelium.Type {
+		case "main":
+			mainPresent = true
+			MainMycelium = mycelium.Names[0]
+		case "system":
+			systemPresent = true
+			SystemMycelium = mycelium.Names[0]
+		}
+		// Check if there is a dir corresponding to the mycelium
+		if _, ok := dirs[mycelium.Names[0]]; !ok {
+			log.Fatal("No directory found for mycelium " + mycelium.Names[0])
+		}
+		// Confirm uniqueness of names
+		if ok := addInUniqueSet(foundNames, mycelium.Names); !ok {
+			log.Fatal("At least one name was used more than once for mycelia")
+		}
+	}
+	if !mainPresent {
+		log.Fatal("No `main` mycelium given in config.json")
+	}
+	if !systemPresent {
+		log.Fatal("No `system` mycelium given in config.json")
+	}
+	log.Println("Mycelial dirs are present")
+}
+
+func NameWithMyceliumInMap(m map[string]string) (res string) {
+	var (
+		hyphaName, okH = m["hypha"]
+		mycelName, okM = m["mycelium"]
+	)
+	log.Println(m)
+	if !okH {
+		// It will result in an error when trying to open a hypha with such name
+		return ":::"
+	}
+	if okM {
+		res = canonicalMycelium(mycelName)
+	} else {
+		res = MainMycelium
+	}
+	return res + "/" + hyphaName
+}
+
+func canonicalMycelium(name string) string {
+	log.Println("Determining canonical mycelial name for", name)
+	name = strings.ToLower(name)
+	for _, mycel := range cfg.Mycelia {
+		for _, mycelName := range mycel.Names {
+			if mycelName == name {
+				return mycel.Names[0]
+			}
+		}
+	}
+	// This is a nonexistent mycelium. Return a name that will trigger an error
+	return ":error:"
+}

render/render.go

@@ -8,6 +8,7 @@ import (
 
 	"github.com/bouncepaw/mycorrhiza/cfg"
 	"github.com/bouncepaw/mycorrhiza/fs"
+	"github.com/bouncepaw/mycorrhiza/mycelium"
 )
 
 // HyphaEdit renders hypha editor.
@@ -29,7 +30,7 @@ func HyphaEdit(h *fs.Hypha) []byte { //
 
 // HyphaUpdateOk is used to inform that update was successful.
 func HyphaUpdateOk(h *fs.Hypha) []byte { //
-	return layout("updateOk").
+	return layout("update_ok").
 		withMap(map[string]string{"Name": h.FullName}).
 		Bytes()
 }
@@ -56,6 +57,9 @@ func hyphaGeneric(name, content, templateName string) []byte {
 
 // wrapInBase is used to wrap layouts in things that are present on all pages.
 func (lyt *Layout) wrapInBase(keys map[string]string) []byte {
+	if lyt.invalid {
+		return lyt.Bytes()
+	}
 	page := map[string]string{
 		"Title":     cfg.SiteTitle,
 		"Main":      "",
@@ -82,7 +86,12 @@ type Layout struct {
 }
 
 func layout(name string) *Layout {
-	h := fs.Hs.Open(path.Join(cfg.TemplatesDir, cfg.Theme, name+".html")).OnRevision("0")
+	lytName := path.Join("theme", cfg.Theme, name+".html")
+	h := fs.Hs.OpenFromMap(map[string]string{
+		"mycelium": mycelium.SystemMycelium,
+		"hypha":    lytName,
+		"rev":      "0",
+	})
 	if h.Invalid {
 		return &Layout{nil, nil, true, h.Err}
 	}

util/util.go

@@ -0,0 +1,49 @@
+package util
+
+import (
+	"strings"
+	"unicode"
+)
+
+func addColonPerhaps(name string) string {
+	if strings.HasPrefix(name, ":") {
+		return name
+	}
+	return ":" + name
+}
+
+func removeColonPerhaps(name string) string {
+	if strings.HasPrefix(name, ":") {
+		return name[1:]
+	}
+	return name
+}
+
+func UrlToCanonical(name string) string {
+	return removeColonPerhaps(
+		strings.ToLower(strings.ReplaceAll(name, " ", "_")))
+}
+
+func DisplayToCanonical(name string) string {
+	return removeColonPerhaps(
+		strings.ToLower(strings.ReplaceAll(name, " ", "_")))
+}
+
+func CanonicalToDisplay(name string) (res string) {
+	tmp := strings.Title(name)
+	var afterPoint bool
+	for _, ch := range tmp {
+		if afterPoint {
+			afterPoint = false
+			ch = unicode.ToLower(ch)
+		}
+		switch ch {
+		case '.':
+			afterPoint = true
+		case '_':
+			ch = ' '
+		}
+		res += string(ch)
+	}
+	return addColonPerhaps(res)
+}

w/config.json

@@ -1,9 +0,0 @@
-{
-	"address": "127.0.0.1:1737", 
-	"theme": "default-light", 
-	"site-title": "🍄 MycorrhizaWiki", 
-	"title-templates": {
-		"edit-hypha": "Edit %s at MycorrhizaWiki", 
-		"view-hypha": "%s at MycorrhizaWiki"
-	}
-}

w/m/Templates/default-light/edit/index.html/1.html

@@ -1,11 +0,0 @@
-<div class="naviwrapper">
-	<form class="naviwrapper__edit edit-box"
-	      method="POST"
-	      enctype="multipart/form-data"
-	      action="?action=update">
-		<h4>Edit box</h4>
-		<!-- It is important that there is no indent ↓ -->
-		<textarea class="edit-box__text" name="text">
-{{ .Text }}</textarea>
-	</form>
-</div>

w/m/Templates/default-light/edit/sidebar.html/1.html

@@ -1,21 +0,0 @@
-<div style=""><h4>Text MIME-type</h4>
-<p>Good types are <code>text/markdown</code> and <code>text/plain</code></p>
-<input type="text" name="text_mime" value="{{ .TextMime }}" form="edit-form"/>
-
-<h4>Revision comment</h4>
-<p>Please make your comment helpful</p>
-<input type="text" name="comment" value="Update {{ .Name }}" form="edit-form"/>
-
-<h4>Edit tags</h4>
-<p>Tags are separated by commas, whitespace is ignored</p>
-<input type="text" name="tags" value="{{ .Tags }}" form="edit-form"/>
-
-<h4>Upload file</h4>
-<p>If this hypha has a file like that, the text above is meant to be a description of it</p>
-<input type="file" name="binary" form="edit-form"/>
-
-<p>
-	<input type="submit" value="update" form="edit-form"/>
-	<a href="?">Cancel</a>
-</p>
-</div>

w/m/Templates/default-light/view/404.html/1.html

@@ -1,4 +0,0 @@
-<h1 class="page__title">{{ . }}</h1>
-<p class="msg_hypha-does-not-exist msg">
-The hypha you are trying to access does not exist yet. Why not <a href="?action=edit">create</a> it?
-</p>

wiki/config.json

@@ -0,0 +1,31 @@
+{
+	"address": "127.0.0.1:1737", 
+	"theme": "default-light", 
+	"site-title": "🍄 MycorrhizaWiki", 
+	"title-templates": {
+		"edit-hypha": "Edit %s at MycorrhizaWiki", 
+		"view-hypha": "%s at MycorrhizaWiki"
+	}, 
+	"mycelia": [
+		{
+			"names": ["main"],
+			"type": "main"
+		},
+		{
+			"names": ["sys", "system"], 
+			"type": "system"
+		},
+		{
+			"names": ["spec", "special"], 
+			"type": "special"
+		},
+		{
+			"names": ["user","u"], 
+			"type": "user" 
+		}, 
+		{ 
+			"names": ["tag", "t"], 
+			"type": "tag" 
+		}
+	]
+}

wiki/main/help/1.markdown

@@ -0,0 +1 @@
+# Help

wiki/main/help/meta.json

@@ -6,10 +6,10 @@
 			"tags": [
 				""
 			],
-			"name": "Templates",
+			"name": "Help",
-			"comment": "Update Templates",
+			"comment": "Update Help",
 			"author": "",
-			"time": 1593194769,
+			"time": 1593540573,
 			"text_mime": "text/markdown",
 			"binary_mime": "",
 			"text_name": "1.markdown",

wiki/main/help/mycelia/1.markdown

@@ -0,0 +1,85 @@
+In MycorrhizaWiki **mycelia** are used to organize [hyphae](hyphae) in related namespaces.
+
+## Mycelium traits
+- Every mycelium has any number (0..∞) of hyphae.
+- Every hypha is part of one mycelium.
+- Every mycelium has one canonical name and any number of synonyms.
+- Every wiki has one main mycelium.
+- They are named by the same scheme as hyphae but they have a colon prefix.
+
+## Mycelium URL
+- Address a hypha in a particular mycelium: `/:sys/about`.
+- Address subpage of the hypha above: `/:sys/about/more`
+- Address a hypha in the main mycelium: `/How/does it work`.
+- Address a hypha in the main mycelium explicitly: `/:main/How/does it work`.
+
+## Mycelium configuration
+In your `config.json`, in `"mycelia"` field there is an array of objects.
+
+```
+{
+	...
+	"mycelia": [
+		{
+			"names": ["main"],
+			"type": "main"
+		},
+		{
+			"names": ["sys", "system"], 
+			"type": "system"
+		},
+		{
+			"names": ["spec", "special"], 
+			"type": "special"
+		},
+		{
+			"names": ["user","u"], 
+			"type": "user" 
+		}, 
+		{ 
+			"names": ["tag", "t"], 
+			"type": "tag" 
+		}
+	]
+	...
+}
+```
+
+Each object reprents a mycelium. You can set all their names there. First name in each `"names"` array is a canonical name for the mycelium.
+
+Field `"type"` sets the mycelium's type. There are such types:
+
+| **Type** | **Description** |
+| `main`   | The main mycelium. There must be exactly one such mycelium in a wiki. |
+| `system` | Things like scripts, styles and templates go here. There must be exactly one such mycelium in a wiki. |
+| `special` | Things like utility hyphae and plugin pages go here. It is optional because there are no hyphae or plugins now. |
+| `user` | Userpages. It is optional because there are no users now. |
+| `tag` | Pages describing tags. It is optional because there are no tags now. |
+| `other` | Mycelia without any additional meaning added by the engine. There can be any number of them. |
+
+## How are they stored in the filesystem.
+For example, `wiki` is your wiki directory and you have configured the mycelia like in the example above. You should have structure like that:
+
+```
+wiki/
+	config.json	← your configuration
+	favicon.ico	← your site icon
+	main/	← :main, <empty prefix>
+		...most of content goes here
+	sys/	← :sys
+		...themes go here
+	spec/	← :spec
+		...something goes here
+	user/	← :user, :u
+		...user pages go here
+	tag/	← :tag, :t
+		...pages describing tags go here
+```
+
+There are usual hypha directories inside those mycelial directories.
+
+## Code
+- Things related to reading the `config.json` go to the `cfg` module.
+- Most of code related to mycelia is in the `fs` module.
+- And also check out `handlers.go` and `main.go` for routing of mycelia.
+

wiki/main/help/mycelia/meta.json

@@ -0,0 +1,21 @@
+{
+	"views": 0,
+	"deleted": false,
+	"revisions": {
+		"1": {
+			"tags": [
+				""
+			],
+			"name": "Mycelia",
+			"comment": "Update Help/Mycelia",
+			"author": "",
+			"time": 1593541268,
+			"text_mime": "text/markdown",
+			"binary_mime": "",
+			"text_name": "1.markdown",
+			"binary_name": ""
+		}
+	},
+	"Invalid": false,
+	"Err": null
+}

wiki/sys/theme/2.markdown

@@ -0,0 +1,11 @@
+# Themes
+
+In MycorrhizaWiki, themes are used to specify what is shown to a user, the front-end. So, a theme consists of:
+
+- **HTML templates.** Data is inserted into them.
+- **CSS.**
+- **JS.**
+
+Your HTML template structure must be identical to the one. You can include any CSS and JS in your themes.
+
+See [default-light](:sys/theme/default-light) theme for more information. This is the only theme that is guaranteed to work.

wiki/sys/theme/3.markdown

@@ -0,0 +1,11 @@
+# Themes
+
+In MycorrhizaWiki, themes are used to specify what is shown to a user, the front-end. So, a theme consists of:
+
+- **HTML templates.** Data is inserted into them.
+- **CSS.**
+- **JS.**
+
+Your HTML template structure must be identical to the one. You can include any CSS and JS in your themes.
+
+See [default-light](/:sys/theme/default-light) theme for more information. This is the only theme that is guaranteed to work.

wiki/sys/theme/default-light/base.html/1.html

@@ -1,7 +1,7 @@
 <html>
 	<head>
 		<title>{{ .Title }}</title>
-		<link rel="stylesheet" href="/Templates/default-light/main.css?action=raw">
+		<link rel="stylesheet" href="/:sys/theme/default-light/main.css?action=raw">
 	</head>
 	<body>
 		<header class="header">
@@ -20,6 +20,6 @@
 		<footer>
 			<p>This website runs <a href='https://github.com/bouncepaw/mycorrhiza'>MycorrhizaWiki</a></p>
 		</footer>
-		<script src="/Templates/default-light/main.js?action=raw"></script>
+		<script src="/:sys/theme/default-light/main.js?action=raw"></script>
 	</body>
 </html>

wiki/sys/theme/default-light/edit/index.html/1.html

@@ -0,0 +1,11 @@
+<form class="edit-box"
+      method="POST"
+      enctype="multipart/form-data"
+      action="?action=update"
+      id="edit-form">
+	<h4>Edit box</h4>
+	<!-- It is important that there is no indent ↓ -->
+	<textarea class="edit-box__text" name="text">
+{{ .Text }}</textarea>
+</form>
+

wiki/sys/theme/default-light/edit/sidebar.html/1.html

@@ -0,0 +1,22 @@
+<div>
+	<h4>Text MIME-type</h4>
+	<p>Good types are <code>text/markdown</code> and <code>text/plain</code></p>
+	<input type="text" name="text_mime" value="{{ .TextMime }}" form="edit-form"/>
+
+	<h4>Revision comment</h4>
+	<p>Please make your comment helpful</p>
+	<input type="text" name="comment" value="Update {{ .Name }}" form="edit-form"/>
+
+	<h4>Edit tags</h4>
+	<p>Tags are separated by commas, whitespace is ignored</p>
+<input type="text" name="tags" value="{{ .Tags }}" form="edit-form"/>
+
+	<h4>Upload file</h4>
+	<p>If this hypha has a file like that, the text above is meant to be a description of it</p>
+	<input type="file" name="binary" form="edit-form"/>
+
+	<p>
+		<input type="submit" value="update" form="edit-form"/>
+		<a href="?">Cancel</a>
+	</p>
+</div>

wiki/sys/theme/default-light/main.css/1.css

@@ -12,12 +12,13 @@ header a, header a:visited { color: black; text-decoration:none; }
 header a:active, header a:hover { color: #005f87; }
 
 h1, h2, h3, h4, h5, h6 { margin: 0.5em 0 0.25em; }
+code { background-color: #f4f4f4; }
 .page { line-height: 1.666; max-width: 40rem; hyphens: auto; }
 .page img { max-width:100%; }
-.page pre { white-space: break-spaces; }
+.page pre { white-space: break-spaces; background-color: #f4f4f4; }
 .page__title { font-size: 2rem; margin: 0; }
 
-footer { padding: 1rem 0; font-size: .8rem; bottom: 0; position: absolute; }
+footer { padding: 1rem 0; font-size: .8rem; }
 footer a, footer a:visited { color: black; }
 /* Sidebar section */
 .sidebar { padding: 1rem 0; background: #f4f4f4; }

wiki/sys/theme/default-light/update_ok.html/meta.json

@@ -4,7 +4,7 @@
 	"revisions": {
 		"1": {
 			"tags": null,
-			"name": "updateOk.html",
+			"name": "update_ok.html",
 			"comment": "Create Templates/default-light/updateOk.html",
 			"author": "",
 			"time": 1592996644,

wiki/sys/theme/default-light/view/404.html/1.html

@@ -0,0 +1,6 @@
+<article class="page page404">
+	<h1 class="page__title">{{ . }}</h1>
+	<p class="msg_hypha-does-not-exist msg">
+	The hypha you are trying to access does not exist yet. Why not <a href="?action=edit">create</a> it?
+	</p>
+</article>

wiki/sys/theme/default-light/view/sidebar.html/1.html

@@ -1,7 +1,7 @@
 <div class="hypha-actions">
 	<ul>
 		<li><a href="?action=edit">Edit</a></li>
-		<li><a href="?action=getBinary">Download</a></li>
+		<li><a href="?action=binary">Download</a></li>
 		<li><a href="?action=zen">Zen mode</a></li>
 		<li><a href="?action=raw">View raw</a></li>
 	</ul>

wiki/sys/theme/meta.json

@@ -0,0 +1,45 @@
+{
+	"views": 0,
+	"deleted": false,
+	"revisions": {
+		"1": {
+			"tags": [
+				""
+			],
+			"name": "Templates",
+			"comment": "Update Templates",
+			"author": "",
+			"time": 1593194769,
+			"text_mime": "text/markdown",
+			"binary_mime": "",
+			"text_name": "1.markdown",
+			"binary_name": ""
+		},
+		"2": {
+			"tags": [
+				""
+			],
+			"name": "Theme",
+			"comment": "Update Sys/Theme",
+			"author": "",
+			"time": 1593802668,
+			"text_mime": "text/markdown",
+			"binary_mime": "",
+			"text_name": "2.markdown",
+			"binary_name": ""
+		},
+		"3": {
+			"tags": [
+				""
+			],
+			"name": "Theme",
+			"comment": "Update Sys/Theme",
+			"author": "",
+			"time": 1593802769,
+			"text_mime": "text/markdown",
+			"binary_mime": "",
+			"text_name": "3.markdown",
+			"binary_name": ""
+		}
+	}
+}