Final touches. Refactoring is done?

fs/data.go

@@ -0,0 +1,81 @@
+// This file contains methods for Hypha that calculate data about the hypha based on known information.
+package fs
+
+import (
+	"fmt"
+	"io/ioutil"
+	"log"
+	"path/filepath"
+	"strconv"
+	"strings"
+
+	"github.com/bouncepaw/mycorrhiza/cfg"
+)
+
+func (h *Hypha) MetaJsonPath() string {
+	return filepath.Join(h.Path(), "meta.json")
+}
+
+func (h *Hypha) Path() string {
+	return filepath.Join(cfg.WikiDir, h.FullName)
+}
+
+func (h *Hypha) TextPath() string {
+	return h.actual.TextPath
+}
+
+func (h *Hypha) parentName() string {
+	return filepath.Dir(h.FullName)
+}
+
+// hasBinaryData returns true if the revision has any binary data associated.
+// During initialisation, it is guaranteed that r.BinaryMime is set to "" if the revision has no binary data. (is it?)
+func (h *Hypha) hasBinaryData() bool {
+	return h.actual.BinaryMime != ""
+}
+
+func (h *Hypha) TagsJoined() string {
+	if h.Exists {
+		return strings.Join(h.actual.Tags, ", ")
+	}
+	return ""
+}
+
+func (h *Hypha) TextMime() string {
+	if h.Exists {
+		return h.actual.TextMime
+	}
+	return "text/markdown"
+}
+
+func (h *Hypha) mimeTypeForActionRaw() string {
+	// If text mime type is text/html, it is not good as it will be rendered.
+	if h.actual.TextMime == "text/html" {
+		return "text/plain"
+	}
+	return h.actual.TextMime
+}
+
+// NewestId finds the largest id among all revisions.
+func (h *Hypha) NewestId() string {
+	var largest int
+	for k, _ := range h.Revisions {
+		id, _ := strconv.Atoi(k)
+		if id > largest {
+			largest = id
+		}
+	}
+	return strconv.Itoa(largest)
+}
+
+func (h *Hypha) TextContent() string {
+	if h.Exists {
+		contents, err := ioutil.ReadFile(h.TextPath())
+		if err != nil {
+			log.Println("Could not read", h.FullName)
+			return "Error: could not hypha text content file. It is recommended to cancel editing. Please contact the wiki admin. If you are the admin, see the logs."
+		}
+		return string(contents)
+	}
+	return fmt.Sprintf(cfg.DescribeHyphaHerePattern, h.FullName)
+}

fs/hypha.go

@@ -3,7 +3,6 @@ package fs
 import (
 	"encoding/json"
 	"errors"
-	"fmt"
 	"io/ioutil"
 	"log"
 	"net/http"
@@ -33,44 +32,6 @@ func (h *Hypha) Invalidate(err error) *Hypha {
 	return h
 }
 
-func (h *Hypha) MetaJsonPath() string {
-	return filepath.Join(h.Path(), "meta.json")
-}
-
-func (h *Hypha) Path() string {
-	return filepath.Join(cfg.WikiDir, h.FullName)
-}
-
-func (h *Hypha) TextPath() string {
-	return h.actual.TextPath
-}
-
-func (h *Hypha) TagsJoined() string {
-	if h.Exists {
-		return strings.Join(h.actual.Tags, ", ")
-	}
-	return ""
-}
-
-func (h *Hypha) TextMime() string {
-	if h.Exists {
-		return h.actual.TextMime
-	}
-	return "text/markdown"
-}
-
-func (h *Hypha) TextContent() string {
-	if h.Exists {
-		contents, err := ioutil.ReadFile(h.TextPath())
-		if err != nil {
-			log.Println("Could not read", h.FullName)
-			return "Error: could not hypha text content file. It is recommended to cancel editing. Please contact the wiki admin. If you are the admin, see the logs."
-		}
-		return string(contents)
-	}
-	return fmt.Sprintf(cfg.DescribeHyphaHerePattern, h.FullName)
-}
-
 func (s *Storage) Open(name string) *Hypha {
 	h := &Hypha{
 		Exists:   true,
@@ -107,14 +68,6 @@ func (s *Storage) Open(name string) *Hypha {
 	return h
 }
 
-func (h *Hypha) parentName() string {
-	return filepath.Dir(h.FullName)
-}
-
-func (h *Hypha) metaJsonPath() string {
-	return filepath.Join(cfg.WikiDir, h.FullName, "meta.json")
-}
-
 // OnRevision tries to change to a revision specified by `id`.
 func (h *Hypha) OnRevision(id string) *Hypha {
 	if h.Invalid || !h.Exists {
@@ -133,18 +86,6 @@ func (h *Hypha) OnRevision(id string) *Hypha {
 	return h
 }
 
-// NewestId finds the largest id among all revisions.
-func (h *Hypha) NewestId() string {
-	var largest int
-	for k, _ := range h.Revisions {
-		id, _ := strconv.Atoi(k)
-		if id > largest {
-			largest = id
-		}
-	}
-	return strconv.Itoa(largest)
-}
-
 func (h *Hypha) PlainLog(s string) {
 	if h.Exists {
 		log.Println(h.FullName, h.actual.Id, s)
@@ -153,74 +94,74 @@ func (h *Hypha) PlainLog(s string) {
 	}
 }
 
-func (h *Hypha) mimeTypeForActionRaw() string {
+func (h *Hypha) LogSuccMaybe(succMsg string) *Hypha {
-	// If text mime type is text/html, it is not good as it will be rendered.
+	if h.Invalid {
-	if h.actual.TextMime == "text/html" {
+		h.PlainLog(h.Err.Error())
-		return "text/plain"
+	} else {
+		h.PlainLog(succMsg)
 	}
-	return h.actual.TextMime
+	return h
-}
-
-// hasBinaryData returns true if the revision has any binary data associated.
-// During initialisation, it is guaranteed that r.BinaryMime is set to "" if the revision has no binary data. (is it?)
-func (h *Hypha) hasBinaryData() bool {
-	return h.actual.BinaryMime != ""
 }
 
 // ActionRaw is used with `?action=raw`.
 // It writes text content of the revision without any parsing or rendering.
-func (h *Hypha) ActionRaw(w http.ResponseWriter) {
+func (h *Hypha) ActionRaw(w http.ResponseWriter) *Hypha {
+	if h.Invalid {
+		return h
+	}
 	fileContents, err := ioutil.ReadFile(h.actual.TextPath)
 	if err != nil {
-		log.Fatal(err)
+		return h.Invalidate(err)
-		return
 	}
 	w.Header().Set("Content-Type", h.mimeTypeForActionRaw())
 	w.WriteHeader(http.StatusOK)
 	w.Write(fileContents)
-	h.PlainLog("Serving raw text")
+	return h
 }
 
 // ActionBinary is used with `?action=binary`.
 // It writes contents of binary content file.
-func (h *Hypha) ActionBinary(w http.ResponseWriter) {
+func (h *Hypha) ActionBinary(w http.ResponseWriter) *Hypha {
+	if h.Invalid {
+		return h
+	}
 	fileContents, err := ioutil.ReadFile(h.actual.BinaryPath)
 	if err != nil {
-		log.Fatal(err)
+		return h.Invalidate(err)
-		return
 	}
 	w.Header().Set("Content-Type", h.actual.BinaryMime)
 	w.WriteHeader(http.StatusOK)
 	w.Write(fileContents)
-	h.PlainLog("Serving raw text")
+	return h
 }
 
 // ActionZen is used with `?action=zen`.
 // It renders the hypha but without any layout or styles. Pure. Zen.
-func (h *Hypha) ActionZen(w http.ResponseWriter) {
+func (h *Hypha) ActionZen(w http.ResponseWriter) *Hypha {
+	if h.Invalid {
+		return h
+	}
 	html, err := h.asHtml()
 	if err != nil {
-		log.Println(err)
 		w.WriteHeader(http.StatusInternalServerError)
-		return
+		return h.Invalidate(err)
 	}
 	w.Header().Set("Content-Type", "text/html;charset=utf-8")
 	w.WriteHeader(http.StatusOK)
 	w.Write([]byte(html))
-	h.PlainLog("Rendering zen")
+	return h
 }
 
 // ActionView is used with `?action=view` or no action at all.
 // It renders the page, the layout and everything else.
-func (h *Hypha) ActionView(w http.ResponseWriter, renderExists, renderNotExists func(string, string) string) {
+func (h *Hypha) ActionView(w http.ResponseWriter, renderExists, renderNotExists func(string, string) string) *Hypha {
 	var html string
 	var err error
 	if h.Exists {
 		html, err = h.asHtml()
 		if err != nil {
-			log.Println(err)
 			w.WriteHeader(http.StatusInternalServerError)
-			return
+			return h.Invalidate(err)
 		}
 	}
 	w.Header().Set("Content-Type", "text/html;charset=utf-8")
@@ -230,7 +171,7 @@ func (h *Hypha) ActionView(w http.ResponseWriter, renderExists, renderNotExists
 	} else {
 		w.Write([]byte(renderNotExists(h.FullName, "")))
 	}
-	h.PlainLog("Rendering hypha view")
+	return h
 }
 
 // CreateDirIfNeeded creates directory where the hypha must reside if needed.

handlers.go

@@ -2,13 +2,7 @@ package main
 
 import (
 	"log"
-	// "io/ioutil"
-	// "log"
 	"net/http"
-	// "path/filepath"
-	// "strconv"
-	// "strings"
-	// "time"
 
 	"github.com/bouncepaw/mycorrhiza/fs"
 	"github.com/bouncepaw/mycorrhiza/render"
@@ -18,40 +12,31 @@ import (
 // There are handlers below. See main() for their usage.
 
 // Boilerplate code present in many handlers. Good to have it.
-func HandlerBase(w http.ResponseWriter, rq *http.Request) (*fs.Hypha, bool) {
+func HandlerBase(w http.ResponseWriter, rq *http.Request) *fs.Hypha {
 	vars := mux.Vars(rq)
-	h := fs.Hs.Open(vars["hypha"]).OnRevision(RevInMap(vars))
+	return fs.Hs.Open(vars["hypha"]).OnRevision(RevInMap(vars))
-	if h.Invalid {
-		log.Println(h.Err)
-		return h, false
-	}
-	return h, true
 }
 
 func HandlerRaw(w http.ResponseWriter, rq *http.Request) {
 	log.Println("?action=raw")
-	if h, ok := HandlerBase(w, rq); ok {
+	HandlerBase(w, rq).ActionRaw(w).LogSuccMaybe("Serving raw text")
-		h.ActionRaw(w)
-	}
 }
 
 func HandlerBinary(w http.ResponseWriter, rq *http.Request) {
 	log.Println("?action=binary")
-	if h, ok := HandlerBase(w, rq); ok {
+	HandlerBase(w, rq).ActionBinary(w).LogSuccMaybe("Serving binary data")
-		h.ActionBinary(w)
-	}
 }
 
 func HandlerZen(w http.ResponseWriter, rq *http.Request) {
-	if h, ok := HandlerBase(w, rq); ok {
+	log.Println("?action=zen")
-		h.ActionZen(w)
+	HandlerBase(w, rq).ActionZen(w).LogSuccMaybe("Rendering zen")
-	}
 }
 
 func HandlerView(w http.ResponseWriter, rq *http.Request) {
-	if h, ok := HandlerBase(w, rq); ok {
+	log.Println("?action=view")
-		h.ActionView(w, render.HyphaPage, render.Hypha404)
+	HandlerBase(w, rq).
-	}
+		ActionView(w, render.HyphaPage, render.Hypha404).
+		LogSuccMaybe("Rendering hypha view")
 }
 
 func HandlerEdit(w http.ResponseWriter, rq *http.Request) {
@@ -72,14 +57,12 @@ func HandlerUpdate(w http.ResponseWriter, rq *http.Request) {
 		WriteTextFileFromHttpData(rq).
 		WriteBinaryFileFromHttpData(rq).
 		SaveJson().
-		Store()
+		Store().
-
+		LogSuccMaybe("Saved changes")
-	if h.Invalid {
-		log.Println(h.Err)
-		return
-	}
 
+	if !h.Invalid {
 		w.WriteHeader(http.StatusOK)
 		w.Header().Set("Content-Type", "text/html; charset=utf-8")
 		w.Write([]byte(render.HyphaUpdateOk(h)))
 	}
+}

w/m/Fruit/3.markdown

@@ -0,0 +1,4 @@
+According to real *scientists*, fruit is a type of fetus. Most of them are tasty and cool, though some of them are really sour and depressing. Be careful when choosing fruit. Best ones are:
+
+* [Apple](Apple)
+* [Pear](Pear)

w/m/Fruit/meta.json

@@ -1,22 +1,47 @@
 {
+	"views": 0,
+	"deleted": false,
 	"revisions": {
 		"1": {
+			"tags": [
+				"fetus",
+				"tasty"
+			],
 			"name": "Fruit",
-		"time":		1591635559, 
-		"author":	"bouncepaw", 
 			"comment": "create Fruit",
-		"tags":		["fetus", "tasty"], 
+			"author": "bouncepaw",
+			"time": 1591635559,
 			"text_mime": "text/markdown",
-		"text_name":	"1.md"
+			"binary_mime": "",
+			"text_name": "1.md",
+			"binary_name": ""
 		},
 		"2": {
+			"tags": [
+				"fetus",
+				"tasty"
+			],
 			"name": "Fruit",
-		"time":		1591636222,
-		"author":	"fungimaster", 
 			"comment": "update Fruit",
-		"tags":		["fetus", "tasty"], 
+			"author": "fungimaster",
+			"time": 1591636222,
 			"text_mime": "text/markdown",
-		"text_name":	"2.md"
+			"binary_mime": "",
-	}
+			"text_name": "2.md",
+			"binary_name": ""
+		},
+		"3": {
+			"tags": null,
+			"name": "Fruit",
+			"comment": "Update Fruit",
+			"author": "",
+			"time": 1593279957,
+			"text_mime": "text/markdown",
+			"binary_mime": "",
+			"text_name": "3.markdown",
+			"binary_name": ""
 		}
+	},
+	"Invalid": false,
+	"Err": null
 }