mirror of
https://github.com/osmarks/mycorrhiza.git
synced 2024-12-12 05:20:26 +00:00
316 lines
9.8 KiB
Go
316 lines
9.8 KiB
Go
package main
|
||
|
||
import (
|
||
"errors"
|
||
"fmt"
|
||
"io/ioutil"
|
||
"log"
|
||
"mime/multipart"
|
||
"os"
|
||
"path/filepath"
|
||
"regexp"
|
||
|
||
"github.com/bouncepaw/mycorrhiza/history"
|
||
"github.com/bouncepaw/mycorrhiza/hyphae"
|
||
"github.com/bouncepaw/mycorrhiza/markup"
|
||
"github.com/bouncepaw/mycorrhiza/user"
|
||
"github.com/bouncepaw/mycorrhiza/util"
|
||
)
|
||
|
||
func init() {
|
||
markup.HyphaExists = func(hyphaName string) bool {
|
||
_, hyphaExists := HyphaStorage[hyphaName]
|
||
return hyphaExists
|
||
}
|
||
markup.HyphaAccess = func(hyphaName string) (rawText, binaryBlock string, err error) {
|
||
if hyphaData, ok := HyphaStorage[hyphaName]; ok {
|
||
rawText, err = FetchTextPart(hyphaData)
|
||
if hyphaData.binaryPath != "" {
|
||
binaryBlock = binaryHtmlBlock(hyphaName, hyphaData)
|
||
}
|
||
} else {
|
||
err = errors.New("Hypha " + hyphaName + " does not exist")
|
||
}
|
||
return
|
||
}
|
||
markup.HyphaIterate = IterateHyphaNamesWith
|
||
markup.HyphaImageForOG = func(hyphaName string) string {
|
||
if hd, isOld := GetHyphaData(hyphaName); isOld && hd.binaryPath != "" {
|
||
return util.URL + "/binary/" + hyphaName
|
||
}
|
||
return util.URL + "/favicon.ico"
|
||
}
|
||
}
|
||
|
||
// GetHyphaData finds a hypha addressed by `hyphaName` and returns its `hyphaData`. `hyphaData` is set to a zero value if this hypha does not exist. `isOld` is false if this hypha does not exist.
|
||
func GetHyphaData(hyphaName string) (hyphaData *HyphaData, isOld bool) {
|
||
hyphaData, isOld = HyphaStorage[hyphaName]
|
||
if hyphaData == nil {
|
||
hyphaData = &HyphaData{}
|
||
}
|
||
return
|
||
}
|
||
|
||
// HyphaData represents a hypha's meta information: binary and text parts rooted paths and content types.
|
||
type HyphaData struct {
|
||
textPath string
|
||
binaryPath string
|
||
}
|
||
|
||
// uploadHelp is a helper function for UploadText and UploadBinary
|
||
func uploadHelp(hop *history.HistoryOp, hyphaName, ext string, data []byte, u *user.User) *history.HistoryOp {
|
||
var (
|
||
hyphaData, isOld = GetHyphaData(hyphaName)
|
||
fullPath = filepath.Join(WikiDir, hyphaName+ext)
|
||
originalFullPath = &hyphaData.textPath
|
||
)
|
||
if hop.Type == history.TypeEditBinary {
|
||
originalFullPath = &hyphaData.binaryPath
|
||
}
|
||
|
||
if err := os.MkdirAll(filepath.Dir(fullPath), 0777); err != nil {
|
||
return hop.WithError(err)
|
||
}
|
||
|
||
if err := ioutil.WriteFile(fullPath, data, 0644); err != nil {
|
||
return hop.WithError(err)
|
||
}
|
||
|
||
if isOld && *originalFullPath != fullPath && *originalFullPath != "" {
|
||
if err := history.Rename(*originalFullPath, fullPath); err != nil {
|
||
return hop.WithError(err)
|
||
}
|
||
log.Println("Move", *originalFullPath, "to", fullPath)
|
||
}
|
||
// New hyphae must be added to the hypha storage
|
||
if !isOld {
|
||
HyphaStorage[hyphaName] = hyphaData
|
||
hyphae.IncrementCount()
|
||
}
|
||
*originalFullPath = fullPath
|
||
if isOld && hop.Type == history.TypeEditText && !history.FileChanged(fullPath) {
|
||
return hop.Abort()
|
||
}
|
||
return hop.WithFiles(fullPath).
|
||
WithUser(u).
|
||
Apply()
|
||
}
|
||
|
||
// UploadText loads a new text part from `textData` for hypha `hyphaName`.
|
||
func UploadText(hyphaName, textData string, u *user.User) *history.HistoryOp {
|
||
return uploadHelp(
|
||
history.
|
||
Operation(history.TypeEditText).
|
||
WithMsg(fmt.Sprintf("Edit ‘%s’", hyphaName)),
|
||
hyphaName, ".myco", []byte(textData), u)
|
||
}
|
||
|
||
// UploadBinary loads a new binary part from `file` for hypha `hyphaName` with `hd`. The contents have the specified `mime` type. It must be marked if the hypha `isOld`.
|
||
func UploadBinary(hyphaName, mime string, file multipart.File, u *user.User) *history.HistoryOp {
|
||
var (
|
||
hop = history.Operation(history.TypeEditBinary).WithMsg(fmt.Sprintf("Upload binary part for ‘%s’ with type ‘%s’", hyphaName, mime))
|
||
data, err = ioutil.ReadAll(file)
|
||
)
|
||
if err != nil {
|
||
return hop.WithError(err).Apply()
|
||
}
|
||
return uploadHelp(hop, hyphaName, MimeToExtension(mime), data, u)
|
||
}
|
||
|
||
// DeleteHypha deletes hypha and makes a history record about that.
|
||
func (hd *HyphaData) DeleteHypha(hyphaName string, u *user.User) *history.HistoryOp {
|
||
hop := history.Operation(history.TypeDeleteHypha).
|
||
WithFilesRemoved(hd.textPath, hd.binaryPath).
|
||
WithMsg(fmt.Sprintf("Delete ‘%s’", hyphaName)).
|
||
WithUser(u).
|
||
Apply()
|
||
if len(hop.Errs) == 0 {
|
||
delete(HyphaStorage, hyphaName)
|
||
hyphae.DecrementCount()
|
||
}
|
||
return hop
|
||
}
|
||
|
||
// UnattachHypha unattaches hypha and makes a history record about that.
|
||
func (hd *HyphaData) UnattachHypha(hyphaName string, u *user.User) *history.HistoryOp {
|
||
hop := history.Operation(history.TypeUnattachHypha).
|
||
WithFilesRemoved(hd.binaryPath).
|
||
WithMsg(fmt.Sprintf("Unattach ‘%s’", hyphaName)).
|
||
WithUser(u).
|
||
Apply()
|
||
if len(hop.Errs) == 0 {
|
||
hd, ok := HyphaStorage[hyphaName]
|
||
if ok {
|
||
if hd.binaryPath != "" {
|
||
hd.binaryPath = ""
|
||
}
|
||
// If nothing is left of the hypha
|
||
if hd.textPath == "" {
|
||
delete(HyphaStorage, hyphaName)
|
||
hyphae.DecrementCount()
|
||
}
|
||
}
|
||
}
|
||
return hop
|
||
}
|
||
|
||
func findHyphaeToRename(hyphaName string, recursive bool) []string {
|
||
hyphae := []string{hyphaName}
|
||
if recursive {
|
||
hyphae = append(hyphae, util.FindSubhyphae(hyphaName, IterateHyphaNamesWith)...)
|
||
}
|
||
return hyphae
|
||
}
|
||
|
||
func renamingPairs(hyphaNames []string, replaceName func(string) string) (map[string]string, error) {
|
||
renameMap := make(map[string]string)
|
||
for _, hn := range hyphaNames {
|
||
if hd, ok := HyphaStorage[hn]; ok {
|
||
if _, nameUsed := HyphaStorage[replaceName(hn)]; nameUsed {
|
||
return nil, errors.New("Hypha " + replaceName(hn) + " already exists")
|
||
}
|
||
if hd.textPath != "" {
|
||
renameMap[hd.textPath] = replaceName(hd.textPath)
|
||
}
|
||
if hd.binaryPath != "" {
|
||
renameMap[hd.binaryPath] = replaceName(hd.binaryPath)
|
||
}
|
||
}
|
||
}
|
||
return renameMap, nil
|
||
}
|
||
|
||
// word Data is plural here
|
||
func relocateHyphaData(hyphaNames []string, replaceName func(string) string) {
|
||
for _, hyphaName := range hyphaNames {
|
||
if hd, ok := HyphaStorage[hyphaName]; ok {
|
||
hd.textPath = replaceName(hd.textPath)
|
||
hd.binaryPath = replaceName(hd.binaryPath)
|
||
HyphaStorage[replaceName(hyphaName)] = hd
|
||
delete(HyphaStorage, hyphaName)
|
||
}
|
||
}
|
||
}
|
||
|
||
// RenameHypha renames hypha from old name `hyphaName` to `newName` and makes a history record about that. If `recursive` is `true`, its subhyphae will be renamed the same way.
|
||
func RenameHypha(hyphaName, newName string, recursive bool, u *user.User) *history.HistoryOp {
|
||
var (
|
||
re = regexp.MustCompile(`(?i)` + hyphaName)
|
||
replaceName = func(str string) string {
|
||
return re.ReplaceAllString(CanonicalName(str), newName)
|
||
}
|
||
hyphaNames = findHyphaeToRename(hyphaName, recursive)
|
||
renameMap, err = renamingPairs(hyphaNames, replaceName)
|
||
renameMsg = "Rename ‘%s’ to ‘%s’"
|
||
hop = history.Operation(history.TypeRenameHypha)
|
||
)
|
||
if err != nil {
|
||
hop.Errs = append(hop.Errs, err)
|
||
return hop
|
||
}
|
||
if recursive {
|
||
renameMsg += " recursively"
|
||
}
|
||
hop.WithFilesRenamed(renameMap).
|
||
WithMsg(fmt.Sprintf(renameMsg, hyphaName, newName)).
|
||
WithUser(u).
|
||
Apply()
|
||
if len(hop.Errs) == 0 {
|
||
relocateHyphaData(hyphaNames, replaceName)
|
||
}
|
||
return hop
|
||
}
|
||
|
||
// binaryHtmlBlock creates an html block for binary part of the hypha.
|
||
func binaryHtmlBlock(hyphaName string, hd *HyphaData) string {
|
||
switch filepath.Ext(hd.binaryPath) {
|
||
case ".jpg", ".gif", ".png", ".webp", ".svg", ".ico":
|
||
return fmt.Sprintf(`
|
||
<div class="binary-container binary-container_with-img">
|
||
<a href="/binary/%[1]s"><img src="/binary/%[1]s"/></a>
|
||
</div>`, hyphaName)
|
||
case ".ogg", ".webm", ".mp4":
|
||
return fmt.Sprintf(`
|
||
<div class="binary-container binary-container_with-video">
|
||
<video>
|
||
<source src="/binary/%[1]s"/>
|
||
<p>Your browser does not support video. See video's <a href="/binary/%[1]s">direct url</a></p>
|
||
</video>
|
||
`, hyphaName)
|
||
case ".mp3":
|
||
return fmt.Sprintf(`
|
||
<div class="binary-container binary-container_with-audio">
|
||
<audio>
|
||
<source src="/binary/%[1]s"/>
|
||
<p>Your browser does not support audio. See audio's <a href="/binary/%[1]s">direct url</a></p>
|
||
</audio>
|
||
`, hyphaName)
|
||
default:
|
||
return fmt.Sprintf(`
|
||
<div class="binary-container binary-container_with-nothing">
|
||
<p>This hypha's media cannot be rendered. <a href="/binary/%s">Download it</a></p>
|
||
</div>
|
||
`, hyphaName)
|
||
}
|
||
}
|
||
|
||
// Index finds all hypha files in the full `path` and saves them to HyphaStorage. This function is recursive.
|
||
func Index(path string) {
|
||
nodes, err := ioutil.ReadDir(path)
|
||
if err != nil {
|
||
log.Fatal(err)
|
||
}
|
||
|
||
for _, node := range nodes {
|
||
// If this hypha looks like it can be a hypha path, go deeper. Do not touch the .git and static folders for they have an admnistrative importance!
|
||
if node.IsDir() && isCanonicalName(node.Name()) && node.Name() != ".git" && node.Name() != "static" {
|
||
Index(filepath.Join(path, node.Name()))
|
||
continue
|
||
}
|
||
|
||
var (
|
||
hyphaPartPath = filepath.Join(path, node.Name())
|
||
hyphaName, isText, skip = DataFromFilename(hyphaPartPath)
|
||
hyphaData *HyphaData
|
||
)
|
||
if !skip {
|
||
// Reuse the entry for existing hyphae, create a new one for those that do not exist yet.
|
||
if hd, ok := HyphaStorage[hyphaName]; ok {
|
||
hyphaData = hd
|
||
} else {
|
||
hyphaData = &HyphaData{}
|
||
HyphaStorage[hyphaName] = hyphaData
|
||
hyphae.IncrementCount()
|
||
}
|
||
if isText {
|
||
hyphaData.textPath = hyphaPartPath
|
||
} else {
|
||
// Notify the user about binary part collisions. It's a design decision to just use any of them, it's the user's fault that they have screwed up the folder structure, but the engine should at least let them know, right?
|
||
if hyphaData.binaryPath != "" {
|
||
log.Println("There is a file collision for binary part of a hypha:", hyphaData.binaryPath, "and", hyphaPartPath, "-- going on with the latter")
|
||
}
|
||
hyphaData.binaryPath = hyphaPartPath
|
||
}
|
||
}
|
||
|
||
}
|
||
}
|
||
|
||
// FetchTextPart tries to read text file in the `d`. If there is no file, empty string is returned.
|
||
func FetchTextPart(d *HyphaData) (string, error) {
|
||
if d.textPath == "" {
|
||
return "", nil
|
||
}
|
||
_, err := os.Stat(d.textPath)
|
||
if os.IsNotExist(err) {
|
||
return "", nil
|
||
} else if err != nil {
|
||
return "", err
|
||
}
|
||
text, err := ioutil.ReadFile(d.textPath)
|
||
if err != nil {
|
||
return "", err
|
||
}
|
||
return string(text), nil
|
||
}
|