mirror of
https://github.com/osmarks/mycorrhiza.git
synced 2024-12-12 05:20:26 +00:00
112 lines
3.1 KiB
Go
112 lines
3.1 KiB
Go
package main
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import (
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"encoding/json"
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"fmt"
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"io/ioutil"
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"log"
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"net/http"
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"os"
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"path/filepath"
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"strconv"
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"strings"
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)
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// `Hypha` represents a hypha. It is the thing MycorrhizaWiki generally serves.
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// Each hypha has 1 or more revisions.
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type Hypha struct {
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FullName string `json:"-"`
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Path string `json:"-"`
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ViewCount int `json:"views"`
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Deleted bool `json:"deleted"`
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Revisions map[string]*Revision `json:"revisions"`
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ChildrenNames []string `json:"-"`
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parentName string
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}
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// AsHtml returns HTML representation of the hypha.
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// No layout or navigation are present here. Just the hypha.
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func (h *Hypha) AsHtml(id string, w http.ResponseWriter) (string, error) {
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if "0" == id {
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id = h.NewestRevision()
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}
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if rev, ok := h.Revisions[id]; ok {
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return rev.AsHtml(w)
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}
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return "", fmt.Errorf("Hypha %v has no such revision: %v", h.FullName, id)
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}
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// GetNewestRevision returns the most recent Revision.
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func (h *Hypha) GetNewestRevision() Revision {
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return *h.Revisions[h.NewestRevision()]
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}
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// NewestRevision returns the most recent revision's id as a string.
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func (h *Hypha) NewestRevision() string {
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return strconv.Itoa(h.NewestRevisionInt())
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}
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// NewestRevision returns the most recent revision's id as an integer.
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func (h *Hypha) NewestRevisionInt() (ret int) {
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for k, _ := range h.Revisions {
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id, _ := strconv.Atoi(k)
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if id > ret {
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ret = id
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}
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}
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return ret
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}
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// MetaJsonPath returns rooted path to the hypha's `meta.json` file.
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// It is not promised that the file exists.
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func (h *Hypha) MetaJsonPath() string {
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return filepath.Join(h.Path, "meta.json")
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}
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// CreateDir creates directory where the hypha must reside.
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// It is meant to be used with new hyphae.
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func (h *Hypha) CreateDir() error {
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return os.MkdirAll(h.Path, os.ModePerm)
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}
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// SaveJson dumps the hypha's metadata to `meta.json` file.
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func (h *Hypha) SaveJson() {
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data, err := json.MarshalIndent(h, "", "\t")
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if err != nil {
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log.Println("Failed to create JSON of hypha.", err)
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return
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}
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err = ioutil.WriteFile(h.MetaJsonPath(), data, 0644)
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if err != nil {
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log.Println("Failed to save JSON of hypha.", err)
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return
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}
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log.Println("Saved JSON data of", h.FullName)
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}
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// ActionEdit is called with `?acton=edit`.
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// It represents the hypha editor.
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func ActionEdit(hyphaName string, w http.ResponseWriter) {
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w.Header().Set("Content-Type", "text/html; charset=utf-8")
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var initContents, initTextMime, initTags string
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if h, ok := hyphae[hyphaName]; ok {
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newestRev := h.GetNewestRevision()
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contents, err := ioutil.ReadFile(newestRev.TextPath)
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if err != nil {
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log.Println("Could not read", newestRev.TextPath)
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w.WriteHeader(http.StatusInternalServerError)
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w.Write([]byte(GenericErrorMsg))
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return
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}
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initContents = string(contents)
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initTextMime = newestRev.TextMime
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initTags = strings.Join(newestRev.Tags, ",")
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} else {
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initContents = "Describe " + hyphaName + "here."
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initTextMime = "text/markdown"
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}
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w.WriteHeader(http.StatusOK)
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w.Write([]byte(EditHyphaPage(hyphaName, initTextMime, initContents, initTags)))
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}
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