package main
import (
"fmt"
"io/ioutil"
"log"
"net/http"
"os"
"path/filepath"
"github.com/bouncepaw/mycorrhiza/history"
"github.com/bouncepaw/mycorrhiza/templates"
"github.com/bouncepaw/mycorrhiza/util"
)
func init() {
http.HandleFunc("/upload-binary/", handlerUploadBinary)
http.HandleFunc("/upload-text/", handlerUploadText)
http.HandleFunc("/edit/", handlerEdit)
http.HandleFunc("/delete-ask/", handlerDeleteAsk)
http.HandleFunc("/delete-confirm/", handlerDeleteConfirm)
http.HandleFunc("/rename-ask/", handlerRenameAsk)
http.HandleFunc("/rename-confirm/", handlerRenameConfirm)
}
func handlerRenameAsk(w http.ResponseWriter, rq *http.Request) {
log.Println(rq.URL)
var (
hyphaName = HyphaNameFromRq(rq, "rename-ask")
_, isOld = HyphaStorage[hyphaName]
)
util.HTTP200Page(w, base("Rename "+hyphaName+"?", templates.RenameAskHTML(hyphaName, isOld)))
}
func handlerRenameConfirm(w http.ResponseWriter, rq *http.Request) {
log.Println(rq.URL)
var (
hyphaName = HyphaNameFromRq(rq, "rename-confirm")
hyphaData, isOld = HyphaStorage[hyphaName]
newName = CanonicalName(rq.PostFormValue("new-name"))
_, newNameIsUsed = HyphaStorage[newName]
recursive bool
)
if rq.PostFormValue("recursive") == "true" {
recursive = true
}
switch {
case newNameIsUsed:
HttpErr(w, http.StatusBadRequest, hyphaName, "Error: hypha exists",
fmt.Sprintf("Hypha named %s already exists.", hyphaName, hyphaName))
case newName == "":
HttpErr(w, http.StatusBadRequest, hyphaName, "Error: no name",
"No new name is given.")
case !isOld:
HttpErr(w, http.StatusBadRequest, hyphaName, "Error: no such hypha",
"Cannot rename a hypha that does not exist yet.")
case !HyphaPattern.MatchString(newName):
HttpErr(w, http.StatusBadRequest, hyphaName, "Error: invalid name",
"Invalid new name. Names cannot contain characters ^?!:#@><*|\"\\'&%
")
default:
if hop := hyphaData.RenameHypha(hyphaName, newName, recursive); len(hop.Errs) == 0 {
http.Redirect(w, rq, "/page/"+newName, http.StatusSeeOther)
} else {
HttpErr(w, http.StatusInternalServerError, hyphaName,
"Error: could not rename hypha",
fmt.Sprintf("Could not rename this hypha due to an internal error. Server errors: %v
", hop.Errs))
}
}
}
// handlerDeleteAsk shows a delete dialog.
func handlerDeleteAsk(w http.ResponseWriter, rq *http.Request) {
log.Println(rq.URL)
var (
hyphaName = HyphaNameFromRq(rq, "delete-ask")
_, isOld = HyphaStorage[hyphaName]
)
util.HTTP200Page(w, base("Delete "+hyphaName+"?", templates.DeleteAskHTML(hyphaName, isOld)))
}
// handlerDeleteConfirm deletes a hypha for sure
func handlerDeleteConfirm(w http.ResponseWriter, rq *http.Request) {
log.Println(rq.URL)
var (
hyphaName = HyphaNameFromRq(rq, "delete-confirm")
hyphaData, isOld = HyphaStorage[hyphaName]
)
if isOld {
// If deleted successfully
if hop := hyphaData.DeleteHypha(hyphaName); len(hop.Errs) == 0 {
http.Redirect(w, rq, "/page/"+hyphaName, http.StatusSeeOther)
} else {
HttpErr(w, http.StatusInternalServerError, hyphaName,
"Error: could not delete hypha",
fmt.Sprintf("Could not delete this hypha due to an internal error. Server errors: %v
", hop.Errs))
}
} else {
// The precondition is to have the hypha in the first place.
HttpErr(w, http.StatusPreconditionFailed, hyphaName,
"Error: no such hypha",
"Could not delete this hypha because it does not exist.")
}
}
// handlerEdit shows the edit form. It doesn't edit anything actually.
func handlerEdit(w http.ResponseWriter, rq *http.Request) {
log.Println(rq.URL)
var (
hyphaName = HyphaNameFromRq(rq, "edit")
hyphaData, isOld = HyphaStorage[hyphaName]
warning string
textAreaFill string
err error
)
if isOld {
textAreaFill, err = FetchTextPart(hyphaData)
if err != nil {
log.Println(err)
HttpErr(w, http.StatusInternalServerError, hyphaName, "Error",
"Could not fetch text data")
return
}
} else {
warning = `
You are creating a new hypha.
` } util.HTTP200Page(w, base("Edit"+hyphaName, templates.EditHTML(hyphaName, textAreaFill, warning))) } // handlerUploadText uploads a new text part for the hypha. func handlerUploadText(w http.ResponseWriter, rq *http.Request) { log.Println(rq.URL) var ( hyphaName = HyphaNameFromRq(rq, "upload-text") hyphaData, isOld = HyphaStorage[hyphaName] textData = rq.PostFormValue("text") textDataBytes = []byte(textData) fullPath = filepath.Join(WikiDir, hyphaName+"&.gmi") ) if textData == "" { HttpErr(w, http.StatusBadRequest, hyphaName, "Error", "No text data passed") return } // For some reason, only 0777 works. Why? if err := os.MkdirAll(filepath.Dir(fullPath), 0777); err != nil { log.Println(err) } if err := ioutil.WriteFile(fullPath, textDataBytes, 0644); err != nil { log.Println(err) HttpErr(w, http.StatusInternalServerError, hyphaName, "Error", fmt.Sprintf("Failed to write %d bytes to %s", len(textDataBytes), fullPath)) return } if !isOld { hd := HyphaData{ textType: TextGemini, textPath: fullPath, } HyphaStorage[hyphaName] = &hd hyphaData = &hd } else { hyphaData.textType = TextGemini hyphaData.textPath = fullPath } history.Operation(history.TypeEditText). WithFiles(fullPath). WithMsg(fmt.Sprintf("Edit ‘%s’", hyphaName)). WithSignature("anon"). Apply() http.Redirect(w, rq, "/page/"+hyphaName, http.StatusSeeOther) } // handlerUploadBinary uploads a new binary part for the hypha. func handlerUploadBinary(w http.ResponseWriter, rq *http.Request) { log.Println(rq.URL) hyphaName := HyphaNameFromRq(rq, "upload-binary") rq.ParseMultipartForm(10 << 20) // Read file file, handler, err := rq.FormFile("binary") if file != nil { defer file.Close() } // If file is not passed: if err != nil { HttpErr(w, http.StatusBadRequest, hyphaName, "Error", "No binary data passed") return } // If file is passed: var ( hyphaData, isOld = HyphaStorage[hyphaName] mimeType = MimeToBinaryType(handler.Header.Get("Content-Type")) ext = mimeType.Extension() fullPath = filepath.Join(WikiDir, hyphaName+"&"+ext) ) data, err := ioutil.ReadAll(file) if err != nil { HttpErr(w, http.StatusInternalServerError, hyphaName, "Error", "Could not read passed data") return } if err := os.MkdirAll(filepath.Dir(fullPath), 0777); err != nil { log.Println(err) } if !isOld { hd := HyphaData{ binaryPath: fullPath, binaryType: mimeType, } HyphaStorage[hyphaName] = &hd hyphaData = &hd } else { if hyphaData.binaryPath != fullPath { if err := history.Rename(hyphaData.binaryPath, fullPath); err != nil { log.Println(err) } else { log.Println("Moved", hyphaData.binaryPath, "to", fullPath) } } hyphaData.binaryPath = fullPath hyphaData.binaryType = mimeType } if err = ioutil.WriteFile(fullPath, data, 0644); err != nil { HttpErr(w, http.StatusInternalServerError, hyphaName, "Error", "Could not save passed data") return } log.Println("Written", len(data), "of binary data for", hyphaName, "to path", fullPath) history.Operation(history.TypeEditText). WithFiles(fullPath, hyphaData.binaryPath). WithMsg(fmt.Sprintf("Upload binary part for ‘%s’ with type ‘%s’", hyphaName, mimeType.Mime())). WithSignature("anon"). Apply() http.Redirect(w, rq, "/page/"+hyphaName, http.StatusSeeOther) }