landed community join and unjoin functionality

2025-10-22 16:27:01 -06:00
parent 6d3403cd53
commit 11537d5d7f
7 changed files with 249 additions and 4 deletions
@@ -10,6 +10,8 @@
 package main

 import (
+	"errors"
+	"fmt"
 	"net/http"
 	"strings"

@@ -62,6 +64,7 @@ func ShowCommunity(ctxt ui.AmContext) (string, any, error) {
 	}

 	ctxt.VarMap().Set("commName", comm.Name)
+	ctxt.VarMap().Set("commAlias", comm.Alias)
 	if ci.PhotoURL != nil && *ci.PhotoURL != "" {
 		ctxt.VarMap().Set("logoURL", *ci.PhotoURL)
 	} else {
@@ -132,3 +135,166 @@ func ShowCommunity(ctxt ui.AmContext) (string, any, error) {
 	ctxt.VarMap().Set("amsterdam_pageTitle", "Community Profile: "+comm.Name)
 	return "framed_template", "comprofile.jet", nil
 }
+
+/* JoinCommunity joins a public community, or starts the process of joining a private one.
+ * Parameters:
+ *     ctxt - The AmContext for the request.
+ * Returns:
+ *     Command string dictating what to be rendered.
+ *     Data as a parameter for the command string.
+ *     Standard Go error status.
+ */
+func JoinCommunity(ctxt ui.AmContext) (string, any, error) {
+	me := ctxt.CurrentUser()
+	err := ctxt.SetCommunityContext(ctxt.URLParam("cid"))
+	ctxt.SetLeftMenu("community")
+	if err != nil {
+		ctxt.SetRC(http.StatusNotFound)
+		return ui.ErrorPage(ctxt, err)
+	}
+	comm := ctxt.CurrentCommunity()
+	mbr, _, _, err := comm.Membership(me)
+	if err != nil {
+		return ui.ErrorPage(ctxt, err)
+	}
+	if mbr {
+		// already member, this is a no-op
+		return "redirect", fmt.Sprintf("/comm/%s/profile", comm.Alias), nil
+	}
+	if comm.TestPermission("Community.Join", me.BaseLevel) {
+		if comm.JoinKey != nil && *comm.JoinKey != "" {
+			dlg, err := ui.AmLoadDialog("join")
+			if err != nil {
+				return ui.ErrorPage(ctxt, err)
+			}
+			dlg.SetCommunity(comm)
+			dlg.Field("cc").Value = comm.Alias
+			return dlg.Render(ctxt)
+		}
+		// if get here, this is a public community, and we can join
+		err = comm.SetMembership(me, database.AmDefaultRole("Community.NewUser").Level(), false, me.Uid, ctxt.RemoteIP())
+		if err != nil {
+			return ui.ErrorPage(ctxt, err)
+		}
+	} else {
+		return ui.ErrorPage(ctxt, errors.New("you are not permitted to join this community"))
+	}
+	return "redirect", fmt.Sprintf("/comm/%s/profile", comm.Alias), nil
+}
+
+/* JoinCommunityWithKey joins a private community with a properly specified join key.
+ * Parameters:
+ *     ctxt - The AmContext for the request.
+ * Returns:
+ *     Command string dictating what to be rendered.
+ *     Data as a parameter for the command string.
+ *     Standard Go error status.
+ */
+func JoinCommunityWithKey(ctxt ui.AmContext) (string, any, error) {
+	me := ctxt.CurrentUser()
+	err := ctxt.SetCommunityContext(ctxt.FormField("cc"))
+	if err != nil {
+		ctxt.SetRC(http.StatusNotFound)
+		return ui.ErrorPage(ctxt, err)
+	}
+	comm := ctxt.CurrentCommunity()
+	ctxt.SetLeftMenu("community")
+	mbr, _, _, err := comm.Membership(me)
+	if err != nil {
+		return ui.ErrorPage(ctxt, err)
+	}
+	if mbr {
+		// already member, this is a no-op
+		return "redirect", fmt.Sprintf("/comm/%s/profile", comm.Alias), nil
+	}
+	if comm.TestPermission("Community.Join", me.BaseLevel) {
+		dlg, err := ui.AmLoadDialog("join")
+		if err != nil {
+			return ui.ErrorPage(ctxt, err)
+		}
+		dlg.SetCommunity(comm)
+		dlg.LoadFromForm(ctxt)
+		action := dlg.WhichButton(ctxt)
+		if action == "cancel" {
+			return "redirect", fmt.Sprintf("/comm/%s/profile", comm.Alias), nil
+		}
+		if action == "join_now" {
+			key := dlg.Field("key").Value
+			dlg.Field("key").Value = "" // clear it in case we redisplay the form
+			if key == "" {
+				return dlg.RenderError(ctxt, "No join key specified.  Please try again.")
+			}
+			if comm.JoinKey != nil && key != *comm.JoinKey {
+				return dlg.RenderError(ctxt, "The join key does not match the community.  Please try again.")
+			}
+			err = comm.SetMembership(me, database.AmDefaultRole("Community.NewUser").Level(), false, me.Uid, ctxt.RemoteIP())
+			if err != nil {
+				return dlg.RenderError(ctxt, fmt.Sprintf("Error joining: %v", err))
+			}
+			return "redirect", fmt.Sprintf("/comm/%s/profile", comm.Alias), nil
+		}
+		return dlg.RenderError(ctxt, "Unknown button pressed on join form.")
+	}
+	return "redirect", fmt.Sprintf("/comm/%s/profile", comm.Alias), nil
+}
+
+func UnjoinCommunity(ctxt ui.AmContext) (string, any, error) {
+	me := ctxt.CurrentUser()
+	err := ctxt.SetCommunityContext(ctxt.URLParam("cid"))
+	if err != nil {
+		ctxt.SetRC(http.StatusNotFound)
+		return ui.ErrorPage(ctxt, err)
+	}
+	comm := ctxt.CurrentCommunity()
+	ctxt.SetLeftMenu("community")
+	mbr, lock, _, err := comm.Membership(me)
+	if err != nil {
+		return ui.ErrorPage(ctxt, err)
+	}
+	if !mbr {
+		// not a member, just redirect to profile
+		return "redirect", fmt.Sprintf("/comm/%s/profile", comm.Alias), nil
+	}
+	if lock {
+		ctxt.SetRC(http.StatusForbidden)
+		return ui.ErrorPage(ctxt, errors.New("you are not permitted to unjoin this community"))
+	}
+	ctxt.VarMap().Set("comm", comm)
+	ctxt.VarMap().Set("amsterdam_pageTitle", "Unjoin Community")
+	return "framed_template", "unjoin.jet", nil
+}
+
+func UnjoinCommunityConfirm(ctxt ui.AmContext) (string, any, error) {
+	me := ctxt.CurrentUser()
+	err := ctxt.SetCommunityContext(ctxt.URLParam("cid"))
+	if err != nil {
+		ctxt.SetRC(http.StatusNotFound)
+		return ui.ErrorPage(ctxt, err)
+	}
+	comm := ctxt.CurrentCommunity()
+	ctxt.SetLeftMenu("community")
+	mbr, lock, _, err := comm.Membership(me)
+	if err != nil {
+		return ui.ErrorPage(ctxt, err)
+	}
+	if !mbr {
+		// not a member, just redirect to profile
+		return "redirect", fmt.Sprintf("/comm/%s/profile", comm.Alias), nil
+	}
+	if lock {
+		ctxt.SetRC(http.StatusForbidden)
+		return ui.ErrorPage(ctxt, errors.New("you are not permitted to unjoin this community"))
+	}
+	if ctxt.FormFieldIsSet("cancel") {
+		return "redirect", fmt.Sprintf("/comm/%s/profile", comm.Alias), nil
+	}
+	if ctxt.FormFieldIsSet("unjoin") {
+		err = comm.SetMembership(me, 0, false, me.Uid, ctxt.RemoteIP())
+		if err != nil {
+			return ui.ErrorPage(ctxt, err)
+		}
+		ctxt.ClearCommunityContext()
+		return "redirect", fmt.Sprintf("/comm/%s/profile", comm.Alias), nil
+	}
+	return ui.ErrorPage(ctxt, errors.New("unknown button pressed to confirm unjoin"))
+}