github.com/gnolang/gno@v0.0.0-20240520182011-228e9d0192ce/examples/gno.land/r/demo/groups/public.gno (about)

     1  package groups
     2  
     3  import (
     4  	"std"
     5  
     6  	"gno.land/r/demo/users"
     7  )
     8  
     9  //----------------------------------------
    10  // Public facing functions
    11  
    12  func GetGroupIDFromName(name string) (GroupID, bool) {
    13  	groupI, exists := gGroupsByName.Get(name)
    14  	if !exists {
    15  		return 0, false
    16  	}
    17  	return groupI.(*Group).id, true
    18  }
    19  
    20  func CreateGroup(name string) GroupID {
    21  	std.AssertOriginCall()
    22  	caller := std.GetOrigCaller()
    23  	usernameOf(caller)
    24  	url := "/r/demo/groups:" + name
    25  	group := newGroup(url, name, caller)
    26  	gidkey := groupIDKey(group.id)
    27  	gGroups.Set(gidkey, group)
    28  	gGroupsByName.Set(name, group)
    29  	return group.id
    30  }
    31  
    32  func AddMember(gid GroupID, address string, weight int, metadata string) MemberID {
    33  	std.AssertOriginCall()
    34  	caller := std.GetOrigCaller()
    35  	usernameOf(caller)
    36  	group := getGroup(gid)
    37  	if !group.HasPermission(caller, EditPermission) {
    38  		panic("unauthorized to edit group")
    39  	}
    40  	user := users.GetUserByAddress(std.Address(address))
    41  	if user == nil {
    42  		panic("unknown address " + address)
    43  	}
    44  	mid := group.lastMemberID
    45  	member := group.newMember(mid, std.Address(address), weight, metadata)
    46  	midkey := memberIDKey(mid)
    47  	group.members.Set(midkey, member)
    48  	mid++
    49  	group.lastMemberID = mid
    50  	return member.id
    51  }
    52  
    53  func DeleteGroup(gid GroupID) {
    54  	std.AssertOriginCall()
    55  	caller := std.GetOrigCaller()
    56  	group := getGroup(gid)
    57  	if !group.HasPermission(caller, DeletePermission) {
    58  		panic("unauthorized to delete group")
    59  	}
    60  	group.deleteGroup()
    61  }
    62  
    63  func DeleteMember(gid GroupID, mid MemberID) {
    64  	std.AssertOriginCall()
    65  	caller := std.GetOrigCaller()
    66  	group := getGroup(gid)
    67  	if !group.HasPermission(caller, DeletePermission) {
    68  		panic("unauthorized to delete member")
    69  	}
    70  	group.deleteMember(mid)
    71  }