feat(ui): assign agent

frontend/src/components/git/AssignIssueAgentDialog.tsx

@@ -0,0 +1,287 @@
+"use client";
+
+import { useEffect, useState } from "react";
+
+import {
+  useListBoardsApiV1BoardsGet,
+  type listBoardsApiV1BoardsGetResponse,
+} from "@/api/generated/boards/boards";
+import {
+  useListAgentsApiV1AgentsGet,
+  type listAgentsApiV1AgentsGetResponse,
+} from "@/api/generated/agents/agents";
+import { ApiError } from "@/api/mutator";
+import {
+  Dialog,
+  DialogContent,
+  DialogDescription,
+  DialogFooter,
+  DialogHeader,
+  DialogTitle,
+} from "@/components/ui/dialog";
+import { Button } from "@/components/ui/button";
+import { Textarea } from "@/components/ui/textarea";
+import type { ForgejoIssue, AssignIssueAgentResponse } from "@/lib/api-forgejo";
+import { assignIssueToAgent } from "@/lib/api-forgejo";
+
+type AssignIssueAgentDialogProps = {
+  issue: ForgejoIssue | null;
+  repositoryName: string;
+  open: boolean;
+  onOpenChange: (open: boolean) => void;
+  onSuccess: (result: AssignIssueAgentResponse) => void;
+};
+
+export function AssignIssueAgentDialog({
+  issue,
+  repositoryName,
+  open,
+  onOpenChange,
+  onSuccess,
+}: AssignIssueAgentDialogProps) {
+  const [boardId, setBoardId] = useState("");
+  const [agentId, setAgentId] = useState("");
+  const [priority, setPriority] = useState("medium");
+  const [instructions, setInstructions] = useState("");
+  const [startImmediately, setStartImmediately] = useState(true);
+  const [isSubmitting, setIsSubmitting] = useState(false);
+  const [error, setError] = useState<string | null>(null);
+
+  const boardsQuery = useListBoardsApiV1BoardsGet<
+    listBoardsApiV1BoardsGetResponse,
+    ApiError
+  >(undefined, { query: { enabled: open, refetchOnMount: "always" } });
+
+  const agentsQuery = useListAgentsApiV1AgentsGet<
+    listAgentsApiV1AgentsGetResponse,
+    ApiError
+  >(
+    { board_id: boardId || undefined, limit: 200 },
+    { query: { enabled: open && !!boardId, refetchOnMount: "always" } },
+  );
+
+  const boards =
+    boardsQuery.data?.status === 200
+      ? (boardsQuery.data.data.items ?? [])
+      : [];
+  const agents =
+    agentsQuery.data?.status === 200
+      ? (agentsQuery.data.data.items ?? [])
+      : [];
+
+  useEffect(() => {
+    if (!open) {
+      setBoardId("");
+      setAgentId("");
+      setPriority("medium");
+      setInstructions("");
+      setStartImmediately(true);
+      setError(null);
+    }
+  }, [open]);
+
+  useEffect(() => {
+    if (boards.length > 0 && !boardId) {
+      setBoardId(boards[0].id);
+    }
+  }, [boards, boardId]);
+
+  useEffect(() => {
+    setAgentId("");
+  }, [boardId]);
+
+  if (!issue) return null;
+
+  const handleSubmit = async () => {
+    if (!boardId) return;
+    setIsSubmitting(true);
+    setError(null);
+    try {
+      const result = await assignIssueToAgent(issue.id, {
+        board_id: boardId,
+        assigned_agent_id: agentId || undefined,
+        priority,
+        start_immediately: startImmediately,
+        status: startImmediately && agentId ? "in_progress" : "inbox",
+        instructions: instructions.trim() || undefined,
+      });
+      onSuccess(result);
+      onOpenChange(false);
+    } catch (err) {
+      setError(err instanceof Error ? err.message : "Failed to assign agent");
+    } finally {
+      setIsSubmitting(false);
+    }
+  };
+
+  const toggleSwitch = (
+    value: boolean,
+    setter: (v: boolean) => void,
+    disabled: boolean,
+  ) => (
+    <button
+      type="button"
+      role="switch"
+      aria-checked={value}
+      onClick={() => !disabled && setter(!value)}
+      disabled={disabled}
+      className={`mt-0.5 inline-flex h-6 w-11 shrink-0 items-center rounded-full border transition ${
+        value ? "border-emerald-600 bg-emerald-600" : "border-[color:var(--border)] bg-[color:var(--surface-muted)]"
+      } ${disabled ? "cursor-not-allowed opacity-60" : "cursor-pointer"}`}
+    >
+      <span
+        className={`inline-block h-5 w-5 rounded-full bg-[color:var(--surface)] shadow-sm transition ${
+          value ? "translate-x-5" : "translate-x-0.5"
+        }`}
+      />
+    </button>
+  );
+
+  return (
+    <Dialog
+      open={open}
+      onOpenChange={(next) => {
+        if (!isSubmitting) onOpenChange(next);
+      }}
+    >
+      <DialogContent className="max-w-lg">
+        <DialogHeader>
+          <DialogTitle>Assign to agent</DialogTitle>
+          <DialogDescription>
+            Create a Pipeline task for{" "}
+            <span className="font-mono font-semibold text-strong">
+              {repositoryName}#{issue.forgejo_issue_number}
+            </span>{" "}
+            and assign an agent to work on it.
+          </DialogDescription>
+        </DialogHeader>
+
+        <div className="space-y-4">
+          <div className="rounded-xl border border-[color:var(--border)] bg-[color:var(--surface-muted)] px-3 py-2">
+            <p className="truncate text-sm font-medium text-strong">
+              {issue.title}
+            </p>
+          </div>
+
+          <div className="space-y-1.5">
+            <label className="text-sm font-medium text-strong">
+              Board <span className="text-[color:var(--danger)]">*</span>
+            </label>
+            <select
+              value={boardId}
+              onChange={(e) => setBoardId(e.target.value)}
+              disabled={isSubmitting || boardsQuery.isLoading}
+              className="w-full rounded-xl border border-[color:var(--border)] bg-[color:var(--surface)] px-3 py-2 text-sm text-strong focus:outline-none focus:ring-2 focus:ring-[color:var(--accent)]"
+            >
+              {boardsQuery.isLoading ? (
+                <option>Loading boards…</option>
+              ) : boards.length === 0 ? (
+                <option>No boards available</option>
+              ) : (
+                boards.map((b) => (
+                  <option key={b.id} value={b.id}>
+                    {b.name}
+                  </option>
+                ))
+              )}
+            </select>
+          </div>
+
+          <div className="space-y-1.5">
+            <label className="text-sm font-medium text-strong">
+              Agent{" "}
+              <span className="text-xs font-normal text-muted">
+                (optional — leaves task unassigned if blank)
+              </span>
+            </label>
+            <select
+              value={agentId}
+              onChange={(e) => setAgentId(e.target.value)}
+              disabled={isSubmitting || !boardId || agentsQuery.isLoading}
+              className="w-full rounded-xl border border-[color:var(--border)] bg-[color:var(--surface)] px-3 py-2 text-sm text-strong focus:outline-none focus:ring-2 focus:ring-[color:var(--accent)]"
+            >
+              <option value="">Unassigned</option>
+              {agentsQuery.isLoading ? (
+                <option disabled>Loading agents…</option>
+              ) : (
+                agents.map((a) => (
+                  <option key={a.id} value={a.id}>
+                    {a.name}
+                    {a.is_board_lead ? " (lead)" : ""}
+                  </option>
+                ))
+              )}
+            </select>
+          </div>
+
+          <div className="space-y-1.5">
+            <label className="text-sm font-medium text-strong">Priority</label>
+            <select
+              value={priority}
+              onChange={(e) => setPriority(e.target.value)}
+              disabled={isSubmitting}
+              className="w-full rounded-xl border border-[color:var(--border)] bg-[color:var(--surface)] px-3 py-2 text-sm text-strong focus:outline-none focus:ring-2 focus:ring-[color:var(--accent)]"
+            >
+              <option value="low">Low</option>
+              <option value="medium">Medium</option>
+              <option value="high">High</option>
+              <option value="critical">Critical</option>
+            </select>
+          </div>
+
+          <div className="space-y-1.5">
+            <label className="text-sm font-medium text-strong">
+              Instructions{" "}
+              <span className="text-xs font-normal text-muted">(optional)</span>
+            </label>
+            <Textarea
+              value={instructions}
+              onChange={(e) => setInstructions(e.target.value)}
+              disabled={isSubmitting}
+              rows={3}
+              placeholder="Additional context or instructions for the agent…"
+              className="resize-none text-sm"
+            />
+          </div>
+
+          {agentId ? (
+            <div className="flex items-center gap-3">
+              {toggleSwitch(startImmediately, setStartImmediately, isSubmitting)}
+              <span className="space-y-0.5">
+                <span className="block text-sm font-medium text-strong">
+                  Start immediately
+                </span>
+                <span className="block text-xs text-muted">
+                  Set task to <span className="font-mono">in_progress</span>{" "}
+                  on assign.
+                </span>
+              </span>
+            </div>
+          ) : null}
+        </div>
+
+        {error ? (
+          <div className="rounded-lg border border-[color:rgba(248,113,113,0.35)] bg-[color:rgba(248,113,113,0.08)] p-3 text-xs text-[color:var(--danger)]">
+            {error}
+          </div>
+        ) : null}
+
+        <DialogFooter>
+          <Button
+            variant="outline"
+            onClick={() => onOpenChange(false)}
+            disabled={isSubmitting}
+          >
+            Cancel
+          </Button>
+          <Button
+            onClick={handleSubmit}
+            disabled={isSubmitting || !boardId}
+          >
+            {isSubmitting ? "Assigning…" : agentId ? "Assign Agent" : "Create Task"}
+          </Button>
+        </DialogFooter>
+      </DialogContent>
+    </Dialog>
+  );
+}

frontend/src/components/git/ForgejoIssueDetailDialog.tsx

@@ -2,7 +2,7 @@
 
 import { useEffect, useMemo, useState } from "react";
 
-import { ExternalLink, Loader2, MessageSquarePlus, Pencil, XCircle } from "lucide-react";
+import { ExternalLink, Loader2, MessageSquarePlus, Pencil, UserPlus, XCircle } from "lucide-react";
 
 import {
   Dialog,
@@ -20,6 +20,7 @@ import {
   type ForgejoIssue,
   type ForgejoIssueDetail,
 } from "@/lib/api-forgejo";
+import { AssignIssueAgentDialog } from "@/components/git/AssignIssueAgentDialog";
 import { CloseForgejoIssueDialog } from "@/components/git/CloseForgejoIssueDialog";
 import { EditForgejoIssueDialog } from "@/components/git/EditForgejoIssueDialog";
 import { PostForgejoCommentDialog } from "@/components/git/PostForgejoCommentDialog";
@@ -70,6 +71,7 @@ export function ForgejoIssueDetailDialog({
   const [isCommentDialogOpen, setIsCommentDialogOpen] = useState(false);
   const [isEditDialogOpen, setIsEditDialogOpen] = useState(false);
   const [isCloseIssueDialogOpen, setIsCloseIssueDialogOpen] = useState(false);
+  const [isAssignDialogOpen, setIsAssignDialogOpen] = useState(false);
 
   const loadDetail = (id: string) => {
     let cancelled = false;
@@ -202,6 +204,15 @@ export function ForgejoIssueDetailDialog({
                 <MessageSquarePlus className="h-3.5 w-3.5" />
                 Comment
               </Button>
+              <Button
+                variant="outline"
+                size="sm"
+                className="h-9 gap-2 rounded-xl px-3 text-xs font-semibold"
+                onClick={() => setIsAssignDialogOpen(true)}
+              >
+                <UserPlus className="h-3.5 w-3.5" />
+                Assign Agent
+              </Button>
               <a
                 href={active.html_url}
                 target="_blank"
@@ -385,6 +396,17 @@ export function ForgejoIssueDetailDialog({
         </DialogContent>
       </Dialog>
 
+      <AssignIssueAgentDialog
+        issue={issue}
+        repositoryName={repositoryName}
+        open={isAssignDialogOpen}
+        onOpenChange={setIsAssignDialogOpen}
+        onSuccess={() => {
+          setIsAssignDialogOpen(false);
+          onRefresh?.();
+        }}
+      />
+
       <CloseForgejoIssueDialog
         issue={issue}
         repositoryName={repositoryName}

frontend/src/lib/api-forgejo.ts

@@ -429,6 +429,39 @@ export interface CreateIssueResponse {
   repository_id: string;
 }
 
+export interface AssignIssueAgentRequest {
+  board_id?: string;
+  assigned_agent_id?: string;
+  priority?: string;
+  status?: "inbox" | "in_progress";
+  start_immediately?: boolean;
+  instructions?: string;
+}
+
+export interface AssignIssueAgentResponse {
+  success: boolean;
+  created: boolean;
+  issue_id: string;
+  task_id: string;
+  board_id: string;
+  assigned_agent_id: string | null;
+  status: string;
+  title: string;
+}
+
+export async function assignIssueToAgent(
+  issueId: string,
+  data: AssignIssueAgentRequest,
+): Promise<AssignIssueAgentResponse> {
+  return fetchJson<AssignIssueAgentResponse>(
+    `/api/v1/forgejo/issues/${issueId}/task`,
+    {
+      method: "POST",
+      body: JSON.stringify(data),
+    },
+  );
+}
+
 export async function createForgejoIssue(
   data: CreateIssueRequest,
 ): Promise<CreateIssueResponse> {