| 1 | import { GitBranch, Pencil } from "lucide-react"; |
| 2 | import { useState } from "react"; |
| 3 | import { useFetcher } from "react-router"; |
| 4 | |
| 5 | import { ErrorText } from "./ui"; |
| 6 | import { Button } from "./ui/button"; |
| 7 | import { Hint } from "./ui/hint"; |
| 8 | import { Command, CommandEmpty, CommandGroup, CommandInput, CommandItem, CommandList } from "./ui/command"; |
| 9 | import { Popover, PopoverContent, PopoverTrigger } from "./ui/popover"; |
| 10 | |
| 11 | /** |
| 12 | * The branch a pull request merges into, and for someone who may change |
| 13 | * it, a menu of the repository's branches. The names are fetched when the |
| 14 | * menu opens; choosing one posts `action=base` with `base`. |
| 15 | */ |
| 16 | export function BaseBranch({ |
| 17 | base, |
| 18 | head, |
| 19 | canChange, |
| 20 | branchesUrl, |
| 21 | }: { |
| 22 | base: string; |
| 23 | /** Its own branch, which it cannot merge into. */ |
| 24 | head: string | null; |
| 25 | canChange: boolean; |
| 26 | /** Where the branch names are, as JSON. */ |
| 27 | branchesUrl: string; |
| 28 | }) { |
| 29 | const names = useFetcher<{ branches: string[] }>(); |
| 30 | const save = useFetcher<{ error?: string } | null>(); |
| 31 | const [open, setOpen] = useState(false); |
| 32 | const shown = save.state !== "idle" ? String(save.formData?.get("base") ?? base) : base; |
| 33 | const choose = (branch: string) => { |
| 34 | setOpen(false); |
| 35 | if (branch === base) return; |
| 36 | const form = new FormData(); |
| 37 | form.set("action", "base"); |
| 38 | form.set("base", branch); |
| 39 | save.submit(form, { method: "post" }); |
| 40 | }; |
| 41 | const name = <span className="font-mono text-fg">{shown}</span>; |
| 42 | if (!canChange) return name; |
| 43 | return ( |
| 44 | <> |
| 45 | <Popover |
| 46 | open={open} |
| 47 | onOpenChange={(next) => { |
| 48 | setOpen(next); |
| 49 | if (next && names.state === "idle" && !names.data) names.load(branchesUrl); |
| 50 | }} |
| 51 | > |
| 52 | <Hint label="Change the branch it merges into"> |
| 53 | <PopoverTrigger asChild> |
| 54 | <Button |
| 55 | type="button" |
| 56 | variant="ghost" |
| 57 | size="inline" |
| 58 | className="group gap-1 border border-transparent px-1 font-mono font-normal text-fg hover:border-line" |
| 59 | > |
| 60 | {shown} |
| 61 | <Pencil size={12} className="text-faint group-hover:text-fg" /> |
| 62 | <span className="sr-only">Change the branch it merges into</span> |
| 63 | </Button> |
| 64 | </PopoverTrigger> |
| 65 | </Hint> |
| 66 | <PopoverContent align="start" className="w-72 p-0"> |
| 67 | <Command> |
| 68 | <CommandInput placeholder="Find a branch to merge into" /> |
| 69 | <CommandList> |
| 70 | {names.data ? ( |
| 71 | <CommandEmpty>No branch by that name.</CommandEmpty> |
| 72 | ) : ( |
| 73 | <p className="px-3 py-4 text-sm text-faint">Reading branches…</p> |
| 74 | )} |
| 75 | <CommandGroup heading="Merge into"> |
| 76 | {(names.data?.branches ?? []) |
| 77 | .filter((branch) => branch !== head) |
| 78 | .map((branch) => ( |
| 79 | <CommandItem key={branch} value={branch} onSelect={() => choose(branch)}> |
| 80 | <GitBranch /> |
| 81 | <span className="truncate font-mono text-[0.8125rem]">{branch}</span> |
| 82 | </CommandItem> |
| 83 | ))} |
| 84 | </CommandGroup> |
| 85 | </CommandList> |
| 86 | </Command> |
| 87 | <p className="border-t border-line px-3 py-2 text-xs text-faint"> |
| 88 | Its checks, mergeability and whether it is up to date are worked out against the new base. |
| 89 | </p> |
| 90 | </PopoverContent> |
| 91 | </Popover> |
| 92 | {save.data?.error && ( |
| 93 | <span className="basis-full"> |
| 94 | <ErrorText>{save.data.error}</ErrorText> |
| 95 | </span> |
| 96 | )} |
| 97 | </> |
| 98 | ); |
| 99 | } |