import { avatarContentTypeForFile, AVATAR_TYPE_ERROR } from "../shared/project-avatar.ts";

export type ProjectAvatarArgs =
  | { error: string }
  | { action: "set"; projectId: string; path: string }
  | { action: "clear"; projectId: string; yes: boolean };

export const PROJECT_AVATAR_USAGE =
  "Usage: raidiant-hub project avatar set <id> <image-file> | project avatar clear <id> [--yes]";

/** Parse `project avatar set|clear …` from CLI positional args. */
export const parseProjectAvatarArgs = (
  positional: ReadonlyArray<string>,
): ProjectAvatarArgs | undefined => {
  if (positional[0] !== "project" || positional[1] !== "avatar") return undefined;
  const flags = positional.filter((value) => value.startsWith("--"));
  const unknown = flags.find((value) => value !== "--yes");
  if (unknown) return { error: `Unknown project avatar option: ${unknown}` };
  const values = positional.filter((value) => !value.startsWith("--"));

  if (values[2] === "set") {
    if (!values[3] || !values[4]) return { error: PROJECT_AVATAR_USAGE };
    if (!avatarContentTypeForFile(values[4])) return { error: AVATAR_TYPE_ERROR };
    return { action: "set", projectId: values[3], path: values[4] };
  }
  if (values[2] === "clear") {
    if (!values[3]) return { error: PROJECT_AVATAR_USAGE };
    return { action: "clear", projectId: values[3], yes: flags.includes("--yes") };
  }
  return { error: PROJECT_AVATAR_USAGE };
};