export type ReviewScope = "git-diff" | "last-commit" | "all-files";

export type ChangeStatus = "modified" | "added" | "deleted" | "renamed";

export interface ReviewFileComparison {
  status: ChangeStatus;
  oldPath: string | null;
  newPath: string | null;
  displayPath: string;
  hasOriginal: boolean;
  hasModified: boolean;
  additions?: number;
  deletions?: number;
}

export interface ReviewFile {
  id: string;
  path: string;
  worktreeStatus: ChangeStatus | null;
  hasWorkingTreeFile: boolean;
  inGitDiff: boolean;
  inLastCommit: boolean;
  inAllFiles: boolean;
  gitDiff: ReviewFileComparison | null;
  lastCommit: ReviewFileComparison | null;
  allFiles: ReviewFileComparison | null;
  allFilesReferenceCount?: number;
  allFilesOutgoingReferences?: string[];
  allFilesIncomingReferences?: string[];
}

export interface ReviewFileContents {
  originalContent: string;
  modifiedContent: string;
}

export type CommentSide = "added" | "deleted" | "file";

export type CommentIntent = "fix" | "discuss";

export interface DiffReviewComment {
  id: string;
  fileId: string;
  scope: ReviewScope;
  side: CommentSide;
  intent: CommentIntent;
  startLine: number | null;
  endLine: number | null;
  body: string;
}

export interface ReviewDraft {
  allComment: string;
  allIntent: CommentIntent;
  comments: DiffReviewComment[];
}

export type ReviewFocus = "navigator" | "diff" | "comments";

export interface ReviewLineTarget {
  side: Exclude<CommentSide, "file">;
  line: number;
}

export interface ReviewState {
  activeScope: ReviewScope;
  activeFileId: string | null;
  searchQuery: string;
  focus: ReviewFocus;
  wrapLines: boolean;
  hideUnchanged: boolean;
  selectedCommentIndex: number;
  selectedLineTargetByScopeFile: Record<string, ReviewLineTarget>;
  draft: ReviewDraft;
}

export interface ReviewSubmitPayload extends ReviewDraft {
  type: "submit";
}

export interface ReviewCancelPayload {
  type: "cancel";
}

export type ReviewResult = ReviewSubmitPayload | ReviewCancelPayload;

export function formatScopeLabel(scope: ReviewScope): string {
  switch (scope) {
    case "git-diff": return "git diff";
    case "last-commit": return "last commit";
    case "all-files": return "all files";
  }
}

export function scopeFileKey(scope: ReviewScope, fileId: string): string {
  return `${scope}::${fileId}`;
}

export function formatIntentLabel(intent: CommentIntent): string {
  switch (intent) {
    case "fix": return "FIX";
    case "discuss": return "DISCUSS";
  }
}