#!/usr/bin/env bash
# Стандартные git remote: home (papatramp), kalinamall, github (PTah).
set -euo pipefail

OWNER="${OWNER:-PapaTramp}"
GITHUB_ORG="${GITHUB_ORG:-PTah}"
REPO="${REPO:-}"
WHAT_IF="${WHAT_IF:-0}"

log_step() { printf '[*] %s\n' "$1"; }
log_ok() { printf '[+] %s\n' "$1"; }

if ! git rev-parse --is-inside-work-tree >/dev/null 2>&1; then
  echo 'Run inside a git repository or set REPO.' >&2
  exit 1
fi

repo_name_from_url() {
  local url="$1" name=""
  if [[ "$url" =~ /([^/]+)/?$ ]]; then
    name="${BASH_REMATCH[1]}"
    name="${name%.git}"
    printf '%s\n' "$name"
  fi
}

repo_name="${REPO:-}"
if [[ -z "$repo_name" ]]; then
  for remote in kalinamall home github origin; do
    if url="$(git remote get-url "$remote" 2>/dev/null)"; then
      repo_name="$(repo_name_from_url "$url")"
      [[ -n "$repo_name" ]] && break
    fi
  done
fi
repo_name="${repo_name:-$(basename "$(git rev-parse --show-toplevel)")}"
repo_name="${repo_name%.git}"
home_url="ssh://git@git.papatramp.ru:2222/${OWNER}/${repo_name}.git"
kalinamall_url="ssh://git@git.kalinamall.ru:2222/${OWNER}/${repo_name}.git"
github_url="git@github.com:${GITHUB_ORG}/${repo_name}.git"

origin_remote_target() {
  local url
  url="$(git remote get-url origin 2>/dev/null | tr '[:upper:]' '[:lower:]' || true)"
  [[ -z "$url" ]] && return 0
  if [[ "$url" == *kalinamall* ]]; then echo kalinamall; return 0; fi
  if [[ "$url" == *papatramp* ]]; then echo home; return 0; fi
  if [[ "$url" == *github.com* ]]; then echo github; return 0; fi
}

set_remote() {
  local name="$1"
  local url="$2"
  local existing current old origin_target

  if [[ "$WHAT_IF" == '1' ]]; then
    log_step "WhatIf: remote $name -> $url"
    return 0
  fi

  if git remote | grep -Fxq "$name"; then
    current="$(git remote get-url "$name" | tr -d '\r\n')"
    if [[ "$current" == "$url" ]]; then
      log_ok "remote $name OK"
      return 0
    fi
    git remote set-url "$name" "$url"
    log_ok "remote $name updated -> $url"
    return 0
  fi

  if git remote | grep -Fxq origin; then
    origin_target="$(origin_remote_target || true)"
    if [[ "$origin_target" == "$name" ]]; then
      git remote rename origin "$name"
      git remote set-url "$name" "$url"
      log_ok "remote origin renamed to $name -> $url"
      return 0
    fi
  fi

  case "$name" in
    home) legacy=(gitea papatramp origin-home) ;;
    github) legacy=() ;;
    kalinamall) legacy=(gitea-kalinamall kalina) ;;
    *) legacy=() ;;
  esac

  if ((${#legacy[@]} > 0)); then
    for old in "${legacy[@]}"; do
      if git remote | grep -Fxq "$old"; then
        git remote rename "$old" "$name"
        git remote set-url "$name" "$url"
        log_ok "remote $old renamed to $name -> $url"
        return 0
      fi
    done
  fi

  git remote add "$name" "$url"
  log_ok "remote $name added -> $url"
}

log_step "Repo: $repo_name"
set_remote home "$home_url"
set_remote kalinamall "$kalinamall_url"
set_remote github "$github_url"

printf '\n'
git remote -v