#!/usr/bin/env bash
set -euo pipefail

# =============================================================================
# phase4_post_check.sh — Verify Phase 4 (Repo Migration) succeeded
# Checks for each repo:
#   1. Exists on primary under the org
#   2. Has at least one commit (migration actually imported content)
#   3. Default branch matches GitHub source
#   4. Mirror exists on Fedora under admin user
#   5. Mirror has mirror=true flag set
# Exits 0 only if ALL checks pass.
# =============================================================================

SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
source "${SCRIPT_DIR}/lib/common.sh"

load_env
require_vars GITEA_ADMIN_TOKEN GITEA_BACKUP_ADMIN_TOKEN \
             GITEA_INTERNAL_URL GITEA_BACKUP_INTERNAL_URL \
             GITEA_ORG_NAME GITEA_ADMIN_USER \
             GITHUB_USERNAME GITHUB_TOKEN \
             REPO_1_NAME REPO_2_NAME REPO_3_NAME

log_info "=== Phase 4 Post-Check ==="

REPOS=("$REPO_1_NAME" "$REPO_2_NAME" "$REPO_3_NAME")
PASS=0
FAIL=0

# Helper: run a check, track results
run_check() {
  local description="$1"; shift
  if "$@" 2>/dev/null; then
    log_success "$description"
    PASS=$((PASS + 1))
  else
    log_error "FAIL: $description"
    FAIL=$((FAIL + 1))
  fi
}

for repo in "${REPOS[@]}"; do
  log_info "--- Checking repo: ${repo} ---"

  # Check 1: Repo exists on primary
  check_repo_exists() {
    gitea_api GET "/repos/${GITEA_ORG_NAME}/$1" >/dev/null
  }
  run_check "Primary: ${GITEA_ORG_NAME}/${repo} exists" check_repo_exists "$repo"

  # Check 2: Repo has commits (migration imported content)
  check_commits() {
    local commits
    commits=$(gitea_api GET "/repos/${GITEA_ORG_NAME}/$1/commits?limit=1")
    local count
    count=$(printf '%s' "$commits" | jq 'length')
    [[ "$count" -gt 0 ]]
  }
  run_check "Primary: ${repo} has commits" check_commits "$repo"

  # Check 3: Default branch matches GitHub source
  check_default_branch() {
    local gitea_branch github_branch
    gitea_branch=$(gitea_api GET "/repos/${GITEA_ORG_NAME}/$1" | jq -r '.default_branch')
    github_branch=$(github_api GET "/repos/${GITHUB_USERNAME}/$1" | jq -r '.default_branch')
    [[ "$gitea_branch" == "$github_branch" ]]
  }
  run_check "Primary: ${repo} default branch matches GitHub" check_default_branch "$repo"

  # Check 4: Mirror exists on Fedora
  check_mirror_exists() {
    gitea_backup_api GET "/repos/${GITEA_ADMIN_USER}/$1" >/dev/null
  }
  run_check "Fedora: ${GITEA_ADMIN_USER}/${repo} exists" check_mirror_exists "$repo"

  # Check 5: Mirror has mirror=true
  check_mirror_flag() {
    local is_mirror
    is_mirror=$(gitea_backup_api GET "/repos/${GITEA_ADMIN_USER}/$1" | jq -r '.mirror')
    [[ "$is_mirror" == "true" ]]
  }
  run_check "Fedora: ${repo} has mirror=true" check_mirror_flag "$repo"
done

# Summary
printf '\n'
log_info "Results: ${PASS} passed, ${FAIL} failed"

if [[ $FAIL -gt 0 ]]; then
  log_error "Phase 4 post-check FAILED"
  exit 1
else
  log_success "Phase 4 post-check PASSED — all repos migrated and mirrored"
  exit 0
fi