#!/bin/bash
# GitHub Notifications Checker
# Filters PRs and releases, tracks state, returns JSON summary

set -e

STATE_FILE="${STATE_FILE:-memory/github-check-state.json}"
WORKSPACE="${WORKSPACE:-/home/node/.openclaw/workspace}"
cd "$WORKSPACE"

# Initialize state file if missing
if [ ! -f "$STATE_FILE" ]; then
    mkdir -p "$(dirname "$STATE_FILE")"
    echo '{"lastCheck":"1970-01-01T00:00:00Z","seenPRs":[],"seenReleases":[]}' > "$STATE_FILE"
fi

# Load last check time
LAST_CHECK=$(jq -r '.lastCheck' "$STATE_FILE")
NOW=$(date -u +"%Y-%m-%dT%H:%M:%SZ")

# Fetch notifications (PRs only)
PR_DATA=$(gh api 'notifications?all=true&per_page=100' 2>&1)

if [ $? -ne 0 ]; then
    echo '{"error":"GitHub API failed","details":"'"${PR_DATA//\"/\\\"}"'"}' | jq .
    exit 1
fi

# Filter PRs where user is mentioned or author
FILTERED_PRS=$(echo "$PR_DATA" | jq -r '[
  .[] | 
  select(.subject.type == "PullRequest") |
  select(.reason == "mention" or .reason == "author" or .reason == "review_requested") |
  {
    repo: .repository.full_name,
    title: .subject.title,
    url: .subject.url,
    updated: .updated_at,
    reason: .reason,
    id: (.repository.full_name + "#" + .subject.title)
  }
]')

# Filter releases
RELEASE_DATA=$(echo "$PR_DATA" | jq -r '[
  .[] |
  select(.subject.type == "Release") |
  {
    repo: .repository.full_name,
    title: .subject.title,
    updated: .updated_at,
    id: (.repository.full_name + "@" + .subject.title)
  }
]')

# Filter major releases (v*.0.0) + ALL Mirrowel/LLM-API-Key-Proxy releases
FILTERED_RELEASES=$(echo "$RELEASE_DATA" | jq -r '[
  .[] |
  select(
    (.repo == "Mirrowel/LLM-API-Key-Proxy") or
    (.title | test("^v[0-9]+\\.0\\.0"))
  ) |
  select(.title | test("(rc|pre|beta|alpha|nightly)") | not)
]')

# Load seen items
SEEN_PRS=$(jq -r '.seenPRs // []' "$STATE_FILE")
SEEN_RELEASES=$(jq -r '.seenReleases // []' "$STATE_FILE")

# Find new items
NEW_PRS=$(echo "$FILTERED_PRS" | jq --argjson seen "$SEEN_PRS" '[
  .[] | select(.id as $id | $seen | index($id) | not)
]')

NEW_RELEASES=$(echo "$FILTERED_RELEASES" | jq --argjson seen "$SEEN_RELEASES" '[
  .[] | select(.id as $id | $seen | index($id) | not)
]')

# Count new items
NEW_PR_COUNT=$(echo "$NEW_PRS" | jq 'length')
NEW_RELEASE_COUNT=$(echo "$NEW_RELEASES" | jq 'length')

# Update state
ALL_PR_IDS=$(echo "$FILTERED_PRS" | jq -r '[.[].id]')
ALL_RELEASE_IDS=$(echo "$FILTERED_RELEASES" | jq -r '[.[].id]')

jq -n \
  --arg now "$NOW" \
  --argjson prIds "$ALL_PR_IDS" \
  --argjson relIds "$ALL_RELEASE_IDS" \
  '{lastCheck:$now, seenPRs:$prIds, seenReleases:$relIds}' \
  > "$STATE_FILE"

# Output result
if [ "$NEW_PR_COUNT" -eq 0 ] && [ "$NEW_RELEASE_COUNT" -eq 0 ]; then
    echo '{"hasNew":false}'
    exit 0
fi

# Return new items
jq -n \
  --argjson prs "$NEW_PRS" \
  --argjson releases "$NEW_RELEASES" \
  '{hasNew:true, newPRs:$prs, newReleases:$releases}'