fetch_github_issues_by_author.sh

#!/bin/sh

# fetch_github_issues_by_author.sh
# Fetch GitHub issues by author with pagination support

# Usage (installed):
#   fetch_github_issues_by_author.sh [author]
#
# Usage (direct from gist, argument passed to sh via -s):
#   curl -fsSL https://gist.github.com/RichardFevrier/b3026bb2416d10e35781d276e9ed2f54/raw/fetch_github_issues_by_author.sh | sh -s <author>
#
# Optional env:
#   GITHUB_TOKEN=ghp_xxx   — to avoid API rate limits


# ── Dependency check ─────────────────────────────────────────────────────────

if ! command -v curl >/dev/null 2>&1 && ! command -v wget >/dev/null 2>&1; then
    printf 'Error: curl or wget is required for GitHub API calls\n' >&2
    exit 1
fi

# ── Helpers ──────────────────────────────────────────────────────────────────

# _api_get <url>  — fetch URL following redirects, always print body (even on error)
_api_get() (
    url="$1"
    if command -v curl >/dev/null 2>&1; then
        if [ -n "$GITHUB_TOKEN" ]; then
            curl -sL -H "Accept: application/vnd.github+json" -H "Authorization: Bearer ${GITHUB_TOKEN}" "$url"
        else
            curl -sL "$url"
        fi
    else
        if [ -n "$GITHUB_TOKEN" ]; then
            wget -qO- --header="Accept: application/vnd.github+json" --header="Authorization: Bearer ${GITHUB_TOKEN}" "$url"
        else
            wget -qO- "$url"
        fi
    fi
)

# ── Core predicates ───────────────────────────────────────────────────────────

PER_PAGE=100
TOTAL_PAGES=1
CURRENT_PAGE=1

while [ $CURRENT_PAGE -le $TOTAL_PAGES ]; do
    RESPONSE=$(_api_get "https://api.github.com/search/issues?q=author:${1}&per_page=${PER_PAGE}&page=${CURRENT_PAGE}")

    # Extract total count from first page response to calculate total pages
    if [ $CURRENT_PAGE -eq 1 ]; then
        TOTAL_COUNT=$(echo "$RESPONSE" | jq '.total_count // 0')
        if [ $TOTAL_COUNT -eq 0 ]; then
            break
        fi
        TOTAL_PAGES=$(( (TOTAL_COUNT + PER_PAGE - 1) / PER_PAGE ))
    fi

    # Output issues for this page
    echo "$RESPONSE" | jq --arg page "$CURRENT_PAGE" '.items[] | {title: .title, body: .body}'

    CURRENT_PAGE=$((CURRENT_PAGE + 1))
done