#!/bin/bash

# ====================================================================================
# SCRIPT TO EXPORT SR&ED-ELIGIBLE GITHUB ISSUES TO A MARKDOWN FILE
# ====================================================================================
set -e # Exit script if a command fails

# --- Configuration ---
OUTPUT_FILE="sred-issues-export.md"
# This is the label we will use to identify SR&ED-eligible tasks
SRED_LABEL="sred-eligible" 
ISSUE_LIMIT=1000

echo "🚀 Starting export of SR&ED-eligible issues to '${OUTPUT_FILE}'..."

# --- Step 1: Dependency Check ---
echo "1. Checking for 'gh' CLI dependency..."
if ! command -v gh &> /dev/null; then
    echo "❌ ERROR: GitHub CLI ('gh') is not installed. Please install it to continue."
    exit 1
fi
echo "✅ 'gh' CLI found."

# --- Step 2: Initialize Output File ---
echo "# Export of SR&ED-Eligible Issues" > "$OUTPUT_FILE"
echo "" >> "$OUTPUT_FILE"
echo "*This document lists the systematic investigations and experimental development tasks undertaken during this period. Export generated on $(date)*." >> "$OUTPUT_FILE"
echo "" >> "$OUTPUT_FILE"

# --- Step 3: Fetch SR&ED-Eligible Issues ---
echo "2. Fetching open issues with the '${SRED_LABEL}' label..."

# We use 'gh issue list' with a JSON output and parse it with 'jq' for robustness.
# This is more reliable than parsing text output.
issue_numbers=$(gh issue list --state open --label "${SRED_LABEL}" --limit $ISSUE_LIMIT --json number | jq -r '.[].number')

if [ -z "$issue_numbers" ]; then
    echo "⚠️ No open issues found with the label '${SRED_LABEL}'. The export file will be minimal."
    echo "" >> "$OUTPUT_FILE"
    echo "**No SR&ED-eligible issues found for this period.**" >> "$OUTPUT_FILE"
    exit 0
fi

total_issues=$(echo "$issue_numbers" | wc -l | xargs)
echo "✅ Found ${total_issues} SR&ED-eligible issue(s)."

# --- Step 4: Loop Through Each Issue and Format the Output ---
echo "3. Formatting details for each issue..."

current_issue=0
for number in $issue_numbers; do
    current_issue=$((current_issue + 1))
    echo "  -> Processing issue #${number} (${current_issue}/${total_issues})"
    
    # Use 'gh issue view' with a template to format the output for each issue
    # and append it to the output file.
    gh issue view "$number" --json number,title,body,author,createdAt --template \
'\n### Task: [#{{.number}}] {{.title}}\n\n**Hypothesis/Goal:** \n> *(Briefly describe the technological uncertainty this task addresses. What was the technical challenge or question?)*\n\n**Systematic Investigation:**\n{{if .body}}\n{{.body}}\n{{else}}\n*No detailed description provided in the issue.*\n{{end}}\n\n**Team:** {{.author.login}} | **Date Initiated:** {{timefmt "2006-01-02" .createdAt}}\n***\n' >> "$OUTPUT_FILE"
done

echo ""
echo "🎉 Export complete!"
echo "Your SR&ED-ready markdown file is ready: ${OUTPUT_FILE}"