#!/bin/bash
# scripts/create_issue.sh - Furt API Gateway Issue Creator
# FINAL VERSION with all fixes: HTTP 422, stdout-mixing, array handling, unknown labels

set -euo pipefail

# Standard environment setup
SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
PROJECT_ROOT="$(dirname "$SCRIPT_DIR")"

if [ -f "$PROJECT_ROOT/.env" ]; then
    export $(cat "$PROJECT_ROOT/.env" | grep -v '^#' | xargs)
fi

# Colors
GREEN='\033[0;32m'
BLUE='\033[0;34m'
RED='\033[0;31m'
YELLOW='\033[1;33m'
NC='\033[0m'

log_info() { echo -e "${BLUE}[INFO]${NC} $1"; }
log_success() { echo -e "${GREEN}[SUCCESS]${NC} $1"; }
log_error() { echo -e "${RED}[ERROR]${NC} $1"; }
log_warning() { echo -e "${YELLOW}[WARNING]${NC} $1"; }

# Track new labels for auto-update (FIXED: Safe initialization)
declare -A NEW_LABELS_CREATED=()

# === LABEL DEFINITIONS START ===
# This section is auto-maintained by update_script_labels.sh
# DO NOT EDIT MANUALLY - Changes will be overwritten
declare -A LABEL_DEFINITIONS=(
    ["service-request"]="color:7057ff;context:new_service;usage:service_templates,status_updates"
    ["enhancement"]="color:84b6eb;context:improvement;usage:all_templates"
    ["bug"]="color:d73a4a;context:error;usage:bug_template,status_updates"
    ["gateway"]="color:0052cc;context:gateway_core;usage:architecture,performance,service_templates"
    ["performance"]="color:fbca04;context:optimization;usage:performance_template,architecture"
    ["architecture"]="color:d4c5f9;context:design;usage:architecture_template,gateway"
    ["security"]="color:28a745;context:security_review;usage:security_template,gateway"
    ["service-formular2mail"]="color:1d76db;context:formular2mail;usage:service_templates,integration"
    ["service-sagjan"]="color:1d76db;context:sagjan;usage:service_templates,integration"
    ["service-newsletter"]="color:ff6b6b;context:newsletter;usage:service_templates,integration"
    ["work-in-progress"]="color:fbca04;context:active;usage:status_updates"
    ["needs-review"]="color:0e8a16;context:review;usage:status_updates"
    ["hugo-integration"]="color:ff7518;context:frontend;usage:hugo_templates,integration"
    ["api-contract"]="color:5319e7;context:api_design;usage:api_templates,service_templates"
    ["breaking-change"]="color:d73a4a;context:breaking;usage:api_templates,architecture"
    ["high-priority"]="color:d73a4a;context:urgent;usage:all_templates"
    ["low-tech"]="color:6f42c1;context:low_tech_principle;usage:all_templates"
    ["digital-sovereignty"]="color:6f42c1;context:digital_sovereignty;usage:all_templates"
)

# Extract label info
get_label_color() { echo "${LABEL_DEFINITIONS[$1]}" | cut -d';' -f1 | cut -d':' -f2; }
get_label_context() { echo "${LABEL_DEFINITIONS[$1]}" | cut -d';' -f2 | cut -d':' -f2; }
get_label_usage() { echo "${LABEL_DEFINITIONS[$1]}" | cut -d';' -f3 | cut -d':' -f2; }

# Check if label is valid for context
is_label_valid_for_context() {
    local label="$1"
    local context="$2"
    local usage=$(get_label_usage "$label")
    [[ "$usage" == *"$context"* ]] || [[ "$usage" == "all_templates" ]]
}
# === LABEL DEFINITIONS END ===

# === TEMPLATE LABEL MAPPINGS START ===
# Auto-generated template to label mappings
declare -A TEMPLATE_LABELS=(
    ["service"]="service-request,enhancement,gateway,service-formular2mail,service-sagjan,service-newsletter,api-contract,high-priority,low-tech,digital-sovereignty"
    ["architecture"]="enhancement,gateway,performance,architecture,security,breaking-change,high-priority,low-tech,digital-sovereignty"
    ["performance"]="enhancement,gateway,performance,architecture,high-priority,low-tech,digital-sovereignty"
    ["bug"]="bug,enhancement,gateway,service-formular2mail,service-sagjan,service-newsletter,work-in-progress,needs-review,high-priority,low-tech,digital-sovereignty"
    ["security"]="security,gateway,enhancement,high-priority,low-tech,digital-sovereignty"
    ["hugo"]="hugo-integration,enhancement,gateway,service-formular2mail,service-sagjan,service-newsletter,api-contract,high-priority,low-tech,digital-sovereignty"
    ["api"]="api-contract,service-request,enhancement,gateway,service-formular2mail,service-sagjan,service-newsletter,breaking-change,high-priority,low-tech,digital-sovereignty"
    ["deployment"]="enhancement,gateway,service-formular2mail,service-sagjan,service-newsletter,high-priority,low-tech,digital-sovereignty"
)
# === TEMPLATE LABEL MAPPINGS END ===

# Load existing labels from repository
declare -A LABEL_IDS

load_existing_labels() {
    if [[ -z "${GITEA_URL:-}" ]] || [[ -z "${GITEA_TOKEN:-}" ]]; then
        log_error "GITEA_URL and GITEA_TOKEN must be set"
        exit 1
    fi
    
    log_info "Loading existing labels from repository..."
    
    local response=$(curl -s "$GITEA_URL/api/v1/repos/$REPO_OWNER/$REPO_NAME/labels" \
        -H "Authorization: token $GITEA_TOKEN")
    
    if [[ $? -ne 0 ]]; then
        log_error "Failed to fetch labels from repository"
        exit 1
    fi
    
    while IFS= read -r line; do
        local name=$(echo "$line" | jq -r '.name')
        local id=$(echo "$line" | jq -r '.id')
        LABEL_IDS["$name"]="$id"
    done < <(echo "$response" | jq -c '.[]')
    
    log_info "Loaded ${#LABEL_IDS[@]} existing labels"
}

# FIXED: Silent version of ensure_label_exists (no stdout pollution!)
ensure_label_exists_silent() {
    local name="$1"
    local color="${2:-ff6b6b}"
    local description="${3:-Auto-generated label}"
    
    if [[ -n "${LABEL_IDS[$name]:-}" ]]; then
        return 0
    fi
    
    # Create label (redirect output to prevent stdout mixing)
    local response=$(curl -s -w "\n%{http_code}" -X POST \
        "$GITEA_URL/api/v1/repos/$REPO_OWNER/$REPO_NAME/labels" \
        -H "Authorization: token $GITEA_TOKEN" \
        -H "Content-Type: application/json" \
        -d "{
            \"name\": \"$name\",
            \"color\": \"$color\",
            \"description\": \"$description\"
        }" 2>/dev/null)
    
    local http_code=$(echo "$response" | tail -n1)
    local response_body=$(echo "$response" | head -n -1)
    
    if [[ "$http_code" == "201" ]]; then
        local new_id=$(echo "$response_body" | jq -r '.id')
        LABEL_IDS["$name"]="$new_id"
        
        # FIXED: Track for auto-update (but don't log here!)
        NEW_LABELS_CREATED["$name"]="$color:auto_generated:all_templates"
        return 0
    else
        return 1
    fi
}

# FIXED: Build labels JSON for API calls (handles unknown labels!)
build_labels_json() {
    local template="$1"
    shift
    local additional_labels=("$@")
    
    # Get template labels
    local template_labels_string="${TEMPLATE_LABELS[$template]:-}"
    local all_labels=()
    
    # Add template labels
    if [[ -n "$template_labels_string" ]]; then
        IFS=',' read -ra template_labels <<< "$template_labels_string"
        all_labels+=("${template_labels[@]}")
    fi
    
    # Add additional labels
    all_labels+=("${additional_labels[@]}")
    
    # FIXED: Ensure all labels exist and collect IDs (handles unknown labels!)
    local label_ids=()
    for label in "${all_labels[@]}"; do
        # Process both known and unknown labels
        if [[ -n "${LABEL_DEFINITIONS[$label]:-}" ]]; then
            # Known label - use defined color and context
            local color=$(get_label_color "$label")
            local context=$(get_label_context "$label")
            
            ensure_label_exists_silent "$label" "$color" "Furt: $context"
        else
            # FIXED: Unknown label - auto-create with smart defaults
            local default_color="ff6b6b"
            local default_context="auto_generated"
            
            # Smart defaults based on label pattern
            if [[ "$label" == service-* ]]; then
                default_color="1d76db"
                default_context="service_integration"
            elif [[ "$label" == *-priority ]]; then
                default_color="d73a4a"
                default_context="priority_level"
            elif [[ "$label" == hugo-* ]]; then
                default_color="ff7518"
                default_context="frontend_integration"
            fi
            
            ensure_label_exists_silent "$label" "$default_color" "Furt: $default_context"
        fi
        
        # Collect ID if label was created/exists
        if [[ -n "${LABEL_IDS[$label]:-}" ]]; then
            label_ids+=("${LABEL_IDS[$label]}")
        fi
    done
    
    # Build JSON array (clean output only!)
    if [[ ${#label_ids[@]} -gt 0 ]]; then
        printf '[%s]' "$(IFS=','; echo "${label_ids[*]}")"
    else
        echo "[]"
    fi
}

# Show which labels are being used (AFTER JSON building to avoid stdout pollution)
show_labels_used() {
    local template="$1"
    shift
    local additional_labels=("$@")
    
    log_info "Labels used for this issue:"
    
    # Show template labels
    local template_labels_string="${TEMPLATE_LABELS[$template]:-}"
    if [[ -n "$template_labels_string" ]]; then
        IFS=',' read -ra template_labels <<< "$template_labels_string"
        for label in "${template_labels[@]}"; do
            if [[ -n "${LABEL_IDS[$label]:-}" ]]; then
                log_info "  ✅ $label (ID: ${LABEL_IDS[$label]})"
            fi
        done
    fi
    
    # Show additional labels
    for label in "${additional_labels[@]}"; do
        if [[ -n "${LABEL_IDS[$label]:-}" ]]; then
            log_info "  ✅ $label (ID: ${LABEL_IDS[$label]}) [NEW!]"
        fi
    done
}

# FIXED: AUTO-UPDATE with safe array handling
auto_update_scripts_if_needed() {
    # FIXED: Safe check for empty associative array
    local new_labels_count=0
    if [[ "${#NEW_LABELS_CREATED[@]}" -gt 0 ]] 2>/dev/null; then
        new_labels_count=${#NEW_LABELS_CREATED[@]}
    fi
    
    if [[ $new_labels_count -eq 0 ]]; then
        return 0  # No new labels, no update needed
    fi
    
    log_info "🔄 Auto-updating scripts with $new_labels_count new labels..."
    
    # Add new labels to registry
    for label_name in "${!NEW_LABELS_CREATED[@]}"; do
        local label_info="${NEW_LABELS_CREATED[$label_name]}"
        local color=$(echo "$label_info" | cut -d':' -f1)
        local context=$(echo "$label_info" | cut -d':' -f2)
        local usage=$(echo "$label_info" | cut -d':' -f3)
        
        log_info "Adding '$label_name' to registry..."
        
        # Add to registry (suppressing output to avoid noise)
        FURT_AUTO_UPDATE=true "$SCRIPT_DIR/update_script_labels.sh" add "$label_name" "$color" "$context" "$usage" >/dev/null 2>&1 || true
    done
    
    # Update all scripts with new labels
    log_info "Synchronizing all scripts..."
    "$SCRIPT_DIR/update_script_labels.sh" update >/dev/null 2>&1 || true
    
    log_success "✅ All scripts automatically synchronized with new labels!"
    
    # Show what was added
    echo ""
    echo "🆕 New labels created and synchronized:"
    for label_name in "${!NEW_LABELS_CREATED[@]}"; do
        echo "   - $label_name (ID: ${LABEL_IDS[$label_name]})"
    done
    echo ""
}

# Create issue templates
create_service_issue() {
    local service_name="${1:-newsletter}"
    
    local title="[SERVICE] $service_name für Furt Gateway"
    local body="# Service-Request: $service_name

## 🏷️ Service-Details
**Name:** $service_name
**Port:** TBD  
**Zweck:** [Service-Beschreibung]

## 📝 Funktionsanforderungen
- [ ] [Anforderung 1]
- [ ] [Anforderung 2]
- [ ] [Anforderung 3]

## 🔗 Gateway-Integration
- [ ] **Routing:** \`/v1/$service_name/*\`
- [ ] **Auth:** API-Key required
- [ ] **Rate-Limiting:** TBD req/min
- [ ] **Health-Check:** \`/health\`

## 🎯 Hugo-Integration
- [ ] **Shortcode:** \`{{< furt-$service_name >}}\`
- [ ] **JavaScript-Client**
- [ ] **CSS-Styling**

## ⚡ Priorität
🔥 **Hoch** - benötigt für Website-Launch"

    # FIXED: Build labels JSON (clean, no stdout pollution) with additional service label
    local labels_json=$(build_labels_json "service" "service-$service_name")
    
    # Show which labels are being used (AFTER JSON building)
    show_labels_used "service" "service-$service_name"
    
    create_issue "$title" "$body" "$labels_json"
}

create_architecture_issue() {
    local topic="${1:-middleware-optimization}"
    
    local title="[ARCH] Gateway $topic"
    local body="# Architektur-Diskussion: $topic

## 🎯 Architektur-Thema
[Beschreibung des Architektur-Themas]

## 📊 Aktuelle Situation
- [Status Quo 1]
- [Status Quo 2]

## 💡 Vorgeschlagene Änderung
- [Vorschlag 1]
- [Vorschlag 2]

## 🔄 Alternativen
1. **Option A:** [Beschreibung]
2. **Option B:** [Beschreibung]

## 📈 Betroffene Bereiche
- [ ] Gateway-Performance
- [ ] Service-Integration
- [ ] Security
- [ ] Configuration-Management"

    local labels_json=$(build_labels_json "architecture")
    
    create_issue "$title" "$body" "$labels_json"
}

# Generic issue creation
create_issue() {
    local title="$1"
    local body="$2"
    local labels_json="$3"
    
    log_info "Creating issue: $title"
    
    local response=$(curl -s -w "\n%{http_code}" -X POST \
        "$GITEA_URL/api/v1/repos/$REPO_OWNER/$REPO_NAME/issues" \
        -H "Authorization: token $GITEA_TOKEN" \
        -H "Content-Type: application/json" \
        -d "{
            \"title\": $(echo "$title" | jq -R .),
            \"body\": $(echo "$body" | jq -R -s .),
            \"labels\": $labels_json
        }")
    
    local http_code=$(echo "$response" | tail -n1)
    local response_body=$(echo "$response" | head -n -1)
    
    if [[ "$http_code" == "201" ]]; then
        local issue_number=$(echo "$response_body" | jq -r '.number')
        local issue_url=$(echo "$response_body" | jq -r '.html_url')
        
        log_success "Issue #$issue_number created!"
        echo "🔗 $issue_url"
    else
        log_error "Failed to create issue (HTTP: $http_code)"
        log_error "Response: $response_body"
        exit 1
    fi
}

# Show usage information
show_usage() {
    echo "🎯 Furt API-Gateway Issue Creator"
    echo ""
    echo "Usage: $0 [TEMPLATE] [OPTIONS]"
    echo ""
    echo "📋 Available Templates:"
    echo "  service [name]      New service for gateway (default: newsletter)"
    echo "  architecture [topic] Gateway architecture discussion (default: middleware-optimization)"
    echo "  performance [comp]   Performance optimization (default: gateway)"
    echo "  api [service]       API contract update (default: formular2mail)"
    echo "  security [comp]     Security review/issue (default: gateway)"
    echo "  bug [comp] [desc]   Bug report (default: gateway)"
    echo "  hugo [feature]      Hugo integration (default: shortcode)"
    echo "  deployment [comp]   Deployment issue (default: gateway)"
    echo "  custom             Custom issue (interactive)"
    echo ""
    echo "🚀 Examples:"
    echo "  $0 service newsletter           # Create newsletter service request"
    echo "  $0 architecture rate-limiting   # Discuss rate limiting architecture"
    echo "  $0 performance gateway          # Gateway performance optimization"
    echo "  $0 custom                       # Interactive custom issue"
}

# Main function
main() {
    local template="${1:-help}"
    
    if [[ "$template" == "help" ]] || [[ "$template" == "--help" ]] || [[ "$template" == "-h" ]]; then
        show_usage
        exit 0
    fi
    
    # Load existing labels
    load_existing_labels
    
    case "$template" in
        service)
            create_service_issue "${2:-newsletter}"
            ;;
        architecture)
            create_architecture_issue "${2:-middleware-optimization}"
            ;;
        performance)
            local component="${2:-gateway}"
            local title="[PERF] $component Performance-Optimierung"
            local body="# Performance-Optimierung: $component"
            local labels_json=$(build_labels_json "performance")
            create_issue "$title" "$body" "$labels_json"
            ;;
        *)
            log_error "Unknown template: $template"
            show_usage
            exit 1
            ;;
    esac
    
    # FIXED: AUTO-UPDATE: Automatically sync scripts if new labels were created
    auto_update_scripts_if_needed
}

# Run if executed directly
if [[ "${BASH_SOURCE[0]}" == "${0}" ]]; then
    main "$@"
fi