#!/bin/bash
# kugetsu - OpenCode Session Manager
# Main dispatcher - sources all modules

set -euo pipefail

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"

source "$SCRIPT_DIR/kugetsu-config.sh"
source "$SCRIPT_DIR/kugetsu-index.sh"
source "$SCRIPT_DIR/kugetsu-worktree.sh"
source "$SCRIPT_DIR/kugetsu-log.sh"
source "$SCRIPT_DIR/kugetsu-session.sh"

usage() {
    cat << 'EOF'
kugetsu - OpenCode Session Manager (Issue-Driven)

Usage:
    kugetsu init [--force]                            Initialize base + pm-agent sessions (requires TTY)
    kugetsu start <issue-ref> <message> [--debug]    Start task for issue (forks base session)
    kugetsu continue <issue-ref> [message] [--debug] Continue existing task for issue
    kugetsu delegate <message>                        Send message to PM agent (fire-and-forget)
    kugetsu logs [n]                                  Show recent delegation logs (default: 10)
    kugetsu status                                    Check kugetsu initialization status
    kugetsu doctor [--fix]                            Diagnose and fix kugetsu issues
    kugetsu notify [list|clear]                        Show or clear notifications
    kugetsu list                                     List all tracked sessions
    kugetsu prune [--force]                          Remove orphaned sessions (keeps base + pm-agent)
    kugetsu destroy <issue-ref> [-y]                  Delete session for issue
    kugetsu destroy --pm-agent [-y]                   Delete pm-agent session (not recommended)
    kugetsu destroy --base [-y]                      Delete base session
    kugetsu set-pr <issue-ref> <pr-url>            Set PR URL for session (for PR tracking)
    kugetsu context <issue-ref>                        Show context for issue
    kugetsu queue [list|stats|clear]                  Show queue status or statistics
    kugetsu queue enqueue <issue-ref> <message>       Enqueue a task (normally via delegate)
    kugetsu queue-daemon [start|stop|restart|status|logs]  Manage queue daemon
    kugetsu env [get|set|list]                        Manage agent environment variables
    kugetsu server [list|add|remove|default|get]     Manage git server configurations
    kugetsu help                                     Show this help

Issue Ref Format:
    instance/user/repo#number
    Example: github.com/shoko/kugetsu#14

Commands:
    init        Create base + pm-agent sessions via TUI. Requires terminal access.
                Use --force to reinitialize if sessions exist.
    start       Fork new session from base for specific issue.
                Requires pm-agent to be running (created by init).
    continue    Continue work on existing issue session.
    delegate    Send message to PM agent for task coordination.
                Fire-and-forget: returns immediately, runs in background.
                Use 'kugetsu logs' to check output.
    logs        Show recent delegation logs.
                Default: 10 most recent. Use 'kugetsu logs 20' for more.
    status      Check if kugetsu is initialized and PM agent is active.
    doctor      Diagnose kugetsu issues. Use --fix to attempt repairs.
    notify      Show or clear notifications from PM agent.
                Use 'kugetsu notify list' to see unread notifications.
    list        Show all sessions (base + pm-agent + forked issues).
    prune       Remove sessions not in index (orphaned from opencode).
                Use --force to skip confirmation.
    destroy     Delete specific issue, pm-agent, or base session.

Options:
    --debug   Show real-time debug output and capture to debug.log

PM Context:
    kugetsu reads ~/.kugetsu/pm-agent.md (if exists) and injects it
    into the PM agent session at init time. This allows customizing PM
    behavior without recreating the session.

Notifications:
    PM Agent writes task completion notifications to ~/.kugetsu/notifications.json
    Use 'kugetsu notify list' to see unread notifications.

Examples:
    kugetsu init
    kugetsu status
    kugetsu delegate "work on issue #5"
    kugetsu logs
    kugetsu logs 20
    kugetsu doctor
    kugetsu doctor --fix
    kugetsu notify list
    kugetsu notify clear
    kugetsu start github.com/shoko/kugetsu#14 "fix bug"
    kugetsu continue github.com/shoko/kugetsu#14 "add tests"
    kugetsu list
EOF
}

ensure_dirs() {
    mkdir -p "$SESSIONS_DIR"
}

ensure_worktree_dir() {
    mkdir -p "$WORKTREES_DIR"
}

issue_ref_to_filename() {
    local issue_ref="$1"
    echo "$issue_ref" | sed 's/[\/:]/-/g' | sed 's/#/-/'
}

filename_to_issue_ref() {
    local filename="$1"
    local name="${filename%.json}"
    echo "$name" | sed 's/-\([0-9]*\)$/#\1/' | sed 's/-/\//g'
}

issue_ref_to_context_file() {
    local issue_ref="$1"
    local context_filename=$(issue_ref_to_filename "$issue_ref")
    echo "$CONTEXT_DIR/${context_filename}.json"
}

kugetsu_context_load() {
    local issue_ref="$1"
    
    if [ "$ENABLE_CONTEXT_DUMP" != "true" ]; then
        echo ""
        return
    fi
    
    local context_file=$(issue_ref_to_context_file "$issue_ref")
    
    if [ ! -f "$context_file" ]; then
        echo ""
        return
    fi
    
    python3 << PYEOF
import json
import sys

context_file = "$context_file"

try:
    with open(context_file, 'r') as f:
        ctx = json.load(f)
    
    lines = []
    lines.append("## PREVIOUS CONTEXT")
    lines.append(f"Issue: {ctx.get('issue_ref', 'unknown')}")
    lines.append(f"Last updated: {ctx.get('updated_at', 'unknown')}")
    lines.append(f"Current branch: {ctx.get('current_branch', 'unknown')}")
    lines.append("")
    lines.append("### Previous work summary:")
    lines.append(ctx.get('last_message', '(no previous message)'))
    lines.append("")
    
    history = ctx.get('conversation_history', [])
    if history:
        lines.append("### Conversation history:")
        for msg in history[-5:]:
            role = msg.get('role', 'unknown')
            content = msg.get('content', '')
            ts = msg.get('timestamp', '')
            lines.append(f"- [{ts}] {role}: {content[:200]}...")
    
    print('\n'.join(lines))
    
except Exception as e:
    print(f"Warning: Failed to load context: {e}", file=sys.stderr)
    print("", file=sys.stderr)
PYEOF
}

kugetsu_context_dump() {
    local issue_ref="$1"
    local message="$2"
    local branch_name="${3:-}"
    
    if [ "$ENABLE_CONTEXT_DUMP" != "true" ]; then
        return
    fi
    
    local context_file=$(issue_ref_to_context_file "$issue_ref")
    mkdir -p "$CONTEXT_DIR"
    
    python3 << PYEOF
import json
import os
from datetime import datetime

context_file = "$context_file"
issue_ref = "$issue_ref"
message = """$message"""
branch_name = "$branch_name"

context = {
    "issue_ref": issue_ref,
    "current_branch": branch_name,
    "updated_at": datetime.now().isoformat() + "Z",
    "last_message": message[:500] if message else "",
    "conversation_history": []
}

if os.path.exists(context_file):
    try:
        with open(context_file, 'r') as f:
            existing = json.load(f)
        
        history = existing.get('conversation_history', [])
        history.append({
            "role": "user",
            "content": message[:1000] if message else "",
            "timestamp": datetime.now().isoformat() + "Z"
        })
        history = history[-20:]
        
        context["conversation_history"] = history
        context["created_at"] = existing.get("created_at", context["updated_at"])
    except:
        context["created_at"] = datetime.now().isoformat() + "Z"
else:
    context["created_at"] = datetime.now().isoformat() + "Z"

with open(context_file, 'w') as f:
    json.dump(context, f, indent=2)
PYEOF
}

kugetsu_context_update_message() {
    local issue_ref="$1"
    local message="$2"
    
    if [ "$ENABLE_CONTEXT_DUMP" != "true" ]; then
        return
    fi
    
    local context_file=$(issue_ref_to_context_file "$issue_ref")
    
    if [ ! -f "$context_file" ]; then
        return
    fi
    
    python3 << PYEOF
import json
from datetime import datetime

context_file = "$context_file"
message = """$message"""

try:
    with open(context_file, 'r') as f:
        ctx = json.load(f)
    
    history = ctx.get('conversation_history', [])
    history.append({
        "role": "assistant",
        "content": message[:1000] if message else "",
        "timestamp": datetime.now().isoformat() + "Z"
    })
    history = history[-20:]
    
    ctx["conversation_history"] = history
    ctx["last_message"] = message[:500] if message else ""
    ctx["updated_at"] = datetime.now().isoformat() + "Z"
    
    with open(context_file, 'w') as f:
        json.dump(ctx, f, indent=2)
except Exception as e:
    pass
PYEOF
}

ensure_queue_dirs() {
    mkdir -p "$QUEUE_ITEMS_DIR"
}

generate_queue_id() {
    echo "q_$(date +%s)_$$_$RANDOM"
}

enqueue_task() {
    local issue_ref="$1"
    local message="$2"
    
    if [ -z "$issue_ref" ] || [ -z "$message" ]; then
        echo "Error: enqueue_task requires <issue-ref> and <message>" >&2
        return 1
    fi
    
    validate_issue_ref "$issue_ref"
    ensure_queue_dirs
    
    local queue_id=$(generate_queue_id)
    local pending_since=$(date -Iseconds)
    
    python3 << PYEOF
import json

queue_item = {
    "id": "$queue_id",
    "issue_ref": "$issue_ref",
    "message": """$message""",
    "state": "pending",
    "pending_since": "$pending_since",
    "notified_at": None,
    "completed_at": None,
    "error": None
}

with open("$QUEUE_ITEMS_DIR/${queue_id}.json", "w") as f:
    json.dump(queue_item, f, indent=2)

print(f"Enqueued: $queue_id")
PYEOF

    kugetsu_add_notification "task_queued" "Task queued: $issue_ref" "$issue_ref"
}

get_pending_tasks() {
    local limit="${1:-10}"
    
    if [ ! -d "$QUEUE_ITEMS_DIR" ]; then
        echo "[]"
        return
    fi
    
    find "$QUEUE_ITEMS_DIR" -name "*.json" -type f 2>/dev/null | while read -r file; do
        local state=$(python3 -c "import json; print(json.load(open('$file')).get('state', ''))" 2>/dev/null || echo "")
        if [ "$state" = "pending" ]; then
            cat "$file"
        fi
    done | head -"$limit"
}

get_queue_stats() {
    local total=0
    local pending=0
    local notified=0
    local completed=0
    local error=0
    
    if [ -d "$QUEUE_ITEMS_DIR" ]; then
        for file in "$QUEUE_ITEMS_DIR"/*.json; do
            [ -f "$file" ] || continue
            total=$((total + 1))
            local state=$(python3 -c "import json; print(json.load(open('$file')).get('state', ''))" 2>/dev/null || echo "")
            case "$state" in
                pending) pending=$((pending + 1)) ;;
                notified) notified=$((notified + 1)) ;;
                completed) completed=$((completed + 1)) ;;
                error) error=$((error + 1)) ;;
            esac
        done
    fi
    
    echo "{\"total\": $total, \"pending\": $pending, \"notified\": $notified, \"completed\": $completed, \"error\": $error}"
}

update_queue_item_state() {
    local queue_id="$1"
    local new_state="$2"
    local session_id="${3:-}"
    local pid="${4:-}"
    
    local item_file="$QUEUE_ITEMS_DIR/${queue_id}.json"
    if [ ! -f "$item_file" ]; then
        echo "Error: Queue item not found: $queue_id" >&2
        return 1
    fi
    
    python3 << PYEOF
import json
import os
from datetime import datetime

item_file = "$item_file"
new_state = "$new_state"
session_id = "$session_id"
pid = "$pid"

with open(item_file, 'r') as f:
    item = json.load(f)

issue_ref = item.get('issue_ref', '')

item['state'] = new_state

if new_state == "notified":
    item['notified_at'] = datetime.now().isoformat() + "Z"
    if session_id:
        item['opencode_session_id'] = session_id
    if pid:
        item['pid'] = int(pid) if pid.isdigit() else None
elif new_state == "completed":
    item['completed_at'] = datetime.now().isoformat() + "Z"
    os.system(f"kugetsu_add_notification 'task_completed' 'Task completed: {issue_ref}' '{issue_ref}'")
elif new_state == "error":
    item['error'] = datetime.now().isoformat() + "Z"
    os.system(f"kugetsu_add_notification 'task_error' 'Task error: {issue_ref}' '{issue_ref}'")

with open(item_file, 'w') as f:
    json.dump(item, f, indent=2)

print(f"Updated $queue_id to state: $new_state")
PYEOF
}

check_task_timeouts() {
    if [ ! -d "$QUEUE_ITEMS_DIR" ]; then
        return
    fi
    
    local timeout_hours="${TASK_TIMEOUT_HOURS:-1}"
    
    for item in "$QUEUE_ITEMS_DIR"/*.json; do
        [ -f "$item" ] || continue
        
        local state=$(python3 -c "import json; print(json.load(open('$item')).get('state', ''))" 2>/dev/null)
        if [ "$state" != "notified" ]; then
            continue
        fi
        
        local notified_at=$(python3 -c "import json; print(json.load(open('$item')).get('notified_at', ''))" 2>/dev/null)
        if [ -z "$notified_at" ]; then
            continue
        fi
        
        local queue_id=$(basename "$item" .json)
        local pid=$(python3 -c "import json; print(json.load(open('$item')).get('pid', ''))" 2>/dev/null)
        local session_id=$(python3 -c "import json; print(json.load(open('$item')).get('opencode_session_id', ''))" 2>/dev/null)
        local issue_ref=$(python3 -c "import json; print(json.load(open('$item')).get('issue_ref', ''))" 2>/dev/null)
        
        local notified_epoch=$(date -d "$notified_at" +%s 2>/dev/null || echo "0")
        local now_epoch=$(date +%s)
        local hours_elapsed=$(( (now_epoch - notified_epoch) / 3600 ))
        
        if [ "$hours_elapsed" -ge "$timeout_hours" ]; then
            echo "Task $queue_id ($issue_ref) timed out after ${hours_elapsed}h"
            
            if [ -n "$session_id" ]; then
                opencode session stop "$session_id" 2>/dev/null || true
            fi
            
            if [ -n "$pid" ] && kill -0 "$pid" 2>/dev/null; then
                kill "$pid" 2>/dev/null || true
            fi
            
            update_queue_item_state "$queue_id" "error"
        fi
    done
}

cmd_queue() {
    local action="${1:-list}"
    shift
    
    case "$action" in
        list)
            local pending_tasks=$(get_pending_tasks 10)
            if [ "$pending_tasks" = "[]" ]; then
                echo "No pending tasks in queue."
            else
                echo "Pending tasks:"
                echo "$pending_tasks" | python3 -c "import sys, json; [print(f\"  {t.get('id')}: {t.get('issue_ref')} - {t.get('message', '')[:50]}...\") for t in json.load(sys.stdin)]"
            fi
            ;;
        stats)
            local stats=$(get_queue_stats)
            echo "Queue statistics:"
            echo "$stats" | python3 -c "import sys, json; d=json.load(sys.stdin); print(f\"  Total: {d.get('total', 0)}\n  Pending: {d.get('pending', 0)}\n  Notified: {d.get('notified', 0)}\n  Completed: {d.get('completed', 0)}\n  Error: {d.get('error', 0)}\")"
            ;;
        clear)
            if [ ! -d "$QUEUE_ITEMS_DIR" ]; then
                echo "Queue is already empty."
                return
            fi
            local count=$(ls -1 "$QUEUE_ITEMS_DIR"/*.json 2>/dev/null | wc -l)
            if [ "$count" -eq 0 ]; then
                echo "Queue is already empty."
                return
            fi
            echo "Clearing $count queue items..."
            rm -f "$QUEUE_ITEMS_DIR"/*.json
            echo "Queue cleared."
            ;;
        enqueue)
            local issue_ref="${1:-}"
            local message="${2:-}"
            if [ -z "$issue_ref" ] || [ -z "$message" ]; then
                echo "Usage: kugetsu queue enqueue <issue-ref> <message>" >&2
                exit 1
            fi
            enqueue_task "$issue_ref" "$message"
            ;;
        check-timeouts)
            check_task_timeouts
            ;;
        *)
            echo "Usage: kugetsu queue [list|stats|clear|enqueue]" >&2
            exit 1
            ;;
    esac
}

cmd_queue_daemon() {
    local action="${1:-status}"
    
    case "$action" in
        start)
            if [ -f "$QUEUE_DAEMON_PID_FILE" ]; then
                local old_pid=$(cat "$QUEUE_DAEMON_PID_FILE")
                if kill -0 "$old_pid" 2>/dev/null; then
                    echo "Queue daemon is already running (PID: $old_pid)"
                    return
                fi
                rm -f "$QUEUE_DAEMON_PID_FILE"
            fi
            
            ensure_queue_dirs
            
            nohup bash "$SCRIPT_DIR/kugetsu-queue-daemon.sh" >> "$QUEUE_DAEMON_LOG_FILE" 2>&1 &
            
            echo $! > "$QUEUE_DAEMON_PID_FILE"
            echo "Queue daemon started (PID: $(cat "$QUEUE_DAEMON_PID_FILE"))"
            ;;
        stop)
            if [ ! -f "$QUEUE_DAEMON_PID_FILE" ]; then
                echo "Queue daemon is not running."
                return
            fi
            local pid=$(cat "$QUEUE_DAEMON_PID_FILE")
            if kill -0 "$pid" 2>/dev/null; then
                kill "$pid"
                rm -f "$QUEUE_DAEMON_PID_FILE"
                echo "Queue daemon stopped."
            else
                echo "Queue daemon is not running (stale PID file)."
                rm -f "$QUEUE_DAEMON_PID_FILE"
            fi
            ;;
        restart)
            cmd_queue_daemon stop
            sleep 1
            cmd_queue_daemon start
            ;;
        status)
            if [ ! -f "$QUEUE_DAEMON_PID_FILE" ]; then
                echo "Queue daemon is not running."
                return
            fi
            local pid=$(cat "$QUEUE_DAEMON_PID_FILE")
            if kill -0 "$pid" 2>/dev/null; then
                echo "Queue daemon is running (PID: $pid)"
            else
                echo "Queue daemon is not running (stale PID file)."
                rm -f "$QUEUE_DAEMON_PID_FILE"
            fi
            ;;
        logs)
            if [ -f "$QUEUE_DAEMON_LOG_FILE" ]; then
                tail -50 "$QUEUE_DAEMON_LOG_FILE"
            else
                echo "No daemon logs found."
            fi
            ;;
        *)
            echo "Usage: kugetsu queue-daemon [start|stop|restart|status|logs]" >&2
            exit 1
            ;;
    esac
}

get_verbosity_context() {
    local issue_ref="$1"
    local context_file="$VERBOSITY_DIR/${issue_ref##*/}.context"
    
    if [ ! -f "$context_file" ]; then
        echo "{}"
        return
    fi
    
    cat "$context_file"
}

get_missing_info() {
    local issue_ref="$1"
    local session_file=$(get_session_for_issue "$issue_ref")
    
    if [ -z "$session_file" ] || [ "$session_file" = "null" ]; then
        echo "Error: No session found for '$issue_ref'" >&2
        return
    fi
    
    local session_path="$SESSIONS_DIR/$session_file"
    
    if [ ! -f "$session_path" ]; then
        echo "Error: Session file not found: $session_path" >&2
        return
    fi
    
    python3 << PYEOF
import json

session_path = "$session_path"

with open(session_path, 'r') as f:
    session = json.load(f)

missing = []

if not session.get('pr_url'):
    missing.append('pr_url')

if not session.get('last_activity'):
    missing.append('last_activity')

if missing:
    print("Missing info:", ', '.join(missing))
else:
    print("Session info complete")
PYEOF
}

set_debug_mode() {
    local filtered_args=()
    local debug_mode=false
    
    for arg in "$@"; do
        case "$arg" in
            --debug)
                debug_mode=true
                ;;
            *)
                filtered_args+=("$arg")
                ;;
        esac
    done
    
    if [ "$debug_mode" = true ]; then
        export KUGETSU_VERBOSITY="debug"
        echo "[DEBUG] Debug mode enabled" >&2
    fi
    
    echo "${filtered_args[@]}"
}

cmd_env() {
    local action="${1:-list}"
    shift
    
    case "$action" in
        list)
            echo "Agent environment variables:"
            if [ -d "$ENV_DIR" ]; then
                for env_file in "$ENV_DIR"/*.env; do
                    if [ -f "$env_file" ]; then
                        echo ""
                        echo "=== $(basename "$env_file") ==="
                        while IFS= read -r line; do
                            echo "  $(mask_sensitive_vars "$line")"
                        done < "$env_file"
                    fi
                done
            else
                echo "  No env files found in $ENV_DIR"
            fi
            ;;
        get)
            local key="${1:-}"
            if [ -z "$key" ]; then
                echo "Usage: kugetsu env get <key>" >&2
                exit 1
            fi
            load_agent_env "default"
            local value="${!key:-}"
            if [ -n "$value" ]; then
                echo "$value"
            else
                echo "Variable '$key' is not set" >&2
                exit 1
            fi
            ;;
        set)
            local key="${1:-}"
            local value="${2:-}"
            if [ -z "$key" ] || [ -z "$value" ]; then
                echo "Usage: kugetsu env set <key> <value>" >&2
                exit 1
            fi
            mkdir -p "$ENV_DIR"
            echo "${key}=${value}" >> "$ENV_DIR/default.env"
            echo "Set $key in $ENV_DIR/default.env"
            ;;
        rm)
            local key="${1:-}"
            if [ -z "$key" ]; then
                echo "Usage: kugetsu env rm <key>" >&2
                exit 1
            fi
            if [ -f "$ENV_DIR/default.env" ]; then
                sed -i "/^${key}=/d" "$ENV_DIR/default.env"
                echo "Removed $key from $ENV_DIR/default.env"
            fi
            ;;
        *)
            echo "Usage: kugetsu env [list|get|set|rm]" >&2
            exit 1
            ;;
    esac
}

cmd_server() {
    local action="${1:-}"
    
    case "$action" in
        ""|"list")
            if [ -z "${GIT_SERVERS+x}" ]; then
                echo "No git servers configured"
                return
            fi
            echo "Git servers:"
            for key in "${!GIT_SERVERS[@]}"; do
                local marker=""
                if [ "$key" = "$DEFAULT_GIT_SERVER" ]; then
                    marker=" (default)"
                fi
                echo "  $key -> ${GIT_SERVERS[$key]}$marker"
            done
            ;;
        add)
            local name="${2:-}"
            local url="${3:-}"
            if [ -z "$name" ] || [ -z "$url" ]; then
                echo "Usage: kugetsu server add <name> <url>" >&2
                exit 1
            fi
            if grep -q "^GIT_SERVERS\[" "$KUGETSU_DIR/config" 2>/dev/null; then
                sed -i "s|^GIT_SERVERS\[\"$name\"\]=.*|GIT_SERVERS[\"$name\"]=\"$url\"|" "$KUGETSU_DIR/config"
                if ! grep -q "GIT_SERVERS\[\"$name\"\]" "$KUGETSU_DIR/config" 2>/dev/null; then
                    sed -i "/^declare -A GIT_SERVERS/a GIT_SERVERS[\"$name\"]=\"$url\"" "$KUGETSU_DIR/config"
                fi
            else
                echo "declare -A GIT_SERVERS" >> "$KUGETSU_DIR/config"
                echo "GIT_SERVERS[\"$name\"]=\"$url\"" >> "$KUGETSU_DIR/config"
            fi
            source "$KUGETSU_DIR/config"
            echo "Added git server: $name -> $url"
            ;;
        remove|rm|delete)
            local name="${2:-}"
            if [ -z "$name" ]; then
                echo "Usage: kugetsu server remove <name>" >&2
                exit 1
            fi
            if [ -n "${GIT_SERVERS[$name]:-}" ]; then
                if [ "$name" = "$DEFAULT_GIT_SERVER" ]; then
                    echo "Error: Cannot remove default server. Set a new default first." >&2
                    exit 1
                fi
                sed -i "/GIT_SERVERS\[\"$name\"\]/d" "$KUGETSU_DIR/config" 2>/dev/null
                source "$KUGETSU_DIR/config"
                echo "Removed git server: $name"
            else
                echo "Error: Server '$name' not found" >&2
                exit 1
            fi
            ;;
        default)
            local name="${2:-}"
            if [ -z "$name" ]; then
                echo "Current default: $DEFAULT_GIT_SERVER"
                return
            fi
            if [ -n "${GIT_SERVERS[$name]:-}" ]; then
                sed -i "s/^DEFAULT_GIT_SERVER=.*/DEFAULT_GIT_SERVER=\"$name\"/" "$KUGETSU_DIR/config"
                source "$KUGETSU_DIR/config"
                echo "Set default git server to: $name"
            else
                echo "Error: Server '$name' not found" >&2
                exit 1
            fi
            ;;
        get)
            local name="${2:-$DEFAULT_GIT_SERVER}"
            if [ -n "${GIT_SERVERS[$name]:-}" ]; then
                echo "${GIT_SERVERS[$name]}"
            else
                echo "Error: Server '$name' not found" >&2
                exit 1
            fi
            ;;
        *)
            echo "Usage: kugetsu server <list|add|remove|default|get>" >&2
            echo "" >&2
            echo "Commands:" >&2
            echo "  list              List all configured git servers" >&2
            echo "  add <name> <url>  Add a new git server" >&2
            echo "  remove <name>     Remove a git server" >&2
            echo "  default [<name>]  Get or set default server" >&2
            echo "  get [<name>]      Get URL for a server (default: current default)" >&2
            exit 1
            ;;
    esac
}

cmd_doctor() {
    local fix=false
    
    while [ $# -gt 0 ]; do
        case "$1" in
            --fix)
                fix=true
                ;;
            *)
                ;;
        esac
        shift
    done
    
    echo "=== kugetsu doctor ==="
    echo ""
    
    echo "Checking directories..."
    for dir in "$KUGETSU_DIR" "$SESSIONS_DIR" "$WORKTREES_DIR"; do
        if [ -d "$dir" ]; then
            echo "  [OK] $dir exists"
        else
            echo "  [MISSING] $dir"
            if [ "$fix" = true ]; then
                mkdir -p "$dir"
                echo "        Created $dir"
            fi
        fi
    done
    
    echo ""
    echo "Checking sessions..."
    local base_id=$(get_base_session_id)
    local pm_id=$(get_pm_agent_session_id)
    
    if [ -n "$base_id" ] && [ "$base_id" != "null" ]; then
        echo "  [OK] Base session: $base_id"
    else
        echo "  [MISSING] Base session not initialized"
    fi
    
    if [ -n "$pm_id" ] && [ "$pm_id" != "null" ]; then
        echo "  [OK] PM agent: $pm_id"
    else
        echo "  [WARNING] PM agent not initialized"
    fi
    
    echo ""
    echo "Checking opencode..."
    if command -v opencode &> /dev/null; then
        echo "  [OK] opencode command available"
        local sessions=$(opencode session list 2>/dev/null | grep -c "^ses_" || echo "0")
        echo "  [OK] $sessions opencode sessions found"
    else
        echo "  [MISSING] opencode command not found"
    fi
    
    echo ""
    echo "Checking index..."
    if [ -f "$INDEX_FILE" ]; then
        echo "  [OK] Index file exists"
    else
        echo "  [WARNING] Index file not found"
    fi
    
    echo ""
    echo "Doctor check complete."
}

mark_orphan() {
    local session_file="$1"
    local session_path="$SESSIONS_DIR/$session_file"
    
    if [ ! -f "$session_path" ]; then
        return
    fi
    
    python3 << PYEOF
import json

session_path = "$session_path"

with open(session_path, 'r') as f:
    session = json.load(f)

session['state'] = 'orphan'
session['orphaned_at'] = '$(date -Iseconds)'

with open(session_path, 'w') as f:
    json.dump(session, f, indent=2)
PYEOF
}

main() {
    if [ $# -eq 0 ]; then
        usage
        exit 1
    fi
    
    local command="$1"
    shift
    
    case "$command" in
        help|--help|-h)
            usage
            ;;
        init)
            cmd_init "$@"
            ;;
        start)
            cmd_start "$@"
            ;;
        continue)
            cmd_continue "$@"
            ;;
        delegate)
            cmd_delegate "$@"
            ;;
        logs)
            cmd_logs "$@"
            ;;
        status)
            cmd_status
            ;;
        doctor)
            cmd_doctor "$@"
            ;;
        notify)
            cmd_notify "$@"
            ;;
        list)
            cmd_list "$@"
            ;;
        prune)
            cmd_prune "$@"
            ;;
        destroy)
            cmd_destroy "$@"
            ;;
        set-pr)
            local issue_ref="${1:-}"
            local pr_url="${2:-}"
            if [ -z "$issue_ref" ] || [ -z "$pr_url" ]; then
                echo "Usage: kugetsu set-pr <issue-ref> <pr-url>" >&2
                echo "Example: kugetsu set-pr github.com/shoko/kugetsu#14 https://github.com/shoko/kugetsu/pulls/123" >&2
                exit 1
            fi
            validate_issue_ref "$issue_ref"
            update_session_pr_url "$issue_ref" "$pr_url"
            ;;
        context)
            local issue_ref="${1:-}"
            if [ -z "$issue_ref" ]; then
                echo "Usage: kugetsu context <issue-ref>" >&2
                echo "Show context for an issue" >&2
                exit 1
            fi
            validate_issue_ref "$issue_ref"
            local context_file=$(issue_ref_to_context_file "$issue_ref")
            if [ -f "$context_file" ]; then
                cat "$context_file"
            else
                echo "No context found for '$issue_ref'" >&2
                exit 1
            fi
            ;;
        queue)
            local action="${1:-list}"
            shift
            cmd_queue "$action" "$@"
            ;;
        queue-daemon)
            local action="${1:-status}"
            shift
            cmd_queue_daemon "$action" "$@"
            ;;
        env)
            cmd_env "$@"
            ;;
        server)
            cmd_server "$@"
            ;;
        *)
            echo "Error: unknown command '$command'" >&2
            usage
            exit 1
            ;;
    esac
}

main "$@"
