from flask import Blueprint, render_template, redirect, url_for, flash, request, jsonify
from flask_login import login_required, current_user
from app.models import Job
from app import db
import json
import subprocess
import os
import requests
import random
import string
import traceback

def generate_remote_id(length=6):
    return ''.join(random.choices(string.digits, k=length))

jobs_bp = Blueprint('jobs', __name__, url_prefix='/jobs')

@jobs_bp.route('/submit')
@login_required
def submit():
    return render_template('jobs/submit.html')

@jobs_bp.route('/debug/test-step2')
@login_required
def debug_test_step2():
    """Debug endpoint to test step2 template with mock data"""
    if not current_user.is_admin:
        return jsonify({'error': 'Admin access required'}), 403
    
    # Mock data similar to what we expect from scenario scan
    organized_data = {
        "drivers": {
            "diag_protocol_stack": ["diag_protocol_stack_init_test"]
        },
        "application_layer": {
            "data_pool": ["data_pool_init_test"],
            "actuator_manager": ["actuator_manager_init_test2", "actuator_manager_init_test"],
            "event_system": ["event_system_init_test"]
        }
    }
    
    scenario_map = {
        "diag_protocol_stack_init_test": "drivers/diag_protocol_stack/test/diag_protocol_stack_init_test.test_scenario.xml",
        "data_pool_init_test": "application_layer/DP_stack/data_pool/test/data_pool_init_test.test_scenario.xml",
        "actuator_manager_init_test2": "application_layer/business_stack/actuator_manager/test/actuator_manager_init_test2.test_scenario.xml",
        "actuator_manager_init_test": "application_layer/business_stack/actuator_manager/test/actuator_manager_init_test.test_scenario.xml",
        "event_system_init_test": "application_layer/business_stack/event_system/test/event_system_init_test.test_scenario.xml"
    }
    
    try:
        return render_template('jobs/submit_step2.html', 
                             branch_name='test_branch', 
                             organized_data=organized_data,
                             scenario_map=scenario_map)
    except Exception as e:
        return jsonify({
            'error': str(e),
            'type': type(e).__name__,
            'template_exists': True
        })

@jobs_bp.route('/debug/ssh-test')
@login_required
def debug_ssh_test():
    """Debug endpoint to test SSH connectivity"""
    if not current_user.is_admin:
        return jsonify({'error': 'Admin access required'}), 403
    
    try:
        ssh_password = os.environ.get('SSH_PASSWORD', 'default_password')
        ssh_host = os.environ.get('SSH_HOST', 'remote_host')
        ssh_user = os.environ.get('SSH_USER', 'asf')
        ssh_port = os.environ.get('SSH_PORT', '22')
        
        # SSH options for better connectivity
        ssh_options = f"-p {ssh_port} -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null"
        
        # Test basic SSH connectivity
        test_cmd = f"sshpass -p '{ssh_password}' ssh {ssh_options} {ssh_user}@{ssh_host} 'echo SSH_CONNECTION_SUCCESS'"
        result = subprocess.run(test_cmd, shell=True, capture_output=True, text=True, timeout=30)
        
        return jsonify({
            'ssh_config': {
                'user': ssh_user,
                'host': ssh_host,
                'port': ssh_port,
                'password_set': bool(ssh_password and ssh_password != 'default_password')
            },
            'command_executed': test_cmd.replace(ssh_password, '***'),
            'test_result': {
                'returncode': result.returncode,
                'stdout': result.stdout,
                'stderr': result.stderr
            },
            'success': result.returncode == 0 and 'SSH_CONNECTION_SUCCESS' in result.stdout
        })
        
    except Exception as e:
        return jsonify({
            'error': str(e),
            'success': False
        })

@jobs_bp.route('/submit/step1', methods=['POST'])
@login_required
def submit_step1():
    branch_name = request.form.get('branch_name')
    
    if not branch_name:
        return jsonify({
            'success': False,
            'error': 'Branch name is required',
            'output': ''
        })
    
    # Validate branch exists on remote
    try:
        # Get SSH configuration from environment variables
        ssh_password = os.environ.get('SSH_PASSWORD', 'default_password')
        ssh_host = os.environ.get('SSH_HOST', 'remote_host')
        ssh_user = os.environ.get('SSH_USER', 'asf')
        ssh_port = os.environ.get('SSH_PORT', '22')
        
        print(f"[DEBUG] Starting branch validation for: {branch_name}")
        print(f"[DEBUG] SSH Config - User: {ssh_user}, Host: {ssh_host}, Port: {ssh_port}")
        
        # SSH options for better connectivity
        ssh_options = f"-p {ssh_port} -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null"
        
        # First, clone the repository
        clone_cmd = f"sshpass -p '{ssh_password}' ssh {ssh_options} {ssh_user}@{ssh_host} './TPF/gitea_repo_controller.sh clone'"
        print(f"[DEBUG] Executing clone command: {clone_cmd.replace(ssh_password, '***')}")
        
        clone_result = subprocess.run(clone_cmd, shell=True, capture_output=True, text=True, timeout=60)
        
        print(f"[DEBUG] Clone result - Return code: {clone_result.returncode}")
        print(f"[DEBUG] Clone stdout: {clone_result.stdout}")
        print(f"[DEBUG] Clone stderr: {clone_result.stderr}")
        
        # Then, checkout the branch
        checkout_cmd = f"sshpass -p '{ssh_password}' ssh {ssh_options} {ssh_user}@{ssh_host} './TPF/gitea_repo_controller.sh checkout {branch_name}'"
        print(f"[DEBUG] Executing checkout command: {checkout_cmd.replace(ssh_password, '***')}")
        
        checkout_result = subprocess.run(checkout_cmd, shell=True, capture_output=True, text=True, timeout=60)
        
        print(f"[DEBUG] Checkout result - Return code: {checkout_result.returncode}")
        print(f"[DEBUG] Checkout stdout: {checkout_result.stdout}")
        print(f"[DEBUG] Checkout stderr: {checkout_result.stderr}")
        
        # Combine all output for analysis
        full_output = f"CLONE OUTPUT:\n{clone_result.stdout}\n{clone_result.stderr}\n\nCHECKOUT OUTPUT:\n{checkout_result.stdout}\n{checkout_result.stderr}"
        
        # Check if checkout was successful
        # Look for "fatal:" in the output which indicates failure
        checkout_failed = (
            "fatal:" in checkout_result.stdout.lower() or 
            "fatal:" in checkout_result.stderr.lower() or
            checkout_result.returncode != 0
        )
        
        print(f"[DEBUG] Checkout failed: {checkout_failed}")
        
        if checkout_failed:
            error_msg = f'Branch "{branch_name}" not found on remote. Please push the branch first.'
            
            # Try to extract more specific error from output
            if "fatal:" in checkout_result.stdout:
                fatal_line = [line for line in checkout_result.stdout.split('\n') if 'fatal:' in line.lower()]
                if fatal_line:
                    error_msg += f" Error: {fatal_line[0].strip()}"
            elif "fatal:" in checkout_result.stderr:
                fatal_line = [line for line in checkout_result.stderr.split('\n') if 'fatal:' in line.lower()]
                if fatal_line:
                    error_msg += f" Error: {fatal_line[0].strip()}"
            
            return jsonify({
                'success': False,
                'error': error_msg,
                'output': full_output,
                'debug': {
                    'clone_returncode': clone_result.returncode,
                    'checkout_returncode': checkout_result.returncode,
                    'branch_name': branch_name
                }
            })
        
        # If successful, run scenario scan to get available scenarios
        print(f"[DEBUG] Running scenario scan...")
        scan_cmd = f"sshpass -p '{ssh_password}' ssh {ssh_options} {ssh_user}@{ssh_host} 'python3 TPF/Sensor_hub_repo/Tools/TPF/scenario_scan.py'"
        print(f"[DEBUG] Executing scan command: {scan_cmd.replace(ssh_password, '***')}")
        
        scan_result = subprocess.run(scan_cmd, shell=True, capture_output=True, text=True, timeout=120)
        
        print(f"[DEBUG] Scan result - Return code: {scan_result.returncode}")
        print(f"[DEBUG] Scan stdout: {scan_result.stdout}")
        print(f"[DEBUG] Scan stderr: {scan_result.stderr}")
        
        # Parse the JSON response from scenario scan
        try:
            scan_data = json.loads(scan_result.stdout)
            organized_data = scan_data.get('organized_data', {})
            scenario_map = scan_data.get('scenario_map', {})
            
            print(f"[DEBUG] Found {len(scenario_map)} scenarios in {len(organized_data)} categories")
            
        except json.JSONDecodeError as e:
            print(f"[ERROR] Failed to parse scenario scan JSON: {e}")
            print(f"[ERROR] Raw output: {scan_result.stdout}")
            # Fallback to mock data if scan fails
            organized_data = {
                "drivers": {
                    "diag_protocol_stack": ["diag_protocol_stack_init_test"]
                },
                "application_layer": {
                    "data_pool": ["data_pool_init_test"],
                    "actuator_manager": ["actuator_manager_init_test2", "actuator_manager_init_test"],
                    "event_system": ["event_system_init_test"]
                }
            }
            scenario_map = {
                "diag_protocol_stack_init_test": "drivers/diag_protocol_stack/test/diag_protocol_stack_init_test.test_scenario.xml",
                "data_pool_init_test": "application_layer/DP_stack/data_pool/test/data_pool_init_test.test_scenario.xml",
                "actuator_manager_init_test2": "application_layer/business_stack/actuator_manager/test/actuator_manager_init_test2.test_scenario.xml",
                "actuator_manager_init_test": "application_layer/business_stack/actuator_manager/test/actuator_manager_init_test.test_scenario.xml",
                "event_system_init_test": "application_layer/business_stack/event_system/test/event_system_init_test.test_scenario.xml"
            }
        
        print(f"[DEBUG] Branch validation successful for: {branch_name}")
        
        return jsonify({
            'success': True,
            'organized_data': organized_data,
            'scenario_map': scenario_map,
            'message': f'Branch "{branch_name}" validated successfully',
            'output': full_output,
            'debug': {
                'clone_returncode': clone_result.returncode,
                'checkout_returncode': checkout_result.returncode,
                'scan_returncode': scan_result.returncode if 'scan_result' in locals() else 'N/A',
                'branch_name': branch_name,
                'scenarios_found': len(scenario_map)
            }
        })
        
    except subprocess.TimeoutExpired:
        error_msg = 'Branch validation timed out. Please try again.'
        print(f"[ERROR] {error_msg}")
        return jsonify({
            'success': False,
            'error': error_msg,
            'output': 'Command timed out after 60 seconds'
        })
    except Exception as e:
        error_msg = f'Error validating branch: {str(e)}'
        print(f"[ERROR] {error_msg}")
        return jsonify({
            'success': False,
            'error': error_msg,
            'output': f'Exception: {str(e)}'
        })

@jobs_bp.route('/submit/step2', methods=['POST'])
@login_required
def submit_step2():
    branch_name = request.form.get('branch_name')
    scenario_map_json = request.form.get('scenario_map')
    selected_scenarios_json = request.form.get('selected_scenarios')
    
    try:
        scenario_map = json.loads(scenario_map_json) if scenario_map_json else {}
        selected_scenarios = json.loads(selected_scenarios_json) if selected_scenarios_json else []
    except json.JSONDecodeError as e:
        print(f"[ERROR] JSON Decode Error in submit_step2: {e}")
        print(f"[DEBUG] scenario_map_json: {scenario_map_json}")
        print(f"[DEBUG] selected_scenarios_json: {selected_scenarios_json}")
        flash('Invalid scenario data', 'error')
        return redirect(url_for('jobs.submit'))
    
    if not selected_scenarios:
        flash('Please select at least one scenario', 'error')
        return redirect(url_for('jobs.submit'))
    
    return render_template('jobs/submit_review.html', 
                         branch_name=branch_name, 
                         scenarios=selected_scenarios,
                         scenario_map=scenario_map)

@jobs_bp.route('/submit/step2-validated', methods=['POST'])
@login_required
def submit_step2_validated():
    try:
        branch_name = request.form.get('branch_name')
        organized_data_json = request.form.get('organized_data')
        scenario_map_json = request.form.get('scenario_map')
        
        print(f"[DEBUG] Step2 - Branch: {branch_name}")
        print(f"[DEBUG] Step2 - Organized data length: {len(organized_data_json) if organized_data_json else 0}")
        print(f"[DEBUG] Step2 - Scenario map length: {len(scenario_map_json) if scenario_map_json else 0}")
        
        if not branch_name:
            print("[ERROR] Step2 - No branch name provided")
            flash('Branch name is required', 'error')
            return redirect(url_for('jobs.submit'))
        
        try:
            organized_data = json.loads(organized_data_json) if organized_data_json else {}
            scenario_map = json.loads(scenario_map_json) if scenario_map_json else {}
            
            print(f"[DEBUG] Step2 - Parsed organized_data keys: {list(organized_data.keys())}")
            print(f"[DEBUG] Step2 - Parsed scenario_map count: {len(scenario_map)}")
            
        except json.JSONDecodeError as e:
            print(f"[ERROR] Step2 - JSON decode error: {e}")
            print(f"[DEBUG] organized_data_json: {organized_data_json}")
            print(f"[DEBUG] scenario_map_json: {scenario_map_json}")
            flash('Invalid scenario data', 'error')
            return redirect(url_for('jobs.submit'))
        
        print(f"[DEBUG] Step2 - Rendering template with {len(organized_data)} layers")
        
        return render_template('jobs/submit_step2.html', 
                             branch_name=branch_name, 
                             organized_data=organized_data,
                             scenario_map=scenario_map)
    
    except Exception as e:
        print(f"[ERROR] Step2 - Unexpected error: {str(e)}")
        print(f"[ERROR] Step2 - Error type: {type(e).__name__}")
        import traceback
        print(f"[ERROR] Step2 - Traceback: {traceback.format_exc()}")
        flash(f'Error loading scenario selection: {str(e)}', 'error')
        return redirect(url_for('jobs.submit'))
@jobs_bp.route('/submit/final', methods=['POST'])
@login_required
def submit_final():
    branch_name = request.form.get('branch_name')
    scenarios_json = request.form.get('scenarios')
    scenario_map_json = request.form.get('scenario_map')
    environment = request.form.get('environment', 'staging')
    test_mode = request.form.get('test_mode', 'simulator')
    
    try:
        scenarios = json.loads(scenarios_json) if scenarios_json else []
        scenario_map = json.loads(scenario_map_json) if scenario_map_json else {}
    except json.JSONDecodeError as e:
        print(f"[ERROR] JSON Decode Error in submit_final: {e}")
        flash('Invalid scenario data', 'error')
        return redirect(url_for('jobs.submit'))
    
    # Create Job record first to get the ID
    job = Job(
        user_id=current_user.id,
        branch_name=branch_name,
        scenarios=json.dumps(scenarios),
        environment=environment,
        test_mode=test_mode,
        status='waiting'
    )
    db.session.add(job)
    db.session.commit()

    # Use Job ID as Remote Queue ID
    remote_queue_id = str(job.id)
    remote_task_ids = {s: f"{job.id}_{i+1}" for i, s in enumerate(scenarios)}
    
    # Update job with remote IDs
    job.remote_queue_id = remote_queue_id
    job.remote_task_ids = json.dumps(remote_task_ids)
    db.session.commit()
    
    # Prepare Remote Payload
    # Format: {"source": "branch", "345": ["staging", {"task1": "path"}]}
    payload = {
        "source": branch_name,
        remote_queue_id: [
            environment,
            {remote_task_ids[s]: scenario_map.get(s, s) for s in scenarios}
        ]
    }
    
    # Trigger Remote Queue
    try:
        remote_url = "http://asf-server.duckdns.org:8080/api/queue"
        response = requests.post(remote_url, json=payload, timeout=10)
        response.raise_for_status()
        print(f"[DEBUG] Remote queue triggered: {response.json()}")
    except Exception as e:
        print(f"[ERROR] Failed to trigger remote queue: {e}")
        flash(f'Warning: Job saved but failed to trigger remote queue: {str(e)}', 'warning')
    
    flash('Test job submitted successfully', 'success')
    return redirect(url_for('dashboard.index'))

@jobs_bp.route('/<int:job_id>')
@login_required
def view_job(job_id):
    job = Job.query.get_or_404(job_id)
    
    if not current_user.is_admin and job.user_id != current_user.id:
        flash('Access denied', 'error')
        return redirect(url_for('dashboard.index'))
    
    return jsonify({
        'id': job.id,
        'submitter': job.submitter.username,
        'branch_name': job.branch_name,
        'scenarios': job.scenarios,
        'environment': job.environment,
        'test_mode': job.test_mode,
        'status': job.status,
        'submitted_at': job.submitted_at.strftime('%Y-%m-%d %H:%M:%S'),
        'completed_at': job.completed_at.strftime('%Y-%m-%d %H:%M:%S') if job.completed_at else None,
        'duration': job.duration,
        'remote_queue_id': job.remote_queue_id,
        'remote_task_ids': job.remote_task_ids,
        'remote_results': job.remote_results,
        'queue_log': job.queue_log
    })

@jobs_bp.route('/<int:job_id>/abort', methods=['POST'])
@login_required
def abort_job(job_id):
    job = Job.query.get_or_404(job_id)
    
    if not current_user.is_admin and job.user_id != current_user.id:
        return jsonify({'error': 'Access denied'}), 403
    
    try:
        remote_url = f"http://asf-server.duckdns.org:8080/api/abort/{job.remote_queue_id}"
        response = requests.post(remote_url, timeout=10)
        response.raise_for_status()
        
        job.status = 'aborted'
        db.session.commit()
        return jsonify({'success': True, 'message': 'Job aborted successfully'})
    except Exception as e:
        print(f"[ERROR] Failed to abort remote job: {e}")
        return jsonify({'error': f'Failed to abort remote job: {str(e)}'}), 500

@jobs_bp.route('/<int:job_id>/delete', methods=['POST', 'DELETE'])
@login_required
def delete_job(job_id):
    job = Job.query.get_or_404(job_id)
    
    if not current_user.is_admin and job.user_id != current_user.id:
        return jsonify({'error': 'Access denied'}), 403
    
    try:
        # 1. Try to delete from remote
        remote_url = f"http://asf-server.duckdns.org:8080/api/delete/{job.remote_queue_id}"
        try:
            response = requests.delete(remote_url, timeout=10)
            # We don't necessarily fail if remote delete fails (e.g. already gone)
            print(f"[DEBUG] Remote delete response: {response.status_code}")
        except Exception as re:
            print(f"[WARNING] Remote delete failed: {re}")
            
        # 2. Delete from local DB
        db.session.delete(job)
        db.session.commit()
        
        return jsonify({'success': True, 'message': 'Job deleted successfully'})
    except Exception as e:
        print(f"[ERROR] Failed to delete job: {e}")
        return jsonify({'error': f'Failed to delete job: {str(e)}'}), 500

def update_job_status_internal(job):
    """Internal function to poll remote status and update local job record."""
    if job.status in ['passed', 'failed', 'aborted']:
        return
        
    try:
        # 1. Check Queue Status
        status_url = f"http://asf-server.duckdns.org:8080/api/status/{job.remote_queue_id}"
        q_resp = requests.get(status_url, timeout=5)
        if q_resp.status_code == 200:
            q_data = q_resp.json()
            remote_status = q_data.get('status', '').lower()
            
            if remote_status == 'running':
                job.status = 'in_progress'
            elif remote_status == 'waiting':
                job.status = 'waiting'
            elif remote_status == 'aborted':
                job.status = 'aborted'
            
            # 2. Fetch Queue Logs if running or finished
            if remote_status in ['running', 'finished', 'aborted']:
                log_url = f"http://asf-server.duckdns.org:8080/results/{job.remote_queue_id}/queue_log.txt"
                l_resp = requests.get(log_url, timeout=5)
                if l_resp.status_code == 200:
                    job.queue_log = l_resp.text

        # 3. Check Task Statuses and Results
        task_ids = json.loads(job.remote_task_ids) if job.remote_task_ids else {}
        results = json.loads(job.remote_results) if job.remote_results else {}
        
        all_finished = True
        any_failed = False
        
        if not task_ids:
            all_finished = False # Should not happen if job is valid
            
        for scenario, task_id in task_ids.items():
            # If we don't have result yet, check it
            if scenario not in results:
                # Check task status
                t_status_url = f"http://asf-server.duckdns.org:8080/api/status/{task_id}"
                t_resp = requests.get(t_status_url, timeout=2)
                if t_resp.status_code == 200:
                    t_data = t_resp.json()
                    if t_data.get('status') == 'Finished':
                        # Fetch results
                        res_url = f"http://asf-server.duckdns.org:8080/results/{job.remote_queue_id}/{task_id}/final_summary.json"
                        r_resp = requests.get(res_url, timeout=2)
                        if r_resp.status_code == 200:
                            r_data = r_resp.json()
                            for key, val in r_data.items():
                                if key.upper() == scenario.upper():
                                    # Transform file:/// link to web link
                                    if isinstance(val, list) and len(val) > 1 and val[1].startswith('file:///'):
                                        val[1] = val[1].replace('file:///home/asf/testarena/', 'http://asf-server.duckdns.org:8080/results/')
                                    
                                    results[scenario] = val
                                    if val[0] == 'FAIL':
                                        any_failed = True
                                    break
                        else:
                            all_finished = False
                    elif t_data.get('status') == 'Aborted':
                        results[scenario] = ['ABORTED', '#']
                        all_finished = True
                    elif t_data.get('status') == 'Error':
                        results[scenario] = ['ERROR', '#']
                        any_failed = True
                        all_finished = True
                    else:
                        all_finished = False
                else:
                    all_finished = False
            else:
                if results[scenario][0] in ['FAIL', 'ERROR']:
                    any_failed = True
        
        if all_finished and task_ids:
            # If any task has ERROR, the job status could be 'error' or 'failed'
            # User said "mark it in the dash board as error"
            has_error = any(r[0] == 'ERROR' for r in results.values())
            if has_error:
                job.status = 'error'
            else:
                job.status = 'failed' if any_failed else 'passed'
            from app import db
            job.completed_at = db.session.query(db.func.now()).scalar()
        
        job.remote_results = json.dumps(results)
        from app import db
        db.session.commit()
        
    except Exception as e:
        print(f"[ERROR] Status polling failed for job {job.id}: {e}")

@jobs_bp.route('/<int:job_id>/status')
@login_required
def get_job_status(job_id):
    job = Job.query.get_or_404(job_id)
    update_job_status_internal(job)
    
    return jsonify({
        'status': job.status,
        'status_icon': job.get_status_icon(),
        'remote_results': job.remote_results,
        'queue_log': job.queue_log
    })