import boto3
import json
import time
import zipfile
from io import BytesIO
import uuid
import pprint
import logging
from PIL import Image 
import os
import base64
import re
import requests 
#import utilities.re_ranker as re_ranker
import utilities.invoke_models as invoke_models
import streamlit as st
import time as t
import botocore.exceptions
from datetime import datetime, timezone
import botocore
import utilities.ubi_lambda as ubi

if "inputs_" not in st.session_state:
    st.session_state.inputs_ = {}

parent_dirname = "/".join((os.path.dirname(__file__)).split("/")[0:-1])
region = 'us-east-1'
# setting logger
logging.basicConfig(format='[%(asctime)s] p%(process)s {%(filename)s:%(lineno)d} %(levelname)s - %(message)s', level=logging.INFO)
logger = logging.getLogger(__name__)
# getting boto3 clients for required AWS services

#bedrock_agent_client = boto3.client('bedrock-agent',region_name=region)
bedrock_agent_runtime_client = boto3.client(
    'bedrock-agent-runtime',
    aws_access_key_id=st.secrets['user_access_key_us_west_2'],
    aws_secret_access_key=st.secrets['user_secret_key_us_west_2'], region_name = 'us-west-2'
)
enable_trace:bool = True
end_session:bool = False

def now_rfc3339():
    return datetime.now(timezone.utc).isoformat()

def send_otel_span(span):
    try:

        query_payload = {
        "client_id": session_id,
        "query_id": st.session_state["query_id"],
        "application": "Semantic Search",
        "query_response_hit_ids": doc_ids,
        "timestamp": datetime.utcnow().isoformat() + "Z",
        "user_query": json.dumps(hybrid_payload),
        "query": query,
        
        }

        status = ubi.send_to_lambda(".otel-v1-apm-span-default", span)

        if status == 202:
            print("Traces sent to Lambda")
        else:
            print("Lambda did not accept the request")

        res = requests.post(OPENSEARCH_ENDPOINT, json=span, auth=OPENSEARCH_AUTH, timeout=3)
        print(f"[OTEL SPAN] {span['name']} -> {res.status_code}")
    except Exception as e:
        print(f"[OTEL ERROR] {e}")

def convert_to_span(block, trace_id, index):
    span_id = str(uuid.uuid4()).replace("-", "")[:16]
    name = "step"
    attributes = {}

    if "invocationInput" in block:
        name = block["invocationInput"].get("function", "invocation")
        attributes = {p["name"]: p["value"] for p in block["invocationInput"].get("parameters", [])}
    elif "observation" in block:
        name = block["observation"].get("type", "observation").lower()
        attributes = block["observation"].get("actionGroupInvocationOutput", {})
    elif "thinking" in block:
        name = "thinking"
        attributes["message"] = block["thinking"].get("content", "")
    elif "rationale" in block:
        name = "rationale"
        attributes["message"] = block["rationale"]

    return {
        "traceId": trace_id,
        "spanId": span_id,
        "name": name,
        "startTime": now_rfc3339(),
        "endTime": now_rfc3339(),
        "durationInNanos": 10000000 * (index + 1),
        "kind": "INTERNAL",
        "status": {"code": "OK"},
        "attributes": attributes,
        "resource": {
            "service.name": "bedrock-agent"
        }
    }

def delete_memory():
    response = bedrock_agent_runtime_client.delete_agent_memory(
    agentAliasId='DEEEEZM2TM',
    agentId='EJVGQW1BH7'
    )
    
def query_(inputs):
    # invoke the agent API
    agentResponse = bedrock_agent_runtime_client.invoke_agent(
        inputText=inputs['shopping_query'],
        agentId='EJVGQW1BH7',
        agentAliasId='DEEEEZM2TM', 
        sessionId=st.session_state.session_id_,
        enableTrace=enable_trace, 
        endSession= end_session
    )

    logger.info(pprint.pprint(agentResponse))
    #print("***agent*****response*********")
    #print(agentResponse)
    event_stream = agentResponse['completion']
    total_context = []
    last_tool = ""
    last_tool_name = ""
    agent_answer = ""
    trace_id = str(uuid.uuid4()).replace("-", "")
    try:
        for event in event_stream:
            if 'trace' in event: 
               
                if('orchestrationTrace' not in event['trace']['trace']):
                    continue
                orchestration_trace = event['trace']['trace']['orchestrationTrace']
                total_context_item = {}
                if('modelInvocationOutput' in orchestration_trace and '<tool_name>' in orchestration_trace['modelInvocationOutput']['rawResponse']['content']):
                    total_context_item['tool'] = orchestration_trace['modelInvocationOutput']['rawResponse']
                if('rationale' in orchestration_trace):
                    total_context_item['rationale'] = orchestration_trace['rationale']['text']
                if('invocationInput' in orchestration_trace):
                    total_context_item['invocationInput'] = orchestration_trace['invocationInput']['actionGroupInvocationInput']
                    last_tool_name = total_context_item['invocationInput']['function']
                if('observation'  in orchestration_trace):
                    total_context_item['observation'] = event['trace']['trace']['orchestrationTrace']['observation']
                    tool_output_last_obs = event['trace']['trace']['orchestrationTrace']['observation']
                    if(tool_output_last_obs['type'] == 'ACTION_GROUP'):
                        last_tool = tool_output_last_obs['actionGroupInvocationOutput']['text']
                    if(tool_output_last_obs['type'] == 'FINISH'):   
                        agent_answer = tool_output_last_obs['finalResponse']['text']
                if('modelInvocationOutput' in orchestration_trace and '<thinking>' in orchestration_trace['modelInvocationOutput']['rawResponse']['content']):
                    total_context_item['thinking'] = orchestration_trace['modelInvocationOutput']['rawResponse']
                if(total_context_item!={}):
                    total_context.append(total_context_item)


                    # 🔁 Generate + send OpenTelemetry span for each block
                    span = convert_to_span(total_context_item, trace_id, i)
                    send_otel_span(span)
   
    except botocore.exceptions.EventStreamError as error:
        raise error
        
    return {'text':agent_answer,'source':total_context,'last_tool':{'name':last_tool_name,'response':last_tool}}