#!/usr/bin/env python3
"""
Daily Briefing Engine (Reusable)
Collects sub-agent data, composes a markdown briefing, and posts to wiki.
Called by person-specific wrappers (eric_briefing.py, angela_briefing.py, etc.)
with a config dict specifying location, wiki parent, and agent ID.
"""

import sys
from datetime import datetime
from shared import (
    MT, DASHBOARD_API, WIKI_API, WIKI_COLLECTION_ID as DEFAULT_WIKI_COLLECTION, MONTH_NAMES,
    api_request, log_run, wiki_headers, find_child_doc, ensure_child_doc,
)


def collect_sections(config):
    """Run each sub-agent and collect markdown sections.

    Returns a list of (section_name, markdown, summary) tuples.
    Failed sub-agents are logged but don't stop the briefing.
    """
    sections = []
    location = config.get("location")

    # --- Weather ---
    try:
        from weather_agent import run as weather_run
        md, summary = weather_run(location=location)
        sections.append(("Weather", md, summary))
        print(f"  Weather: {summary}")
    except Exception as e:
        print(f"  Weather failed: {e}", file=sys.stderr)
        sections.append(("Weather", "## Weather\n\n*Weather data unavailable.*\n", f"error: {e}"))

    # --- Calendar ---
    calendars = config.get("calendars", [])
    try:
        from calendar_agent import run as calendar_run
        md, summary = calendar_run(calendars_config=calendars)
        sections.append(("Calendar", md, summary))
        print(f"  Calendar: {summary}")
    except Exception as e:
        print(f"  Calendar failed: {e}", file=sys.stderr)
        sections.append(("Calendar", "## Calendar\n\n*Calendar data unavailable.*\n", f"error: {e}"))

    # --- Reminders (CalDAV VTODO) ---
    reminder_sources = config.get("reminder_sources", [])
    reminder_mode = config.get("reminder_mode", "due_today_3days")
    if reminder_sources:
        try:
            from reminders_agent import run as reminders_run
            md, summary = reminders_run(reminders_config=reminder_sources, mode=reminder_mode)
            sections.append(("Reminders", md, summary))
            print(f"  Reminders: {summary}")
        except Exception as e:
            print(f"  Reminders failed: {e}", file=sys.stderr)
            sections.append(("Reminders", "## Reminders\n\n*Unavailable.*\n", f"error: {e}"))

    # --- Notes (via Mac bridge) ---
    notes_config = config.get("notes", {})
    if notes_config.get("enabled", False):
        try:
            from notes_agent import run as notes_run
            md, summary = notes_run(config=notes_config)
            sections.append(("Notes", md, summary))
            print(f"  Notes: {summary}")
        except Exception as e:
            print(f"  Notes failed: {e}", file=sys.stderr)
            sections.append(("Notes", "## Recent Notes\n\n*Unavailable.*\n", f"error: {e}"))

    # --- Reading List (via Mac bridge) ---
    reading_config = config.get("reading_list", {})
    if reading_config.get("enabled", False):
        try:
            from reading_list_agent import run as reading_list_run
            md, summary = reading_list_run(config=reading_config)
            sections.append(("Reading List", md, summary))
            print(f"  Reading List: {summary}")
        except Exception as e:
            print(f"  Reading List failed: {e}", file=sys.stderr)
            sections.append(("Reading List", "## Reading List\n\n*Unavailable.*\n", f"error: {e}"))

    # --- Project Monitors (LLM-powered) ---
    instance_id = config.get("instance_id", 0)
    user_id = config.get("user_id", 0)
    if user_id:
        try:
            # Fetch this user's project-monitor instances that are set to include in briefing
            pm_instances = api_request(
                f"{DASHBOARD_API}/api/instances/by-user/{user_id}?catalog_id=project-monitor",
                retries=1,
            )
            project_sections = []
            for pm in pm_instances:
                pm_config = pm.get("config", {})
                if str(pm_config.get("include_in_briefing", "false")).lower() != "true":
                    continue
                try:
                    from project_monitor import run as pm_run
                    md, summary = pm_run(pm_config, user_id=user_id, instance_id=pm.get("id"))
                    project_sections.append(md)
                    print(f"  Project [{pm_config.get('project_name', '?')}]: {summary[:80]}")
                except Exception as e:
                    print(f"  Project [{pm_config.get('project_name', '?')}] failed: {e}", file=sys.stderr)

            if project_sections:
                combined = "## Projects\n\n" + "\n\n".join(project_sections)
                sections.append(("Projects", combined, f"{len(project_sections)} project(s)"))
        except Exception as e:
            print(f"  Project monitors skipped: {e}", file=sys.stderr)

    return sections


def compose_briefing(config, sections):
    """Compose the full daily briefing markdown from sub-agent sections."""
    now = datetime.now(MT)
    date_str = now.strftime("%A, %B %d, %Y")
    person = config.get("person", "")
    location = config.get("location", {})
    loc_label = location.get("name", "")
    if location.get("state"):
        loc_label += f", {location['state']}"

    md = f"# {person}'s Daily Briefing\n"
    md += f"**{date_str}** | {loc_label}\n\n"
    md += "---\n\n"

    for _name, section_md, _summary in sections:
        md += section_md + "\n\n"

    md += "---\n"
    md += f"*Generated at {now.strftime('%I:%M %p MT')} by {person}'s Daily Briefing Agent*\n"

    return md


def post_to_wiki(config, markdown, date_str):
    """Post the briefing to wiki under Year/Month hierarchy."""
    wiki_collection = config.get("wiki_collection_id", DEFAULT_WIKI_COLLECTION)
    wiki_parent_id = config["wiki_parent_doc_id"]
    now = datetime.now(MT)
    year_str = str(now.year)
    month_str = MONTH_NAMES[now.month]

    year_id = ensure_child_doc(
        wiki_parent_id, year_str,
        f"Daily briefings for {year_str}.",
        collection_id=wiki_collection,
    )
    month_id = ensure_child_doc(
        year_id, month_str,
        f"Daily briefings for {month_str} {year_str}.",
        collection_id=wiki_collection,
    )

    title = f"Daily Briefing — {date_str}"
    doc_id = find_child_doc(month_id, title, collection_id=wiki_collection)

    if doc_id:
        api_request(
            f"{WIKI_API}/documents.update",
            data={"id": doc_id, "text": markdown, "publish": True},
            headers=wiki_headers(),
            method="POST",
        )
        return doc_id, "updated"
    else:
        result = api_request(
            f"{WIKI_API}/documents.create",
            data={
                "title": title,
                "text": markdown,
                "collectionId": wiki_collection,
                "parentDocumentId": month_id,
                "publish": True,
            },
            headers=wiki_headers(),
            method="POST",
        )
        return result["data"]["id"], "created"


def run(config):
    """Run the full daily briefing pipeline for a given config.

    Config keys:
        person (str): Person's name (e.g., "Eric")
        agent_id (str): Dashboard agent ID (e.g., "eric-daily-briefing")
        wiki_parent_doc_id (str): Outline doc ID for this person's briefing root
        location (dict): {name, state, country, lat, lon}
    """
    agent_id = config["agent_id"]
    instance_id = config.get("instance_id", 0)

    # Fetch live config from dashboard API, merge over defaults
    if instance_id:
        try:
            live_config = api_request(f"{DASHBOARD_API}/api/instances/{instance_id}/config")
            if live_config.get("location"):
                config["location"] = live_config["location"]
                print(f"Using live config location: {config['location'].get('name', '?')}")
            if live_config.get("calendars"):
                config["calendars"] = live_config["calendars"]
        except Exception as e:
            print(f"Could not fetch live config, using defaults: {e}")

    try:
        print(f"Collecting sub-agent data for {config['person']}...")
        sections = collect_sections(config)

        print("Composing briefing...")
        markdown = compose_briefing(config, sections)
        date_str = datetime.now(MT).strftime("%Y-%m-%d")

        print("Posting to wiki...")
        doc_id, action = post_to_wiki(config, markdown, date_str)
        print(f"Wiki doc {action}: {doc_id}")

        summaries = "; ".join(f"{name}: {s}" for name, _, s in sections)
        output = f"Briefing {action}. {summaries}"
        log_run(agent_id, "success", output=output, instance_id=instance_id, metadata={
            "wiki_doc_id": doc_id,
            "action": action,
            "sub_agents": [name for name, _, _ in sections],
        })
        print(f"Done: {output}")

    except Exception as e:
        err_msg = f"{type(e).__name__}: {e}"
        print(f"Error: {err_msg}", file=sys.stderr)
        log_run(agent_id, "failed", err=err_msg, instance_id=instance_id)
        sys.exit(1)