"""
Response formatters for bot commands.
Formats API responses into user-friendly Telegram messages.
"""

from typing import Dict, List, Any


def format_dashboard_response(data: Dict[str, Any], company_name: str = None) -> str:
    """
    Format dashboard data for Telegram (content only, no header).

    Note: company_name parameter kept for backwards compatibility but not used.
    Use format_response_with_company() in handlers to add company header.
    """
    text = ""

    # Sold total trezorerie (casa + banca) - rotunjit la leu
    treasury_totals = data.get('treasury_totals_by_currency', {})
    sold_trezorerie = round(float(treasury_totals.get('RON', 0)))
    text += f"**Sold Trezorerie:** {sold_trezorerie:,}\n\n"

    # Sold Clienți - rotunjit la leu
    clienti_sold = round(float(data.get('clienti_sold_total', 0)))
    clienti_in_termen = round(float(data.get('clienti_sold_in_termen', 0)))
    clienti_restant = round(float(data.get('clienti_sold_restant', 0)))

    text += f"**Sold Clienți:** {clienti_sold:,}\n"
    text += f"  - În termen: {clienti_in_termen:,}\n"
    text += f"  - Restanță: {clienti_restant:,}\n\n"

    # Sold Furnizori BRUT (pentru consistență cu detaliile) - rotunjit la leu
    furnizori_in_termen = round(float(data.get('furnizori_sold_in_termen', 0)))
    furnizori_restant = round(float(data.get('furnizori_sold_restant', 0)))
    furnizori_sold_brut = furnizori_in_termen + furnizori_restant
    furnizori_avansuri = round(float(data.get('furnizori_avansuri', 0)))
    furnizori_sold_net = round(float(data.get('furnizori_sold_total', 0)))

    text += f"**Sold Furnizori:** {furnizori_sold_brut:,}\n"
    text += f"  - În termen: {furnizori_in_termen:,}\n"
    text += f"  - Restanță: {furnizori_restant:,}\n"
    if furnizori_avansuri != 0:
        text += f"  - Avansuri: {furnizori_avansuri:,}\n"
        text += f"  - Net (după avansuri): {furnizori_sold_net:,}"
    else:
        text += f"  - Net: {furnizori_sold_net:,}"

    # Datorii la Buget - două secțiuni: luna precedentă și luna curentă
    budget_breakdown = data.get('budget_debt_breakdown', [])
    if budget_breakdown:
        grupe_prec = [g for g in budget_breakdown if round(float(g.get('datorat', g.get('precedent', 0)))) > 0]
        grupe_crt  = [g for g in budget_breakdown if round(float(g.get('curent', 0))) > 0]

        if grupe_prec or grupe_crt:
            text += "\n\n**Datorii la Buget:**\n"

        if grupe_prec:
            total_sold = sum(round(float(g.get('sold', 0))) for g in grupe_prec)
            total_dat  = sum(round(float(g.get('datorat', g.get('precedent', 0)))) for g in grupe_prec)
            sold_total_str = f"{total_sold:,}" if total_sold > 0 else "0 \u2713"
            text += f"\n  _Precedent: dat: {total_dat:,}, sold: {sold_total_str}_\n"
            for g in grupe_prec:
                datorat = round(float(g.get('datorat', g.get('precedent', 0))))
                sold    = round(float(g.get('sold', 0)))
                label   = g.get('label', '')
                sold_str = f"{sold:,}" if sold > 0 else "0 \u2713"
                text += f"  {label:<6} {datorat:,} · {sold_str}\n"

        if grupe_crt:
            items = [f"{g.get('label', '')} {round(float(g.get('curent', 0))):,}" for g in grupe_crt]
            total_crt = sum(round(float(g.get('curent', 0))) for g in grupe_crt)
            text += f"\n  _Curent: {' \u00b7 '.join(items)} = {total_crt:,}_\n"

    return text


def format_invoices_response(
    invoices: List[Dict[str, Any]],
    company_name: str = None,
    limit: int = 10
) -> str:
    """
    Format invoices list for Telegram - COMPACT TABLE FORMAT.

    Args:
        invoices: List of invoice dicts
        company_name: Company name (kept for compatibility, not used)
        limit: Maximum number of invoices to display

    Returns:
        Formatted Markdown string for Telegram (compact, no emojis)
    """
    if not invoices:
        return "Nu s-au gasit facturi cu aceste criterii."

    # Header (o singură dată)
    text = f"**Facturi** ({len(invoices)} total)\n\n"
    text += "Nr | Client | Suma | Status\n"
    text += "---|--------|------|-------\n"

    # Lista facturi - compact, o linie per factură
    for idx, inv in enumerate(invoices[:limit], 1):
        seria = inv.get('seria', '')
        numar = inv.get('numar', '')
        client = inv.get('client', 'N/A')
        suma = inv.get('suma_totala', 0)
        status = inv.get('status', 'N/A')

        # Truncate long client names for compact display
        client_short = client[:20] + "..." if len(client) > 20 else client

        # Status marker (no emoji)
        status_marker = "PLATIT" if status == "platit" else "NEPLATIT"

        text += f"{seria}{numar} | {client_short} | {suma:,.0f} | {status_marker}\n"

    if len(invoices) > limit:
        text += f"\n+{len(invoices) - limit} facturi"

    return text


# =========================================================================
# FAZA 2: New Formatter Functions for Button Interface
# =========================================================================


def format_treasury_casa_response(data: Dict[str, Any], company_name: str = None) -> str:
    """
    Format treasury CASH data for Telegram (content only, no header).

    Args:
        data: Dict with casa accounts and total from treasury breakdown
        company_name: Company name (kept for compatibility, not used)

    Returns:
        Formatted Markdown string for Telegram

    Example:
        data = {'accounts': [...], 'total': 5000}
        text = format_treasury_casa_response(data)
    """
    text = ""

    # Total cash balance - rotunjit la leu (0 zecimale)
    total_cash = round(data.get('total', 0))
    text += f"**Sold Total Cash:** {total_cash:,} RON\n\n"

    # Cash accounts
    casa_accounts = data.get('accounts', [])
    if casa_accounts:
        text += "**Conturi de Casa:**\n"
        for acc in casa_accounts:  # Show all accounts
            name = acc.get('name', 'N/A')
            balance = round(acc.get('balance', 0))
            text += f"  - {name}: {balance:,} RON\n"
    else:
        text += "Nu exista conturi de casa configurate."

    return text


def format_treasury_banca_response(data: Dict[str, Any], company_name: str = None) -> str:
    """
    Format treasury BANK data for Telegram (content only, no header).

    Args:
        data: Dict with banca accounts and total from treasury breakdown
        company_name: Company name (kept for compatibility, not used)

    Returns:
        Formatted Markdown string for Telegram

    Example:
        data = {'accounts': [...], 'total': 15000}
        text = format_treasury_banca_response(data)
    """
    text = ""

    # Total bank balance - rotunjit la leu (0 zecimale)
    total_bank = round(data.get('total', 0))
    text += f"**Sold Total Banca:** {total_bank:,} RON\n\n"

    # Bank accounts
    bank_accounts = data.get('accounts', [])
    if bank_accounts:
        text += "**Conturi Bancare:**\n"
        for acc in bank_accounts:  # Show all accounts
            name = acc.get('name', 'N/A')
            balance = round(acc.get('balance', 0))
            text += f"  - {name}: {balance:,} RON\n"
    else:
        text += "Nu exista conturi bancare configurate."

    return text


def format_treasury_combined_response(data: Dict[str, Any], company_name: str = None) -> str:
    """
    Format combined treasury data (Casa + Banca) for Telegram.

    Shows grand total, Casa section with accounts, and Banca section with accounts
    in a single unified message. Compact format without section titles.

    Args:
        data: Dict with 'casa' and 'banca' keys from get_treasury_breakdown_split()
        company_name: Company name (kept for compatibility, not used)

    Returns:
        Formatted Markdown string with grand total and both sections

    Example:
        data = {'casa': {...}, 'banca': {...}}
        text = format_treasury_combined_response(data)
    """
    def format_amount(amount: int) -> str:
        """Format amount with period as thousands separator (Romanian style)."""
        return f"{amount:,}".replace(",", ".")

    text = ""

    # Extract totals - rounded to whole RON
    casa_total = round(data.get('casa', {}).get('total', 0))
    banca_total = round(data.get('banca', {}).get('total', 0))
    grand_total = casa_total + banca_total

    # Grand total header
    text += f"**Sold Trezorerie:** {format_amount(grand_total)} RON\n\n"

    # Casa section - compact
    text += f"**Casa:** {format_amount(casa_total)} RON\n"
    casa_accounts = data.get('casa', {}).get('accounts', [])
    if casa_accounts:
        for acc in casa_accounts:
            name = acc.get('name', 'N/A')
            balance = round(acc.get('balance', 0))
            text += f"  - {name}: {format_amount(balance)} RON\n"

    text += "\n"

    # Banca section - compact
    text += f"**Banca:** {format_amount(banca_total)} RON\n"
    banca_accounts = data.get('banca', {}).get('accounts', [])
    if banca_accounts:
        for acc in banca_accounts:
            name = acc.get('name', 'N/A')
            balance = round(acc.get('balance', 0))
            text += f"  - {name}: {format_amount(balance)} RON\n"

    return text


def format_clients_balance_response(
    clients: List[Dict[str, Any]],
    maturity_data: Dict[str, Any],
    company_name: str = None
) -> str:
    """
    Format clients balance with maturity breakdown (content only, no header).

    Args:
        clients: List of client dicts with id, name, balance
        maturity_data: Dict with in_term, overdue, total
        company_name: Company name (kept for compatibility, not used)

    Returns:
        Formatted Markdown string for Telegram

    Example:
        clients = [{'id': 1, 'name': 'Client A', 'balance': 15000}]
        maturity = {'in_term': 10000, 'overdue': 5000, 'total': 15000}
        text = format_clients_balance_response(clients, maturity)
    """
    text = ""

    # Maturity breakdown - rotunjit la leu (0 zecimale)
    total = round(maturity_data.get('total', 0))
    in_term = round(maturity_data.get('in_term', 0))
    overdue = round(maturity_data.get('overdue', 0))

    text += f"**Sold Total:** {total:,} RON\n\n"

    text += "**Defalcare:**\n"
    text += f"  - In termen: {in_term:,} RON\n"
    text += f"  - Restanta: {overdue:,} RON\n\n"

    # Top 10 clients
    if clients:
        text += f"**Top 10 Clienti** ({len(clients)} total):\n"
        # Sort by balance descending
        sorted_clients = sorted(
            clients,
            key=lambda x: x.get('balance', 0),
            reverse=True
        )

        for idx, client in enumerate(sorted_clients[:10], 1):
            name = client.get('name', 'N/A')
            balance = round(client.get('balance', 0))
            text += f"{idx}. {name}: {balance:,} RON\n"

        if len(clients) > 10:
            text += f"\nApasa butonul pentru lista completa"
    else:
        text += "Nu exista clienti cu solduri."

    return text


def format_suppliers_balance_response(
    suppliers: List[Dict[str, Any]],
    maturity_data: Dict[str, Any],
    company_name: str = None
) -> str:
    """
    Format suppliers balance with maturity breakdown (content only, no header).

    Args:
        suppliers: List of supplier dicts with id, name, balance
        maturity_data: Dict with in_term, overdue, total
        company_name: Company name (kept for compatibility, not used)

    Returns:
        Formatted Markdown string for Telegram

    Example:
        suppliers = [{'id': 1, 'name': 'Supplier A', 'balance': 5000}]
        maturity = {'in_term': 4000, 'overdue': 1000, 'total': 5000}
        text = format_suppliers_balance_response(suppliers, maturity)
    """
    text = ""

    # Maturity breakdown - rotunjit la leu (0 zecimale)
    total = round(maturity_data.get('total', 0))
    in_term = round(maturity_data.get('in_term', 0))
    overdue = round(maturity_data.get('overdue', 0))

    text += f"**Sold Total:** {total:,} RON\n\n"

    text += "**Defalcare:**\n"
    text += f"  - In termen: {in_term:,} RON\n"
    text += f"  - Restanta: {overdue:,} RON\n\n"

    # Top 10 suppliers
    if suppliers:
        text += f"**Top 10 Furnizori** ({len(suppliers)} total):\n"
        # Sort by balance descending
        sorted_suppliers = sorted(
            suppliers,
            key=lambda x: x.get('balance', 0),
            reverse=True
        )

        for idx, supplier in enumerate(sorted_suppliers[:10], 1):
            name = supplier.get('name', 'N/A')
            balance = round(supplier.get('balance', 0))
            text += f"{idx}. {name}: {balance:,} RON\n"

        if len(suppliers) > 10:
            text += f"\nApasa butonul pentru lista completa"
    else:
        text += "Nu exista furnizori cu solduri."

    return text


def format_cashflow_evolution_response(
    performance_data: Dict[str, Any],
    monthly_data: Dict[str, Any],
    company_name: str = None
) -> str:
    """
    Format cash flow evolution data - Table format with mini-charts.

    Args:
        performance_data: Dict with current_year and previous_year YTD data
        monthly_data: Dict with months, incasari, plati arrays + prev year data
        company_name: Company name (kept for compatibility, not used)

    Returns:
        Formatted Markdown string for Telegram (monospace table)

    Example:
        YTD 2024 vs 2023:
                  2024       2023      Δ      Trend
        Inc:    500,000    480,000   +4.2%   ████░
        Plt:    450,000    440,000   +2.3%   ███░
        Net:     50,000     40,000  +25.0%   █████
    """
    text = ""

    # Helper functions
    def calc_percent_change(current: float, previous: float) -> str:
        """Calculate percentage change: +4.2% or -3.5%"""
        if previous == 0:
            return "+100%" if current > 0 else "0.0%"
        change = ((current - previous) / previous) * 100
        sign = "+" if change >= 0 else ""
        return f"{sign}{change:.1f}%"

    def create_mini_chart(current: float, previous: float, width: int = 5) -> str:
        """Create mini bar chart: ████░ (proportional bars)"""
        if current == 0 and previous == 0:
            return "─" * width

        max_val = max(current, previous)
        if max_val == 0:
            return "─" * width

        curr_bars = int((current / max_val) * width)
        prev_bars = int((previous / max_val) * width)

        # Use filled and light blocks
        filled = "█" * curr_bars
        light = "░" * (width - curr_bars)
        return filled + light

    def get_trend_arrow(current: float, previous: float) -> str:
        """Get trend arrow: ↑ or ↓ or →"""
        if current > previous * 1.02:  # More than 2% increase
            return "↑"
        elif current < previous * 0.98:  # More than 2% decrease
            return "↓"
        else:
            return "→"

    # Extract YTD data
    current = performance_data.get('current_year', {})
    previous = performance_data.get('previous_year', {})

    current_year = current.get('year', '2024')
    previous_year = previous.get('year', '2023')

    inc_cur = round(current.get('incasari', 0))
    plt_cur = round(current.get('plati', 0))
    net_cur = round(current.get('net', 0))

    inc_prev = round(previous.get('incasari', 0))
    plt_prev = round(previous.get('plati', 0))
    net_prev = round(previous.get('net', 0))

    # YTD Table Header
    text += f"**YTD {current_year} vs {previous_year}:**\n"
    text += f"`      {current_year:>10}  {previous_year:>10}     Δ    `\n"

    # YTD Rows
    inc_pct = calc_percent_change(inc_cur, inc_prev)
    text += f"`Inc: {inc_cur:>10,} {inc_prev:>10,}  {inc_pct:>6}`\n"

    plt_pct = calc_percent_change(plt_cur, plt_prev)
    text += f"`Plt: {plt_cur:>10,} {plt_prev:>10,}  {plt_pct:>6}`\n"

    net_pct = calc_percent_change(net_cur, net_prev)
    text += f"`Net: {net_cur:>10,} {net_prev:>10,}  {net_pct:>6}`\n\n"

    # Monthly Evolution Table - Simplified (Net only)
    months = monthly_data.get('months', [])
    incasari = monthly_data.get('incasari', [])
    plati = monthly_data.get('plati', [])
    incasari_prev = monthly_data.get('incasari_prev', [])
    plati_prev = monthly_data.get('plati_prev', [])

    if months and len(months) > 0:
        text += "**Evolutie Net (12 luni):**\n"
        text += f"`      {current_year:>10}  {previous_year:>10}     Δ    `\n"

        for i, month in enumerate(months):
            inc = incasari[i] if i < len(incasari) else 0
            plt = plati[i] if i < len(plati) else 0
            inc_p = incasari_prev[i] if i < len(incasari_prev) else 0
            plt_p = plati_prev[i] if i < len(plati_prev) else 0

            net = inc - plt
            net_p = inc_p - plt_p

            # Extract short month name (first 3 chars before apostrophe)
            month_short = month.split("'")[0][:3] if "'" in month else month[:3]

            # Calculate percentage change
            net_pct = calc_percent_change(net, net_p)

            # Format row: Luna Net'current Net'prev Δ (aligned with YTD)
            text += f"`{month_short:<4} {int(net):>10,} {int(net_p):>10,}  {net_pct:>6}`\n"
    else:
        text += "Nu exista date lunare disponibile."

    return text


def format_client_detail_response(
    client: Dict[str, Any],
    invoices: List[Dict[str, Any]],
    company_name: str = None
) -> str:
    """
    Format client details with invoices - COMPACT TABLE FORMAT.

    Args:
        client: Dict with client info (id, name, balance)
        invoices: List of invoice dicts for this client
        company_name: Company name (kept for compatibility, not used)

    Returns:
        Formatted Markdown string for Telegram (compact, no emojis)

    Example:
        client = {'id': 1, 'name': 'Client A', 'balance': 15000}
        invoices = [{'id': 1, 'number': 'FV001', 'amount': 5000, 'status': 'unpaid'}]
        text = format_client_detail_response(client, invoices)
    """
    client_name = client.get('name', 'N/A')
    balance = client.get('balance', 0)

    # Header with client info
    text = f"**{client_name}**\n"
    text += f"**Sold total: {balance:,.2f} RON**"
    if invoices and len(invoices) > 1:
        text += f" • {len(invoices)} facturi"
    text += "\n\n"

    # Invoices - compact table format (no emojis)
    if invoices:
        from datetime import datetime

        # Sort invoices by date (most recent first)
        sorted_invoices = sorted(invoices, key=lambda x: x.get('dataact') or datetime.min, reverse=True)

        # Invoice list - simple format without table
        text += "Facturi cu sold:\n"
        text += "━━━━━━━━━━━━━━━━━━━━\n"

        # Invoice rows - one line each, simple format
        for inv in sorted_invoices[:10]:
            # Backend returns: nract, totctva, soldfinal, datascad, dataact, achitat
            number = str(inv.get('nract', 'N/A'))
            dataact = inv.get('dataact')

            # Parse date - handle various formats to ensure dd.mm.yyyy
            if dataact:
                if isinstance(dataact, str):
                    try:
                        # Try ISO format first: "2024-10-25" or "2024-10-25 00:00:00"
                        if '-' in dataact and len(dataact) >= 10:
                            parsed_date = datetime.strptime(dataact[:10], '%Y-%m-%d')
                            date_str = parsed_date.strftime('%d.%m.%Y')
                        # Already in dd.mm.yyyy format
                        elif '.' in dataact:
                            date_str = dataact.split()[0][:10]  # Take just date part
                        else:
                            date_str = dataact[:10] if len(dataact) >= 10 else dataact
                    except:
                        date_str = dataact[:10] if len(dataact) >= 10 else dataact
                else:
                    # Datetime object - format as dd.mm.yyyy
                    date_str = dataact.strftime('%d.%m.%Y')
            else:
                date_str = 'N/A'

            sold = float(inv.get('soldfinal', 0) or 0)

            # Simple format: Nr  •  Data  •  Sold
            text += f"Nr {number}  •  {date_str}  •  {sold:,.2f} RON\n"

        if len(invoices) > 10:
            text += f"\n\n+{len(invoices) - 10} facturi"
    else:
        text += "Nu exista facturi neachitate"

    return text


def format_supplier_detail_response(
    supplier: Dict[str, Any],
    invoices: List[Dict[str, Any]],
    company_name: str = None
) -> str:
    """
    Format supplier details with invoices - COMPACT TABLE FORMAT.

    Args:
        supplier: Dict with supplier info (id, name, balance)
        invoices: List of invoice dicts for this supplier
        company_name: Company name (kept for compatibility, not used)

    Returns:
        Formatted Markdown string for Telegram (compact, no emojis)

    Example:
        supplier = {'id': 1, 'name': 'Supplier A', 'balance': 5000}
        invoices = [{'id': 1, 'number': 'FC001', 'amount': 2000, 'status': 'unpaid'}]
        text = format_supplier_detail_response(supplier, invoices)
    """
    supplier_name = supplier.get('name', 'N/A')
    balance = supplier.get('balance', 0)

    # Header with supplier info
    text = f"**{supplier_name}**\n"
    text += f"**Sold total: {balance:,.2f} RON**"
    if invoices and len(invoices) > 1:
        text += f" • {len(invoices)} facturi"
    text += "\n\n"

    # Invoices - compact table format (no emojis)
    if invoices:
        from datetime import datetime

        # Sort invoices by date (most recent first)
        sorted_invoices = sorted(invoices, key=lambda x: x.get('dataact') or datetime.min, reverse=True)

        # Invoice list - simple format without table
        text += "Facturi cu sold:\n"
        text += "━━━━━━━━━━━━━━━━━━━━\n"

        # Invoice rows - one line each, simple format
        for inv in sorted_invoices[:10]:
            # Backend returns: nract, totctva, soldfinal, datascad, dataact, achitat
            number = str(inv.get('nract', 'N/A'))
            dataact = inv.get('dataact')

            # Parse date - handle various formats to ensure dd.mm.yyyy
            if dataact:
                if isinstance(dataact, str):
                    try:
                        # Try ISO format first: "2024-10-25" or "2024-10-25 00:00:00"
                        if '-' in dataact and len(dataact) >= 10:
                            parsed_date = datetime.strptime(dataact[:10], '%Y-%m-%d')
                            date_str = parsed_date.strftime('%d.%m.%Y')
                        # Already in dd.mm.yyyy format
                        elif '.' in dataact:
                            date_str = dataact.split()[0][:10]  # Take just date part
                        else:
                            date_str = dataact[:10] if len(dataact) >= 10 else dataact
                    except:
                        date_str = dataact[:10] if len(dataact) >= 10 else dataact
                else:
                    # Datetime object - format as dd.mm.yyyy
                    date_str = dataact.strftime('%d.%m.%Y')
            else:
                date_str = 'N/A'

            sold = float(inv.get('soldfinal', 0) or 0)

            # Simple format: Nr  •  Data  •  Sold
            text += f"Nr {number}  •  {date_str}  •  {sold:,.2f} RON\n"

        if len(invoices) > 10:
            text += f"\n\n+{len(invoices) - 10} facturi"
    else:
        text += "Nu exista facturi neachitate"

    return text


# =========================================================================
# FAZA 6: Performance Footer for Cache Monitoring
# =========================================================================


def add_performance_footer(message: str, cache_hit: bool, time_ms: float, cache_source: str = None) -> str:
    """
    Add compact performance footer to bot responses.

    Shows data source (cached L1/L2 or database) and response time.
    Format: "cached L1 | 15ms", "cached L2 | 25ms" or "db | 285ms"

    Args:
        message: Existing message text
        cache_hit: True if data came from cache
        time_ms: Response time in milliseconds
        cache_source: Cache source ("L1" for memory, "L2" for SQLite) if cache_hit is True

    Returns:
        Message with performance footer appended

    Example:
        >>> add_performance_footer("Dashboard data...", True, 52.3, "L1")
        "Dashboard data...\n\ncached L1 | 52ms"
        >>> add_performance_footer("Dashboard data...", True, 25.8, "L2")
        "Dashboard data...\n\ncached L2 | 26ms"
        >>> add_performance_footer("Dashboard data...", False, 285.7)
        "Dashboard data...\n\ndb | 286ms"
    """
    if cache_hit and cache_source:
        source = f"cached {cache_source}"
    elif cache_hit:
        source = "cached"  # Fallback if source not provided
    else:
        source = "db"

    footer = f"\n\n`{source} | {time_ms:.0f}ms`"
    return message + footer