//! Display/rendering for the broker-agnostic `audit` output.
//!
//! Reconciliation *compute* now lives in `analytics/reconcile/` (pure,
//! testable, reusable by finrev). This file keeps only the ANSI-table
//! renderers, plus back-compat re-exports so `audit.zig` and
//! `hygiene.zig` keep addressing the API as `common.*`.

const std = @import("std");
const zfin = @import("../../root.zig");
const cli = @import("../common.zig");
const Money = @import("../../Money.zig");
const analysis = @import("../../analytics/analysis.zig");
const portfolio_mod = @import("../../models/portfolio.zig");
const Date = @import("../../Date.zig");
const reconcile = @import("../../analytics/reconcile.zig");

// ── Back-compat re-exports of the reconciliation compute API ──
pub const value_tolerance = reconcile.common.value_tolerance;
pub const cash_tolerance = reconcile.common.cash_tolerance;
pub const AccountValueExpectation = reconcile.AccountValueExpectation;
pub const cdLotAllowance = reconcile.cdLotAllowance;
pub const accountValueExpectation = reconcile.accountValueExpectation;
pub const SymbolComparison = reconcile.SymbolComparison;
pub const AccountComparison = reconcile.AccountComparison;
pub const compareAccounts = reconcile.compareAccounts;
pub const hasAccountDiscrepancies = reconcile.hasAccountDiscrepancies;
pub const ExportScope = reconcile.ExportScope;
pub const ExportView = reconcile.ExportView;
pub const splitUnmapped = reconcile.splitUnmapped;
pub const AbsentAccount = reconcile.AbsentAccount;
pub const presentNumbers = reconcile.presentNumbers;
pub const findAbsentAccounts = reconcile.findAbsentAccounts;

// ── Unmapped accounts ────────────────────────────────────────

/// Report an export's unmapped accounts (see `splitUnmapped`) in muted
/// text: a line with the count, then one line per account so the number
/// to map is right there. For an export skipped outright, the
/// per-account list is printed only when `list_skipped`: someone else's
/// whole household is noise on every routine audit, but worth seeing
/// when you point audit at the file yourself. Prints nothing when every
/// account is mapped. `T` is `AccountComparison` or
/// `SchwabAccountComparison`; both carry `brokerage_name` and
/// `account_number`.
pub fn displayUnmapped(
    comptime T: type,
    label: []const u8,
    view: ExportView(T),
    list_skipped: bool,
    color: bool,
    out: *std.Io.Writer,
) !void {
    const n = view.unmapped.len;
    if (n == 0) return;
    if (view.skipped()) {
        if (n == 1) {
            try cli.printFg(out, color, cli.CLR_MUTED, "    {s}: its only account is not in accounts.srf; skipped (another portfolio's export?)\n", .{label});
        } else {
            try cli.printFg(out, color, cli.CLR_MUTED, "    {s}: none of its {d} accounts are in accounts.srf; skipped (another portfolio's export?)\n", .{ label, n });
        }
        if (!list_skipped) return;
    } else {
        try cli.printFg(out, color, cli.CLR_MUTED, "    {s}: {d} {s} not in accounts.srf, not reconciled\n", .{ label, n, accountsNoun(n) });
    }
    for (view.unmapped) |r| {
        try cli.printFg(out, color, cli.CLR_MUTED, "      {s} #{s}\n", .{ r.brokerage_name, r.account_number });
    }
}

/// "account" or "accounts", for a count of them.
pub fn accountsNoun(n: usize) []const u8 {
    return if (n == 1) "account" else "accounts";
}

// ── Ratio suggestions ────────────────────────────────────────

/// After displaying audit results, check for price_ratio positions where
/// the brokerage NAV implies a different ratio than what's configured.
/// Outputs actionable suggestions for portfolio.srf updates.
///
/// Normally only lots with `price_ratio != 1.0` get suggestions -
/// the typical case is an institutional share class where the
/// configured ratio needs to drift toward current retail-vs-
/// institutional NAV. Lots with `price_ratio == 1.0` usually have
/// nothing to adjust.
///
/// Exception: accounts flagged `direct_indexing::true` in
/// `accounts.srf`. These are proxy baskets whose tracking-error
/// drift is expressed by periodically nudging the ratio even
/// though the starting ratio is 1.0. For those accounts we still
/// emit a suggestion when brokerage and portfolio values disagree
/// - the suggested ratio is just `brokerage_NAV / retail_price`
/// applied against the existing lot share count, same formula as
/// the institutional-class case.
pub fn displayRatioSuggestions(
    allocator: std.mem.Allocator,
    results: []const AccountComparison,
    portfolio: zfin.Portfolio,
    prices: std.StringHashMap(f64),
    account_map: ?analysis.AccountMap,
    color: bool,
    out: *std.Io.Writer,
) !void {
    const suggestions = try reconcile.ratioSuggestions(allocator, results, portfolio, prices, account_map);
    defer allocator.free(suggestions);
    if (suggestions.len == 0) return;

    try out.print("\n", .{});
    try cli.printBold(out, color, "  Ratio updates", .{});
    try cli.printFg(out, color, cli.CLR_MUTED, "  (for portfolio.srf)\n", .{});

    for (suggestions) |s| {
        var cur_buf: [24]u8 = undefined;
        var sug_buf: [24]u8 = undefined;
        var drift_buf: [16]u8 = undefined;
        const cur_str = std.fmt.bufPrint(&cur_buf, "{d}", .{s.current_ratio}) catch "?";
        const sug_str = std.fmt.bufPrint(&sug_buf, "{d}", .{s.suggested_ratio}) catch "?";
        const drift_str = std.fmt.bufPrint(&drift_buf, "{d:.2}%", .{s.drift_pct}) catch "?";

        try out.print("    {s:<16} ", .{s.lot_symbol});
        try cli.printFg(out, color, cli.CLR_MUTED, "ticker {s:<6}", .{s.price_symbol});
        try out.print("  ratio {s} -> ", .{cur_str});
        try cli.printBold(out, color, "{s}", .{sug_str});
        try cli.printFg(out, color, cli.CLR_MUTED, "  ({s} drift)\n", .{drift_str});
    }

    try out.print("\n", .{});
}

// ── Display ─────────────────────────────────────────────────

pub fn displayResults(results: []const AccountComparison, color: bool, out: *std.Io.Writer) !void {
    try cli.printBold(out, color, "\nPortfolio Audit", .{});
    try cli.printFg(out, color, cli.CLR_MUTED, "  (brokerage is source of truth)\n", .{});
    try out.print("========================================\n\n", .{});

    var total_portfolio: f64 = 0;
    var total_brokerage: f64 = 0;
    var total_option_delta: f64 = 0;
    var discrepancy_count: usize = 0;

    for (results) |acct| {
        // Account header
        if (acct.account_name.len > 0) {
            try cli.printBold(out, color, "  {s}", .{acct.account_name});
            try cli.printFg(out, color, cli.CLR_MUTED, "  ({s}, #{s})\n", .{ acct.brokerage_name, acct.account_number });
        } else {
            try cli.printBold(out, color, "  {s} #{s}", .{ acct.brokerage_name, acct.account_number });
            try cli.printFg(out, color, cli.CLR_WARNING, "  (unmapped - add account_number to accounts.srf)\n", .{});
        }

        // Column headers
        try cli.printFg(out, color, cli.CLR_MUTED, "    {s:<24} {s:>12} {s:>12} {s:>10} {s:>10} {s}\n", .{
            "Symbol", "PF Shares", "BR Shares", "PF Price", "BR Price", "",
        });

        for (acct.comparisons) |cmp| {
            var pf_shares_buf: [16]u8 = undefined;
            var br_shares_buf: [16]u8 = undefined;
            var pf_price_buf: [16]u8 = undefined;
            var br_price_buf: [16]u8 = undefined;

            // Classify this row
            const shares_ok = if (cmp.shares_delta) |d| @abs(d) < 0.01 else !cmp.only_in_brokerage;
            const is_cash_mismatch = cmp.is_cash and (if (cmp.value_delta) |d| @abs(d) >= cash_tolerance else false);
            // A CD's value delta is an expected dealer mark up to its
            // band; only a delta beyond what its terms can explain is a
            // real discrepancy. Stale stock prices (shares match, no CD)
            // stay muted, as before.
            const cd_band = @max(value_tolerance, cmp.cd_allowance);
            const cd_value_exceeded = cmp.is_cd and (if (cmp.value_delta) |d| @abs(d) > cd_band else false);
            const is_real_mismatch = !shares_ok or cmp.only_in_brokerage or cmp.only_in_portfolio or is_cash_mismatch or cd_value_exceeded;

            if (is_real_mismatch) discrepancy_count += 1;

            // Format share strings
            const pf_shares_str: []const u8 = if (cmp.is_cash)
                (std.fmt.bufPrint(&pf_shares_buf, "{f}", .{Money.from(cmp.portfolio_value)}) catch "$?")
            else
                std.fmt.bufPrint(&pf_shares_buf, "{d:.3}", .{cmp.portfolio_shares}) catch "?";

            const br_shares_str: []const u8 = if (cmp.is_cash)
                (if (cmp.brokerage_value) |v| (std.fmt.bufPrint(&br_shares_buf, "{f}", .{Money.from(v)}) catch "$?") else "--")
            else if (cmp.brokerage_shares) |s|
                (std.fmt.bufPrint(&br_shares_buf, "{d:.3}", .{s}) catch "?")
            else
                "--";

            const pf_price_str: []const u8 = if (cmp.is_cash)
                ""
            else if (cmp.portfolio_price) |p|
                (std.fmt.bufPrint(&pf_price_buf, "{d:.2}", .{p}) catch "?")
            else
                "--";

            const br_price_str: []const u8 = if (cmp.is_cash)
                ""
            else if (cmp.brokerage_price) |p|
                (std.fmt.bufPrint(&br_price_buf, "{d:.2}", .{p}) catch "?")
            else
                "--";

            // Determine PF Shares color (relative to brokerage)
            const shares_color: enum { normal, positive, negative, warning } = blk: {
                if (cmp.only_in_portfolio) break :blk .warning;
                if (cmp.is_cash and is_cash_mismatch) {
                    break :blk if (cmp.value_delta.? > 0) .negative else .positive;
                }
                if (shares_ok) break :blk .normal;
                if (cmp.shares_delta) |d| {
                    break :blk if (d > 0) .negative else .positive;
                }
                break :blk .normal;
            };

            // Determine status text
            var status_buf: [64]u8 = undefined;
            const status: []const u8 = blk: {
                if (cmp.only_in_brokerage) break :blk "Brokerage only";
                if (cmp.only_in_portfolio) break :blk "Portfolio only";

                if (is_cash_mismatch) {
                    if (cmp.value_delta) |d| {
                        const sign: []const u8 = if (d >= 0) "+" else "-";
                        break :blk std.fmt.bufPrint(&status_buf, "Cash {s}{f}", .{ sign, Money.from(@abs(d)) }) catch "Cash mismatch";
                    }
                }

                if (!shares_ok) {
                    if (cmp.shares_delta) |d| {
                        const sign: []const u8 = if (d > 0) "+" else "";
                        break :blk std.fmt.bufPrint(&status_buf, "Shares {s}{d:.3}", .{ sign, d }) catch "Shares mismatch";
                    }
                }

                // Options: shares match is sufficient - value delta is expected
                // (cost basis vs mark-to-market) and not actionable
                if (cmp.is_option) break :blk "Option";

                // Shares match - show value delta (stale price) if any, muted
                if (cmp.value_delta) |d| {
                    if (@abs(d) >= value_tolerance) {
                        const sign: []const u8 = if (d >= 0) "+" else "-";
                        break :blk std.fmt.bufPrint(&status_buf, "Value {s}{f}", .{ sign, Money.from(@abs(d)) }) catch "";
                    }
                }

                break :blk "";
            };

            // Status color: real mismatches in warning, stale values muted, ok is blank
            const status_color: enum { warning, muted, none } = blk: {
                if (is_real_mismatch) break :blk .warning;
                if (status.len > 0) break :blk .muted;
                break :blk .none;
            };

            // Print symbol
            try out.print("    {s:<24} ", .{cmp.symbol});

            // Print PF Shares with color
            switch (shares_color) {
                .positive => try cli.printFg(out, color, cli.CLR_POSITIVE, "{s:>12}", .{pf_shares_str}),
                .negative => try cli.printFg(out, color, cli.CLR_NEGATIVE, "{s:>12}", .{pf_shares_str}),
                .warning => try cli.printFg(out, color, cli.CLR_WARNING, "{s:>12}", .{pf_shares_str}),
                .normal => try out.print("{s:>12}", .{pf_shares_str}),
            }

            // Print BR Shares, prices
            try out.print(" {s:>12} {s:>10} {s:>10} ", .{ br_shares_str, pf_price_str, br_price_str });

            // Print status
            switch (status_color) {
                .warning => try cli.printFg(out, color, cli.CLR_WARNING, "{s}\n", .{status}),
                .muted => try cli.printFg(out, color, cli.CLR_MUTED, "{s}\n", .{status}),
                .none => try out.print("{s}\n", .{status}),
            }
        }

        // Account totals
        try cli.printFg(out, color, cli.CLR_MUTED, "    {s:<24} {s:>12} {s:>12} {f} {f} ", .{
            "", "", "", Money.from(acct.portfolio_total).padRight(10), Money.from(acct.brokerage_total).padRight(10),
        });

        const adj_delta = acct.total_delta - acct.option_value_delta;
        if (@abs(adj_delta) < 1.0) {
            // no delta text needed
        } else {
            const sign: []const u8 = if (adj_delta >= 0) "+" else "-";
            const rgb = if (adj_delta >= 0) cli.CLR_NEGATIVE else cli.CLR_POSITIVE;
            try cli.printFg(out, color, rgb, "Delta {s}{f}", .{ sign, Money.from(@abs(adj_delta)) });
        }

        if (@abs(acct.option_value_delta) >= 1.0) {
            const opt_sign: []const u8 = if (acct.option_value_delta >= 0) "+" else "-";
            try cli.printFg(out, color, cli.CLR_MUTED, "  (options {s}{f})", .{ opt_sign, Money.from(@abs(acct.option_value_delta)) });
        }
        try out.print("\n\n", .{});

        total_portfolio += acct.portfolio_total;
        total_brokerage += acct.brokerage_total;
        total_option_delta += acct.option_value_delta;
    }

    // Grand totals
    const grand_delta = total_brokerage - total_portfolio;
    const grand_adj_delta = grand_delta - total_option_delta;

    try cli.printBold(out, color, "  Total: portfolio {f}  brokerage {f}", .{
        Money.from(total_portfolio),
        Money.from(total_brokerage),
    });

    if (@abs(grand_adj_delta) < 1.0) {
        // no delta text needed
    } else {
        const sign: []const u8 = if (grand_adj_delta >= 0) "+" else "-";
        const rgb = if (grand_adj_delta >= 0) cli.CLR_NEGATIVE else cli.CLR_POSITIVE;
        try cli.printFg(out, color, rgb, "  delta {s}{f}", .{ sign, Money.from(@abs(grand_adj_delta)) });
    }

    if (@abs(total_option_delta) >= 1.0) {
        const opt_sign: []const u8 = if (total_option_delta >= 0) "+" else "-";
        try cli.printFg(out, color, cli.CLR_MUTED, "  (options {s}{f})", .{ opt_sign, Money.from(@abs(total_option_delta)) });
    }
    try out.print("\n", .{});

    if (discrepancy_count > 0) {
        try cli.printFg(out, color, cli.CLR_WARNING, "  {d} {s} to investigate\n", .{ discrepancy_count, if (discrepancy_count == 1) @as([]const u8, "mismatch") else @as([]const u8, "mismatches") });
    }
    try out.print("\n", .{});
}
/// Render the "portfolio accounts not found in <scope>" advisory.
/// Silent when `absent` is empty, so it composes cleanly after both
/// the verbose audit table and the compact "no discrepancies" line.
///
/// `scope_phrase` names what the absence is relative to: the explicit
/// single-file command passes "this export"; the flagless audit, which
/// unions the present accounts across every discovered file before
/// computing absence, passes "any export".
pub fn displayAbsentAccounts(absent: []const AbsentAccount, color: bool, scope_phrase: []const u8, out: *std.Io.Writer) !void {
    if (absent.len == 0) return;

    try out.print("\n", .{});
    try cli.printFg(out, color, cli.CLR_WARNING, "  Portfolio accounts not found in {s}", .{scope_phrase});
    try cli.printFg(out, color, cli.CLR_MUTED, "  (stale, or not exported?)\n", .{});
    for (absent) |a| {
        try out.print("    ", .{});
        try cli.printFg(out, color, cli.CLR_WARNING, "{s}", .{a.account_name});
        try cli.printFg(out, color, cli.CLR_MUTED, "  (#{s})", .{a.account_number});
        try out.print("  {f}\n", .{Money.from(a.portfolio_total)});
    }
    try out.print("\n", .{});
}
// ── displayResults rendering ─────────────────────────────────

test "displayResults: renders every row classification and the totals block" {
    const allocator = std.testing.allocator;
    _ = allocator;

    // One mapped account exercising each status branch, plus one
    // unmapped account exercising the unmapped header + only_in_* rows.
    const ira_cmps = [_]SymbolComparison{
        // matched, clean -> blank status, normal color
        .{ .symbol = "AAPL", .portfolio_shares = 10, .brokerage_shares = 10, .portfolio_price = 200, .brokerage_price = 200, .portfolio_value = 2000, .brokerage_value = 2000, .shares_delta = 0, .value_delta = 0, .is_cash = false, .is_option = false, .only_in_brokerage = false, .only_in_portfolio = false },
        // share mismatch -> "Shares +2.000"
        .{ .symbol = "MSFT", .portfolio_shares = 5, .brokerage_shares = 7, .portfolio_price = 300, .brokerage_price = 300, .portfolio_value = 1500, .brokerage_value = 2100, .shares_delta = 2, .value_delta = 600, .is_cash = false, .is_option = false, .only_in_brokerage = false, .only_in_portfolio = false },
        // share mismatch, broker shows FEWER shares -> negative delta, "positive" color arm
        .{ .symbol = "NVDA", .portfolio_shares = 10, .brokerage_shares = 8, .portfolio_price = 120, .brokerage_price = 120, .portfolio_value = 1200, .brokerage_value = 960, .shares_delta = -2, .value_delta = -240, .is_cash = false, .is_option = false, .only_in_brokerage = false, .only_in_portfolio = false },
        // cash mismatch -> "Cash +$0.25"
        .{ .symbol = "FDRXX", .portfolio_shares = 0, .brokerage_shares = null, .portfolio_price = null, .brokerage_price = null, .portfolio_value = 38.75, .brokerage_value = 39.00, .shares_delta = null, .value_delta = 0.25, .is_cash = true, .is_option = false, .only_in_brokerage = false, .only_in_portfolio = false },
        // option -> "Option"
        .{ .symbol = "AMZN C", .portfolio_shares = -2, .brokerage_shares = -2, .portfolio_price = 875, .brokerage_price = 1625, .portfolio_value = 1750, .brokerage_value = 3250, .shares_delta = 0, .value_delta = 1500, .is_cash = false, .is_option = true, .only_in_brokerage = false, .only_in_portfolio = false },
        // shares match, stale value -> "Value +$50.00" (muted)
        .{ .symbol = "QTUM", .portfolio_shares = 100, .brokerage_shares = 100, .portfolio_price = 116.0, .brokerage_price = 116.5, .portfolio_value = 11600, .brokerage_value = 11650, .shares_delta = 0, .value_delta = 50, .is_cash = false, .is_option = false, .only_in_brokerage = false, .only_in_portfolio = false },
    };
    const unmapped_cmps = [_]SymbolComparison{
        .{ .symbol = "TSLA", .portfolio_shares = 0, .brokerage_shares = 3, .portfolio_price = null, .brokerage_price = 200, .portfolio_value = 0, .brokerage_value = 600, .shares_delta = 3, .value_delta = 600, .is_cash = false, .is_option = false, .only_in_brokerage = true, .only_in_portfolio = false },
        .{ .symbol = "GOOG", .portfolio_shares = 4, .brokerage_shares = null, .portfolio_price = 200, .brokerage_price = null, .portfolio_value = 800, .brokerage_value = null, .shares_delta = null, .value_delta = null, .is_cash = false, .is_option = false, .only_in_brokerage = false, .only_in_portfolio = true },
    };
    const results = [_]AccountComparison{
        .{ .account_name = "Sample IRA", .brokerage_name = "SCHWAB", .account_number = "1234", .comparisons = &ira_cmps, .portfolio_total = 16928.75, .brokerage_total = 17479.0, .total_delta = 550.25, .option_value_delta = 1500, .has_discrepancies = true },
        .{ .account_name = "", .brokerage_name = "FIDELITY", .account_number = "9999", .comparisons = &unmapped_cmps, .portfolio_total = 800, .brokerage_total = 600, .total_delta = -200, .option_value_delta = 0, .has_discrepancies = true },
    };

    var buf: [8192]u8 = undefined;
    var w: std.Io.Writer = .fixed(&buf);
    try displayResults(&results, false, &w);
    const out = w.buffered();

    // Header + account identity
    try std.testing.expect(std.mem.indexOf(u8, out, "Portfolio Audit") != null);
    try std.testing.expect(std.mem.indexOf(u8, out, "Sample IRA") != null);
    try std.testing.expect(std.mem.indexOf(u8, out, "SCHWAB") != null);
    try std.testing.expect(std.mem.indexOf(u8, out, "1234") != null);
    // Unmapped-account header branch
    try std.testing.expect(std.mem.indexOf(u8, out, "unmapped") != null);
    try std.testing.expect(std.mem.indexOf(u8, out, "FIDELITY") != null);
    try std.testing.expect(std.mem.indexOf(u8, out, "9999") != null);
    // Per-row status strings
    try std.testing.expect(std.mem.indexOf(u8, out, "Shares +2.000") != null);
    try std.testing.expect(std.mem.indexOf(u8, out, "Shares -2.000") != null);
    try std.testing.expect(std.mem.indexOf(u8, out, "Cash +") != null);
    try std.testing.expect(std.mem.indexOf(u8, out, "Option") != null);
    try std.testing.expect(std.mem.indexOf(u8, out, "Value +") != null);
    try std.testing.expect(std.mem.indexOf(u8, out, "Brokerage only") != null);
    try std.testing.expect(std.mem.indexOf(u8, out, "Portfolio only") != null);
    // Totals block
    try std.testing.expect(std.mem.indexOf(u8, out, "Total: portfolio") != null);
    try std.testing.expect(std.mem.indexOf(u8, out, "options") != null);
    // 5 real mismatches (2 share, cash, brokerage-only, portfolio-only) -> plural
    try std.testing.expect(std.mem.indexOf(u8, out, "mismatches") != null);
}

test "displayResults: color=true emits ANSI and singular mismatch label" {
    const cmps = [_]SymbolComparison{
        .{ .symbol = "GOOG", .portfolio_shares = 4, .brokerage_shares = null, .portfolio_price = 200, .brokerage_price = null, .portfolio_value = 800, .brokerage_value = null, .shares_delta = null, .value_delta = null, .is_cash = false, .is_option = false, .only_in_brokerage = false, .only_in_portfolio = true },
    };
    const results = [_]AccountComparison{
        .{ .account_name = "Sample Roth", .brokerage_name = "SCHWAB", .account_number = "5678", .comparisons = &cmps, .portfolio_total = 800, .brokerage_total = 0, .total_delta = -800, .option_value_delta = 0, .has_discrepancies = true },
    };

    var buf: [4096]u8 = undefined;
    var w: std.Io.Writer = .fixed(&buf);
    try displayResults(&results, true, &w);
    const out = w.buffered();

    try std.testing.expect(std.mem.indexOf(u8, out, "Portfolio Audit") != null);
    try std.testing.expect(std.mem.indexOf(u8, out, "\x1b[") != null); // ANSI present
    // exactly one real mismatch -> singular label
    try std.testing.expect(std.mem.indexOf(u8, out, "1 mismatch to investigate") != null);
}

test "displayResults: CD value delta within band is muted+uncounted, beyond band warns+counts" {
    // Within band: is_cd, |value_delta| <= cd_allowance -> shown but
    // muted, and not counted in "to investigate".
    {
        const cmps = [_]SymbolComparison{
            .{ .symbol = "CDX", .portfolio_shares = 100000, .brokerage_shares = 100000, .portfolio_price = 1.0, .brokerage_price = 0.9996, .portfolio_value = 100000, .brokerage_value = 99960, .shares_delta = 0, .value_delta = -40, .is_cash = false, .is_option = false, .is_cd = true, .cd_allowance = 680, .only_in_brokerage = false, .only_in_portfolio = false },
        };
        const results = [_]AccountComparison{
            .{ .account_name = "Sample IRA", .brokerage_name = "SCHWAB", .account_number = "1234", .comparisons = &cmps, .portfolio_total = 100000, .brokerage_total = 99960, .total_delta = -40, .option_value_delta = 0, .has_discrepancies = true },
        };
        var buf: [4096]u8 = undefined;
        var w: std.Io.Writer = .fixed(&buf);
        try displayResults(&results, false, &w);
        const out = w.buffered();
        try std.testing.expect(std.mem.indexOf(u8, out, "Value -") != null); // shown, never hidden
        try std.testing.expect(std.mem.indexOf(u8, out, "to investigate") == null); // not counted
    }
    // Beyond band: the same CD marked $5,000 under face -> warn + count.
    {
        const cmps = [_]SymbolComparison{
            .{ .symbol = "CDX", .portfolio_shares = 100000, .brokerage_shares = 100000, .portfolio_price = 1.0, .brokerage_price = 0.95, .portfolio_value = 100000, .brokerage_value = 95000, .shares_delta = 0, .value_delta = -5000, .is_cash = false, .is_option = false, .is_cd = true, .cd_allowance = 680, .only_in_brokerage = false, .only_in_portfolio = false },
        };
        const results = [_]AccountComparison{
            .{ .account_name = "Sample IRA", .brokerage_name = "SCHWAB", .account_number = "1234", .comparisons = &cmps, .portfolio_total = 100000, .brokerage_total = 95000, .total_delta = -5000, .option_value_delta = 0, .has_discrepancies = true },
        };
        var buf: [4096]u8 = undefined;
        var w: std.Io.Writer = .fixed(&buf);
        try displayResults(&results, false, &w);
        const out = w.buffered();
        try std.testing.expect(std.mem.indexOf(u8, out, "Value -") != null);
        try std.testing.expect(std.mem.indexOf(u8, out, "1 mismatch to investigate") != null); // counted
    }
}

// ── displayRatioSuggestions ──────────────────────────────────

test "displayRatioSuggestions: emits a suggestion when broker NAV drifts from configured ratio" {
    const allocator = std.testing.allocator;

    var lots = [_]portfolio_mod.Lot{
        .{ .symbol = "VTHRX", .shares = 100, .open_date = Date.fromYmd(2024, 1, 1), .open_price = 30, .account = "Sample IRA", .price_ratio = 5.0 },
    };
    const portfolio = portfolio_mod.Portfolio{ .lots = &lots, .allocator = allocator };

    var prices = std.StringHashMap(f64).init(allocator);
    defer prices.deinit();
    try prices.put("VTHRX", 5.0); // retail close

    const cmps = [_]SymbolComparison{
        // brokerage_price (inst NAV) 30 / retail 5 = suggested ratio 6, vs configured 5
        .{ .symbol = "VTHRX", .portfolio_shares = 100, .brokerage_shares = 100, .portfolio_price = 25.0, .brokerage_price = 30.0, .portfolio_value = 2500, .brokerage_value = 3000, .shares_delta = 0, .value_delta = 500, .is_cash = false, .is_option = false, .only_in_brokerage = false, .only_in_portfolio = false },
    };
    const results = [_]AccountComparison{
        .{ .account_name = "Sample IRA", .brokerage_name = "SCHWAB", .account_number = "1234", .comparisons = &cmps, .portfolio_total = 2500, .brokerage_total = 3000, .total_delta = 500, .option_value_delta = 0, .has_discrepancies = true },
    };

    var buf: [2048]u8 = undefined;
    var w: std.Io.Writer = .fixed(&buf);
    try displayRatioSuggestions(allocator, &results, portfolio, prices, null, false, &w);
    const out = w.buffered();

    try std.testing.expect(std.mem.indexOf(u8, out, "Ratio updates") != null);
    try std.testing.expect(std.mem.indexOf(u8, out, "VTHRX") != null);
    try std.testing.expect(std.mem.indexOf(u8, out, "ratio 5 -> ") != null);
    try std.testing.expect(std.mem.indexOf(u8, out, "6") != null); // suggested ratio
}

test "displayRatioSuggestions: direct-indexing account suggests even at ratio 1.0" {
    const allocator = std.testing.allocator;

    // price_ratio == 1.0 would normally be skipped, but the account is
    // flagged direct_indexing -> the ratio==1.0 skip is bypassed.
    var lots = [_]portfolio_mod.Lot{
        .{ .symbol = "SPY", .shares = 100, .open_date = Date.fromYmd(2024, 1, 1), .open_price = 400, .account = "Sample Brokerage", .price_ratio = 1.0 },
    };
    const portfolio = portfolio_mod.Portfolio{ .lots = &lots, .allocator = allocator };

    var entries = [_]analysis.AccountTaxEntry{
        .{ .account = "Sample Brokerage", .tax_type = .taxable, .institution = "schwab", .account_number = "5678", .direct_indexing = true },
    };
    const acct_map = analysis.AccountMap{ .entries = &entries, .allocator = allocator };

    var prices = std.StringHashMap(f64).init(allocator);
    defer prices.deinit();
    try prices.put("SPY", 500.0);

    const cmps = [_]SymbolComparison{
        .{ .symbol = "SPY", .portfolio_shares = 100, .brokerage_shares = 100, .portfolio_price = 500, .brokerage_price = 510.0, .portfolio_value = 50000, .brokerage_value = 51000, .shares_delta = 0, .value_delta = 1000, .is_cash = false, .is_option = false, .only_in_brokerage = false, .only_in_portfolio = false },
    };
    const results = [_]AccountComparison{
        .{ .account_name = "Sample Brokerage", .brokerage_name = "SCHWAB", .account_number = "5678", .comparisons = &cmps, .portfolio_total = 50000, .brokerage_total = 51000, .total_delta = 1000, .option_value_delta = 0, .has_discrepancies = true },
    };

    var buf: [2048]u8 = undefined;
    var w: std.Io.Writer = .fixed(&buf);
    try displayRatioSuggestions(allocator, &results, portfolio, prices, acct_map, false, &w);
    const out = w.buffered();

    // suggested = 510/500 = 1.02, configured 1.0 -> drift suggestion emitted
    try std.testing.expect(std.mem.indexOf(u8, out, "Ratio updates") != null);
    try std.testing.expect(std.mem.indexOf(u8, out, "SPY") != null);
    try std.testing.expect(std.mem.indexOf(u8, out, "ratio 1 -> ") != null);
}

test "displayRatioSuggestions: cash/option/only rows produce no output" {
    const allocator = std.testing.allocator;

    const portfolio = portfolio_mod.Portfolio{ .lots = &.{}, .allocator = allocator };
    var prices = std.StringHashMap(f64).init(allocator);
    defer prices.deinit();

    const cmps = [_]SymbolComparison{
        .{ .symbol = "FDRXX", .portfolio_shares = 0, .brokerage_shares = null, .portfolio_price = null, .brokerage_price = null, .portfolio_value = 100, .brokerage_value = 100, .shares_delta = null, .value_delta = 0, .is_cash = true, .is_option = false, .only_in_brokerage = false, .only_in_portfolio = false },
        .{ .symbol = "AMZN C", .portfolio_shares = -2, .brokerage_shares = -2, .portfolio_price = 875, .brokerage_price = 1625, .portfolio_value = 1750, .brokerage_value = 3250, .shares_delta = 0, .value_delta = 1500, .is_cash = false, .is_option = true, .only_in_brokerage = false, .only_in_portfolio = false },
        .{ .symbol = "TSLA", .portfolio_shares = 0, .brokerage_shares = 3, .portfolio_price = null, .brokerage_price = 200, .portfolio_value = 0, .brokerage_value = 600, .shares_delta = 3, .value_delta = 600, .is_cash = false, .is_option = false, .only_in_brokerage = true, .only_in_portfolio = false },
    };
    const results = [_]AccountComparison{
        .{ .account_name = "Sample IRA", .brokerage_name = "SCHWAB", .account_number = "1234", .comparisons = &cmps, .portfolio_total = 1850, .brokerage_total = 3950, .total_delta = 2100, .option_value_delta = 1500, .has_discrepancies = true },
    };

    var buf: [1024]u8 = undefined;
    var w: std.Io.Writer = .fixed(&buf);
    try displayRatioSuggestions(allocator, &results, portfolio, prices, null, false, &w);
    // No qualifying (matched, non-cash, non-option) rows -> header never prints.
    try std.testing.expectEqual(@as(usize, 0), w.buffered().len);
}
test "displayAbsentAccounts: silent when empty, renders names + totals otherwise" {
    var buf: [1024]u8 = undefined;

    // Empty -> no output.
    {
        var w = std.Io.Writer.fixed(&buf);
        try displayAbsentAccounts(&.{}, false, "this export", &w);
        try std.testing.expectEqual(@as(usize, 0), w.buffered().len);
    }

    // Non-empty -> names, numbers, and a money total appear.
    {
        var w = std.Io.Writer.fixed(&buf);
        const absent = [_]AbsentAccount{
            .{ .account_name = "Sample IRA", .account_number = "1234", .portfolio_total = 2100.0 },
        };
        try displayAbsentAccounts(&absent, false, "this export", &w);
        const out = w.buffered();
        try std.testing.expect(std.mem.indexOf(u8, out, "not found in this export") != null);
        try std.testing.expect(std.mem.indexOf(u8, out, "Sample IRA") != null);
        try std.testing.expect(std.mem.indexOf(u8, out, "#1234") != null);
        try std.testing.expect(std.mem.indexOf(u8, out, "$2,100") != null);
    }

    // The scope phrase is caller-supplied (flagless audit passes "any export").
    {
        var w = std.Io.Writer.fixed(&buf);
        const absent = [_]AbsentAccount{
            .{ .account_name = "Sample IRA", .account_number = "1234", .portfolio_total = 2100.0 },
        };
        try displayAbsentAccounts(&absent, false, "any export", &w);
        try std.testing.expect(std.mem.indexOf(u8, w.buffered(), "not found in any export") != null);
    }
}

// ── displayUnmapped ──────────────────────────────────────────

fn testComparison(account_name: []const u8, brokerage_name: []const u8, number: []const u8) AccountComparison {
    return .{
        .account_name = account_name,
        .brokerage_name = brokerage_name,
        .account_number = number,
        .comparisons = &.{},
        .portfolio_total = 0,
        .brokerage_total = 0,
        .total_delta = 0,
        .option_value_delta = 0,
        .has_discrepancies = account_name.len == 0,
    };
}

fn renderUnmapped(buf: []u8, results: []AccountComparison, scope: ExportScope, list_skipped: bool) ![]const u8 {
    var w: std.Io.Writer = .fixed(buf);
    try displayUnmapped(AccountComparison, "schwab", splitUnmapped(AccountComparison, results, scope), list_skipped, false, &w);
    return w.buffered();
}

test "displayUnmapped: names each unmapped account of an all-accounts export" {
    var results = [_]AccountComparison{
        testComparison("Sample IRA", "Sample_IRA", "1234"),
        testComparison("", "Sample_Account", "9012"),
    };
    var buf: [512]u8 = undefined;
    const out = try renderUnmapped(&buf, &results, .all_accounts, false);
    try std.testing.expectEqualStrings(
        "    schwab: 1 account not in accounts.srf, not reconciled\n" ++
            "      Sample_Account #9012\n",
        out,
    );

    // Plural, and the list follows the count.
    var two = [_]AccountComparison{
        testComparison("Sample IRA", "Sample_IRA", "1234"),
        testComparison("", "Sample_Account", "9012"),
        testComparison("", "Sample_Trust", "3456"),
    };
    const out2 = try renderUnmapped(&buf, &two, .all_accounts, false);
    try std.testing.expect(std.mem.startsWith(u8, out2, "    schwab: 2 accounts not in accounts.srf, not reconciled\n"));
    try std.testing.expect(std.mem.indexOf(u8, out2, "      Sample_Trust #3456\n") != null);
}

test "displayUnmapped: a skipped export lists its accounts only when asked" {
    var buf: [512]u8 = undefined;

    var one = [_]AccountComparison{testComparison("", "Sample_Account", "9012")};
    try std.testing.expectEqualStrings(
        "    schwab: its only account is not in accounts.srf; skipped (another portfolio's export?)\n",
        try renderUnmapped(&buf, &one, .all_accounts, false),
    );

    var two = [_]AccountComparison{ testComparison("", "Sample_Account", "9012"), testComparison("", "Sample_Trust", "3456") };
    try std.testing.expectEqualStrings(
        "    schwab: none of its 2 accounts are in accounts.srf; skipped (another portfolio's export?)\n",
        try renderUnmapped(&buf, &two, .all_accounts, false),
    );
    const listed = try renderUnmapped(&buf, &two, .all_accounts, true);
    try std.testing.expect(std.mem.indexOf(u8, listed, "      Sample_Account #9012\n") != null);
    try std.testing.expect(std.mem.indexOf(u8, listed, "      Sample_Trust #3456\n") != null);
}

test "displayUnmapped: silent when every account maps, and for a one-account export" {
    var buf: [512]u8 = undefined;
    var mapped = [_]AccountComparison{testComparison("Sample IRA", "Sample_IRA", "1234")};
    try std.testing.expectEqualStrings("", try renderUnmapped(&buf, &mapped, .all_accounts, true));
    // A one-account export's unmapped account gets the full report from
    // displayResults instead.
    var picked = [_]AccountComparison{testComparison("", "Sample_Account", "9012")};
    try std.testing.expectEqualStrings("", try renderUnmapped(&buf, &picked, .one_account, true));
}

test "displayUnmapped: color mutes the note" {
    var results = [_]AccountComparison{
        testComparison("Sample IRA", "Sample_IRA", "1234"),
        testComparison("", "Sample_Account", "9012"),
    };
    var buf: [512]u8 = undefined;
    var w: std.Io.Writer = .fixed(&buf);
    try displayUnmapped(AccountComparison, "schwab", splitUnmapped(AccountComparison, &results, .all_accounts), false, true, &w);
    var seqbuf: [32]u8 = undefined;
    const mute_seq = try std.fmt.bufPrint(&seqbuf, "\x1b[38;2;{d};{d};{d}m", .{ cli.CLR_MUTED[0], cli.CLR_MUTED[1], cli.CLR_MUTED[2] });
    try std.testing.expect(std.mem.indexOf(u8, w.buffered(), mute_seq) != null);
}