"""Generate LaTeX macros and tables directly from frozen revision artifacts."""

from __future__ import annotations

import argparse
import hashlib
import json
from pathlib import Path
from typing import Any

import numpy as np
import pandas as pd


STRATEGIES = ("canonical_grouped", "scaffold_aware")
SEEDS = (123456, 123457, 123458)
STRATEGY_LABELS = {
    "canonical_grouped": "Identity-grouped",
    "scaffold_aware": "Scaffold-aware",
}
STRATEGY_MACROS = {
    "canonical_grouped": "Canonical",
    "scaffold_aware": "Scaffold",
}
MODEL_LABELS = {
    "gat": "GAT",
    "gcn": "GCN",
    "fpnn": "FPNN",
    "arithmetic_mean": "Arithmetic mean",
    "stack_all_base_only": "Three-base stack",
    "stack_all_plus_descriptors": "Three-base stack + descriptors",
    "stack_gat_gcn": "GAT + GCN stack",
    "stack_gat_fpnn": "GAT + FPNN stack",
    "stack_gcn_fpnn": "GCN + FPNN stack",
    "lab_median": "Laboratory median",
    "descriptor_only_ridge": "Descriptors + laboratory ridge",
    "descriptor_only_et": "Descriptors + laboratory ExtraTrees",
    "fingerprint_no_lab_et": "Morgan ExtraTrees, no laboratory",
    "fingerprint_no_lab_plus_lab_affine": "Morgan ExtraTrees + laboratory affine",
    "fingerprint_only_et": "Morgan + one-hot laboratory ExtraTrees",
    "fingerprint_plus_descriptors_et": "Morgan + descriptors + one-hot laboratory ExtraTrees",
}


def _load_json(path: Path) -> dict[str, Any]:
    return json.loads(path.read_text(encoding="utf-8"))


def _escape_latex(value: object) -> str:
    text = str(value)
    replacements = {
        "\\": r"\textbackslash{}",
        "&": r"\&",
        "%": r"\%",
        "$": r"\$",
        "#": r"\#",
        "_": r"\_",
        "{": r"\{",
        "}": r"\}",
    }
    return "".join(replacements.get(character, character) for character in text)


def _number(value: object, digits: int = 3, dash_for_missing: bool = True) -> str:
    try:
        numeric = float(value)
    except (TypeError, ValueError):
        return "--" if dash_for_missing else str(value)
    if not np.isfinite(numeric):
        return "--"
    return f"{numeric:.{digits}f}"


def _mean_sd(row: pd.Series, metric: str) -> str:
    return f"{_number(row[f'{metric}_mean'])} $\\pm$ {_number(row[f'{metric}_sd'])}"


def _write_metric_macros(
    neural: pd.DataFrame,
    inference_benchmark: dict[str, Any],
    output_path: Path,
) -> None:
    model_macros = {
        "gat": "GAT",
        "gcn": "GCN",
        "fpnn": "FPNN",
        "arithmetic_mean": "ArithmeticMean",
        "stack_all_base_only": "BaseOnlyStack",
        "stack_all_plus_descriptors": "Stack",
    }
    metric_macros = {"r2": "Rtwo", "mae": "MAE", "rmse": "RMSE"}
    lines = ["% Generated from summary/neural_metrics_aggregate.csv."]
    for strategy in STRATEGIES:
        for model, model_macro in model_macros.items():
            row = neural.loc[
                (neural["strategy"] == strategy) & (neural["model"] == model)
            ]
            if len(row) != 1:
                raise ValueError(f"Expected one aggregate row for {strategy}/{model}.")
            record = row.iloc[0]
            for metric, metric_macro in metric_macros.items():
                prefix = f"{STRATEGY_MACROS[strategy]}{model_macro}{metric_macro}"
                lines.append(
                    f"\\newcommand{{\\{prefix}Mean}}{{{_number(record[f'{metric}_mean'])}}}"
                )
                lines.append(
                    f"\\newcommand{{\\{prefix}SD}}{{{_number(record[f'{metric}_sd'])}}}"
                )
    lines.extend(
        [
            f"\\newcommand{{\\InferenceBenchmarkN}}{{{int(inference_benchmark['n_records'])}}}",
            f"\\newcommand{{\\InferenceBenchmarkFolds}}{{{int(inference_benchmark['n_fold_models_per_base'])}}}",
            f"\\newcommand{{\\FeatureGenerationSeconds}}{{{_number(inference_benchmark['feature_generation']['seconds'])}}}",
            f"\\newcommand{{\\FeaturePerRecordMilliseconds}}{{{_number(inference_benchmark['feature_generation']['milliseconds_per_record'])}}}",
            f"\\newcommand{{\\InferenceBundleSeconds}}{{{_number(inference_benchmark['full_bundle']['seconds_mean'])}}}",
            f"\\newcommand{{\\InferenceBundleSecondsSD}}{{{_number(inference_benchmark['full_bundle']['seconds_sd'])}}}",
            f"\\newcommand{{\\InferencePerRecordMilliseconds}}{{{_number(inference_benchmark['full_bundle']['milliseconds_per_record_mean'])}}}",
        ]
    )
    output_path.write_text("\n".join(lines) + "\n", encoding="utf-8")


def _write_dataset_table(audit: dict[str, Any], output_path: Path) -> None:
    rows = (
        ("Structure--laboratory RT observations", audit["n_rows"]),
        ("Laboratories", audit["n_laboratories"]),
        ("Unique RDKit-canonical SMILES", audit["unique_canonical_isomeric_smiles"]),
        ("Unique full InChIKeys", audit["unique_full_inchi_keys"]),
        ("Unique InChIKey connectivity blocks", audit["unique_connectivity_blocks"]),
        ("Connectivity groups observed in multiple laboratories", audit["structures_seen_in_multiple_labs"]),
        ("Rows belonging to multi-laboratory connectivity groups", audit["rows_in_multi_lab_structures"]),
        ("Graph-conversion failures in supplied table", audit["graph_conversion_failures_in_provided_csv"]),
        ("Exact duplicate extra rows", audit["exact_duplicate_extra_rows"]),
        ("Structure--laboratory duplicate extra rows", audit["structure_lab_duplicate_extra_rows"]),
        ("Structure--laboratory groups with conflicting RT", audit["structure_lab_groups_with_conflicting_rt"]),
    )
    lines = [
        r"\begin{table}[htbp]",
        r"\centering",
        r"\caption{Audited observational units and molecular-identity counts.}",
        r"\label{tab:dataset-audit}",
        r"\begin{tabular}{lr}",
        r"\toprule",
        r"Quantity & Count \\",
        r"\midrule",
    ]
    lines.extend(f"{_escape_latex(label)} & {int(value):,} \\\\" for label, value in rows)
    lines.extend([r"\bottomrule", r"\end{tabular}", r"\end{table}"])
    output_path.write_text("\n".join(lines) + "\n", encoding="utf-8")


def _laboratory_ids(laboratories: list[str]) -> dict[str, str]:
    return {laboratory: f"L{index:02d}" for index, laboratory in enumerate(laboratories, start=1)}


def _write_laboratory_counts(audit: dict[str, Any], output_path: Path) -> None:
    counts = {str(key): int(value) for key, value in audit["laboratory_counts"].items()}
    laboratories = sorted(counts)
    ids = _laboratory_ids(laboratories)
    lines = [
        r"\begin{longtable}{llr}",
        r"\caption{Laboratory identifiers and numbers of structure--laboratory observations.}\label{tab:lab-counts}\\",
        r"\toprule",
        r"ID & Laboratory & Observations \\",
        r"\midrule",
        r"\endfirsthead",
        r"\toprule",
        r"ID & Laboratory & Observations \\",
        r"\midrule",
        r"\endhead",
    ]
    for laboratory in laboratories:
        lines.append(
            f"{ids[laboratory]} & {_escape_latex(laboratory)} & {counts[laboratory]:,} \\\\"
        )
    lines.extend([r"\bottomrule", r"\end{longtable}"])
    output_path.write_text("\n".join(lines) + "\n", encoding="utf-8")


def _write_shared_lab_matrix(matrix_path: Path, output_path: Path) -> None:
    matrix = pd.read_csv(matrix_path, index_col=0)
    matrix.index = matrix.index.astype(str)
    matrix.columns = matrix.columns.astype(str)
    laboratories = sorted(set(matrix.index) | set(matrix.columns))
    matrix = matrix.reindex(index=laboratories, columns=laboratories)
    if matrix.isna().any().any():
        raise ValueError("Shared-compound matrix is not square over the laboratory labels.")
    ids = _laboratory_ids(laboratories)
    column_specification = "l" + "r" * len(laboratories)
    header = " & ".join(["ID"] + [ids[laboratory] for laboratory in laboratories]) + r" \\"
    lines = [
        r"\begin{table}[htbp]",
        r"\centering",
        r"\caption{Numbers of shared InChIKey-connectivity groups between every laboratory pair. Laboratory IDs are defined in Table~\ref{tab:lab-counts}; diagonal entries are the numbers of unique connectivity groups within each laboratory.}",
        r"\label{tab:shared-lab-matrix}",
        r"\resizebox{\textwidth}{!}{%",
        f"\\begin{{tabular}}{{{column_specification}}}",
        r"\toprule",
        header,
        r"\midrule",
    ]
    for laboratory in laboratories:
        values = " & ".join(str(int(matrix.loc[laboratory, other])) for other in laboratories)
        lines.append(f"{ids[laboratory]} & {values} \\\\")
    lines.extend(
        [
            r"\bottomrule",
            r"\end{tabular}%",
            r"}",
            r"\end{table}",
        ]
    )
    output_path.write_text("\n".join(lines) + "\n", encoding="utf-8")


def _write_split_table(artifacts_root: Path, output_path: Path) -> None:
    lines = [
        r"\begin{table}[htbp]",
        r"\centering",
        r"\caption{Outer split sizes and leakage checks for all predeclared runs.}",
        r"\label{tab:split-audit}",
        r"\begin{tabular}{lrrrrrr}",
        r"\toprule",
        r"Task & Seed & Development & Test & Test (\%) & Identity overlap & Laboratories \\",
        r"\midrule",
    ]
    for strategy in STRATEGIES:
        for seed in SEEDS:
            payload = _load_json(
                artifacts_root / strategy / f"seed_{seed}" / "split_summary.json"
            )
            laboratories = (
                f"{payload['development_laboratories']}/{payload['test_laboratories']}"
            )
            lines.append(
                f"{STRATEGY_LABELS[strategy]} & {seed} & "
                f"{payload['n_development_rows']:,} & {payload['n_test_rows']:,} & "
                f"{100 * payload['test_fraction']:.1f} & "
                f"{payload['structure_identity_overlap']} & {laboratories} \\\\"
            )
    lines.extend(
        [
            r"\bottomrule",
            r"\end{tabular}",
            r"\end{table}",
        ]
    )
    output_path.write_text("\n".join(lines) + "\n", encoding="utf-8")


def _write_performance_table(neural: pd.DataFrame, output_path: Path) -> None:
    model_order = ("gat", "gcn", "fpnn", "stack_all_plus_descriptors")
    lines = [
        r"\begin{table}[htbp]",
        r"\centering",
        r"\caption{Outer-test performance across three predeclared seeds (mean $\pm$ SD).}",
        r"\label{tab:primary-performance}",
        r"\begin{tabular}{llccc}",
        r"\toprule",
        r"Task & Model & $R^2$ & MAE (min) & RMSE (min) \\",
        r"\midrule",
    ]
    for strategy in STRATEGIES:
        for model in model_order:
            row = neural.loc[
                (neural["strategy"] == strategy) & (neural["model"] == model)
            ].iloc[0]
            lines.append(
                f"{STRATEGY_LABELS[strategy]} & {MODEL_LABELS[model]} & "
                f"{_mean_sd(row, 'r2')} & {_mean_sd(row, 'mae')} & "
                f"{_mean_sd(row, 'rmse')} \\\\"
            )
        if strategy != STRATEGIES[-1]:
            lines.append(r"\addlinespace")
    lines.extend([r"\bottomrule", r"\end{tabular}", r"\end{table}"])
    output_path.write_text("\n".join(lines) + "\n", encoding="utf-8")


def _write_ablation_table(
    neural: pd.DataFrame, classical: pd.DataFrame, output_path: Path
) -> None:
    model_order = (
        "arithmetic_mean",
        "stack_all_base_only",
        "stack_all_plus_descriptors",
        "stack_gat_gcn",
        "stack_gat_fpnn",
        "stack_gcn_fpnn",
        "lab_median",
        "descriptor_only_ridge",
        "fingerprint_no_lab_et",
        "fingerprint_no_lab_plus_lab_affine",
        "fingerprint_only_et",
        "fingerprint_plus_descriptors_et",
    )
    source = pd.concat([neural, classical], ignore_index=True)
    lines = [
        r"\begin{longtable}{llcc}",
        r"\caption{Fixed component ablations and classical baselines (mean $\pm$ SD across seeds).}\label{tab:ablations}\\",
        r"\toprule",
        r"Task & Model & $R^2$ & MAE (min) \\",
        r"\midrule",
        r"\endfirsthead",
        r"\toprule",
        r"Task & Model & $R^2$ & MAE (min) \\",
        r"\midrule",
        r"\endhead",
    ]
    for strategy in STRATEGIES:
        for model in model_order:
            row = source.loc[
                (source["strategy"] == strategy) & (source["model"] == model)
            ]
            if row.empty:
                continue
            record = row.iloc[0]
            lines.append(
                f"{STRATEGY_LABELS[strategy]} & {_escape_latex(MODEL_LABELS[model])} & "
                f"{_mean_sd(record, 'r2')} & {_mean_sd(record, 'mae')} \\\\"
            )
        if strategy != STRATEGIES[-1]:
            lines.append(r"\addlinespace")
    lines.extend([r"\bottomrule", r"\end{longtable}"])
    output_path.write_text("\n".join(lines) + "\n", encoding="utf-8")


def _write_per_lab_table(per_lab: pd.DataFrame, output_path: Path) -> None:
    primary = per_lab.loc[per_lab["model"] == "stack_all_plus_descriptors"].copy()
    grouped = primary.groupby(["strategy", "Lab"], sort=True)
    lines = [
        r"\begin{landscape}",
        r"\begingroup",
        r"\scriptsize",
        r"\renewcommand{\arraystretch}{0.92}",
        r"\setlength{\tabcolsep}{3pt}",
        r"\begin{longtable}{p{1.15in}p{2.2in}rccccc}",
        r"\caption{Per-laboratory full-stack metrics across outer seeds.}\label{tab:per-lab}\\",
        r"\toprule",
        r"Task & Laboratory & $n$ range & MAE & RMSE & Bias & Slope & nMAE \\",
        r"\midrule",
        r"\endfirsthead",
        r"\toprule",
        r"Task & Laboratory & $n$ range & MAE & RMSE & Bias & Slope & nMAE \\",
        r"\midrule",
        r"\endhead",
    ]
    for (strategy, laboratory), frame in grouped:
        n_range = f"{int(frame['n'].min())}--{int(frame['n'].max())}"
        values = []
        for column in ("mae", "rmse", "bias", "calibration_slope", "nmae_by_rt_range"):
            mean = frame[column].mean()
            sd = frame[column].std(ddof=1)
            values.append(f"{_number(mean)} $\\pm$ {_number(sd)}")
        lines.append(
            f"{STRATEGY_LABELS[strategy]} & {_escape_latex(laboratory)} & {n_range} & "
            + " & ".join(values)
            + r" \\"
        )
    lines.extend(
        [
            r"\bottomrule",
            r"\end{longtable}",
            r"\endgroup",
            r"\end{landscape}",
        ]
    )
    output_path.write_text("\n".join(lines) + "\n", encoding="utf-8")


def _write_domain_table(domain: pd.DataFrame, output_path: Path) -> None:
    grouped = domain.groupby(["strategy", "threshold"], sort=True)
    lines = [
        r"\begin{table}[htbp]",
        r"\centering",
        r"\caption{Prospective maximum-Tanimoto threshold sensitivity across outer seeds.}",
        r"\label{tab:domain}",
        r"\begin{tabular}{lccccc}",
        r"\toprule",
        r"Task & Threshold & Coverage & Accepted MAE & Rejected MAE & $\rho$(similarity, $|e|$) \\",
        r"\midrule",
    ]
    for (strategy, threshold), frame in grouped:
        lines.append(
            f"{STRATEGY_LABELS[strategy]} & {threshold:.1f} & "
            f"{_number(frame['accepted_coverage'].mean())} $\\pm$ {_number(frame['accepted_coverage'].std(ddof=1))} & "
            f"{_number(frame['accepted_mae'].mean())} $\\pm$ {_number(frame['accepted_mae'].std(ddof=1))} & "
            f"{_number(frame['rejected_mae'].mean())} $\\pm$ {_number(frame['rejected_mae'].std(ddof=1))} & "
            f"{_number(frame['spearman_similarity_vs_absolute_error'].mean())} \\\\"
        )
    lines.extend([r"\bottomrule", r"\end{tabular}", r"\end{table}"])
    output_path.write_text("\n".join(lines) + "\n", encoding="utf-8")


def _write_paired_table(paired: pd.DataFrame, output_path: Path) -> None:
    selected = paired.loc[
        (paired["reference_model"].isin(["gat", "gcn", "fpnn"]))
        & (paired["metric"] == "mae")
    ].copy()
    lines = [
        r"\begin{table}[htbp]",
        r"\centering",
        r"\caption{Paired connectivity-group bootstrap differences in MAE for the full stack relative to each base model. Negative differences favor the full stack.}",
        r"\label{tab:paired-bootstrap}",
        r"\begin{tabular}{llrr}",
        r"\toprule",
        r"Task & Reference & Seed & Difference (95\% interval), min \\",
        r"\midrule",
    ]
    for _, row in selected.sort_values(["strategy", "reference_model", "seed"]).iterrows():
        lines.append(
            f"{STRATEGY_LABELS[row['strategy']]} & {MODEL_LABELS[row['reference_model']]} & "
            f"{int(row['seed'])} & {_number(row['difference_point'])} "
            f"[{_number(row['ci_low'])}, {_number(row['ci_high'])}] \\\\"
        )
    lines.extend([r"\bottomrule", r"\end{tabular}", r"\end{table}"])
    output_path.write_text("\n".join(lines) + "\n", encoding="utf-8")


def _write_embedding_stability_table(
    embedding_stability: pd.DataFrame, output_path: Path
) -> None:
    lines = [
        r"\begin{table}[htbp]",
        r"\centering",
        r"\caption{Cross-seed stability of learned laboratory geometry. Values are Spearman correlations between vectors of mean foldwise pairwise laboratory distances; the interval gives the minimum and maximum across the three seed pairs.}",
        r"\label{tab:embedding-stability}",
        r"\begin{tabular}{llc}",
        r"\toprule",
        r"Task & Model & Spearman $\rho$ (range) \\",
        r"\midrule",
    ]
    for strategy in STRATEGIES:
        for model in ("gat", "gcn", "fpnn"):
            row = embedding_stability.loc[
                (embedding_stability["strategy"] == strategy)
                & (embedding_stability["model"] == model)
            ]
            if len(row) != 1:
                raise ValueError(
                    f"Expected one embedding-stability row for {strategy}/{model}."
                )
            record = row.iloc[0]
            lines.append(
                f"{STRATEGY_LABELS[strategy]} & {MODEL_LABELS[model]} & "
                f"{_number(record['mean'])} "
                f"[{_number(record['min'])}, {_number(record['max'])}] \\\\" 
            )
        if strategy != STRATEGIES[-1]:
            lines.append(r"\addlinespace")
    lines.extend([r"\bottomrule", r"\end{tabular}", r"\end{table}"])
    output_path.write_text("\n".join(lines) + "\n", encoding="utf-8")


def _write_computational_cost_table(runtime: pd.DataFrame, output_path: Path) -> None:
    lines = [
        r"\begin{table}[htbp]",
        r"\centering",
        r"\caption{Trainable parameter counts and cumulative six-fold training time per outer run. Times are mean $\pm$ SD across three seeds on the hardware reported in the text.}",
        r"\label{tab:computational-cost}",
        r"\begin{tabular}{llrr}",
        r"\toprule",
        r"Task & Model & Parameters & Training time (min) \\",
        r"\midrule",
    ]
    for strategy in STRATEGIES:
        for model in ("gat", "gcn", "fpnn"):
            row = runtime.loc[
                (runtime["strategy"] == strategy) & (runtime["model"] == model)
            ]
            if len(row) != 1:
                raise ValueError(f"Expected one runtime row for {strategy}/{model}.")
            record = row.iloc[0]
            mean_minutes = float(record["training_seconds_mean"]) / 60.0
            sd_minutes = float(record["training_seconds_sd"]) / 60.0
            lines.append(
                f"{STRATEGY_LABELS[strategy]} & {MODEL_LABELS[model]} & "
                f"{int(record['parameter_count']):,} & "
                f"{mean_minutes:.2f} $\\pm$ {sd_minutes:.2f} \\\\" 
            )
        if strategy != STRATEGIES[-1]:
            lines.append(r"\addlinespace")
    lines.extend([r"\bottomrule", r"\end{tabular}", r"\end{table}"])
    output_path.write_text("\n".join(lines) + "\n", encoding="utf-8")


def _write_table_manifest(output_dir: Path) -> None:
    rows = [
        {
            "relative_path": path.name,
            "bytes": path.stat().st_size,
            "sha256": hashlib.sha256(path.read_bytes()).hexdigest(),
        }
        for path in sorted(output_dir.glob("*.tex"))
    ]
    pd.DataFrame(rows).to_csv(output_dir / "TABLE_MANIFEST.csv", index=False)


def main() -> int:
    parser = argparse.ArgumentParser()
    parser.add_argument("--artifacts-root", required=True)
    parser.add_argument("--output-dir", required=True)
    args = parser.parse_args()
    artifacts_root = Path(args.artifacts_root).resolve()
    output_dir = Path(args.output_dir).resolve()
    if output_dir.exists() and any(output_dir.iterdir()):
        raise FileExistsError(f"Refusing nonempty generated-table directory: {output_dir}")
    output_dir.mkdir(parents=True, exist_ok=True)

    summary_dir = artifacts_root / "summary"
    neural = pd.read_csv(summary_dir / "neural_metrics_aggregate.csv")
    classical = pd.read_csv(summary_dir / "classical_metrics_aggregate.csv")
    per_lab = pd.read_csv(summary_dir / "neural_per_lab_by_run.csv")
    domain = pd.read_csv(summary_dir / "prospective_domain_by_run.csv")
    paired = pd.read_csv(summary_dir / "paired_bootstrap_by_run.csv")
    embedding_stability = pd.read_csv(
        summary_dir
        / "embedding_stability"
        / "embedding_stability_aggregate.csv"
    )
    runtime = pd.read_csv(summary_dir / "neural_runtime_aggregate.csv")
    audit = _load_json(artifacts_root / "dataset_audit.json")
    inference_benchmark = _load_json(artifacts_root / "inference_benchmark.json")

    _write_metric_macros(
        neural,
        inference_benchmark,
        output_dir / "results_macros.tex",
    )
    _write_dataset_table(audit, output_dir / "table_dataset_audit.tex")
    _write_laboratory_counts(audit, output_dir / "table_laboratory_counts.tex")
    _write_shared_lab_matrix(
        artifacts_root / "shared_compounds_by_lab.csv",
        output_dir / "table_shared_lab_matrix.tex",
    )
    _write_split_table(artifacts_root, output_dir / "table_split_audit.tex")
    _write_performance_table(neural, output_dir / "table_performance.tex")
    _write_ablation_table(neural, classical, output_dir / "table_ablations.tex")
    _write_per_lab_table(per_lab, output_dir / "table_per_lab.tex")
    _write_domain_table(domain, output_dir / "table_domain.tex")
    _write_paired_table(paired, output_dir / "table_paired_bootstrap.tex")
    _write_embedding_stability_table(
        embedding_stability,
        output_dir / "table_embedding_stability.tex",
    )
    _write_computational_cost_table(
        runtime,
        output_dir / "table_computational_cost.tex",
    )
    _write_table_manifest(output_dir)
    print(f"Wrote revision macros and LaTeX tables to: {output_dir}")
    return 0


if __name__ == "__main__":
    raise SystemExit(main())