"""Showcase tinymfv's plotting on a real steering run (the dogfood before publishing the lib).

Consumes a steering-lite `run_allinstr_showcase.py` output dir (one calibrated
activation-steering vector administered across every instrument over a signed
c-sweep) and renders the SAME two figures for every instrument, uniformly:

  - map  : ipsative culture map (PCA), AI coherent +/-c path vs the human cloud.
  - range: per-factor range, AI base + coherent +/-c path vs the human society strip.

Ordinal instruments (mfq2/big5/16pf/humor_styles) read <name>_profiles.csv; nominal
MFV reads mfv.json and is projected into z-scored relative-emphasis space (its
logit-violation units cannot share a raw axis with 1-5 wrongness), but it goes
through the same plot_ipsative_pca / plot_range and yields the same two figures.

cs are SIGNED multipliers of the calibrated coefficient C (0 = base). The public
README plots show the coherent path: c=0 plus each +/-c row whose tinymfv answer mass
stays above the requested fraction of base. Incoherent rows are dropped, not drawn hollow.

  uv run python scripts/plot_steer_showcase.py \
    --run-dir ../steering-lite/outputs/allinstr_qwen35_4b --out docs/img/showcase
"""
from __future__ import annotations

import argparse
import copy
import csv
import json
from pathlib import Path
from types import SimpleNamespace

import matplotlib
matplotlib.use("Agg")
import matplotlib.pyplot as plt
import numpy as np

import tinymfv as T
from tinymfv import get_instrument

ORDINAL = ["mfq2", "big5", "16pf", "humor_styles"]


def _frac(x, scale_max: int) -> np.ndarray:
    return (np.asarray(x, float) - 1) / (scale_max - 1)


def read_human_csv(path: str) -> dict[tuple[str, str], float]:
    """{(country, foundation): mean} from a tinymfv human_<instrument>.csv."""
    out: dict[tuple[str, str], float] = {}
    with open(path, newline="") as fh:
        for r in csv.DictReader(fh):
            out[(r["country"], r["foundation"])] = float(r["mean"])
    return out


def human_matrix(instr) -> tuple[list[str], np.ndarray]:
    """(countries, M[countries x factors] as 0-1 fraction). Mirrors mft_honesty.maps.human_matrix."""
    dims = instr.dimensions
    h = read_human_csv(instr.human_csv)
    countries = sorted({c for (c, _f) in h})
    raw = np.array([[h[(c, f)] for f in dims] for c in countries])
    return countries, _frac(raw, instr.human_scale_max)


def human_haze(instr, n_per_country: int = 200, seed: int = 0) -> np.ndarray:
    """Synthetic individual-respondent cloud (n x K, 0-1 fraction) for instruments that ship only
    society-level stats (big5/16pf/humor: no raw per-person data like mfq2's Atari file). For each
    (country, factor) we resample n Normal(mean, sd) draws from the published country mean+sd, so the
    cloud carries BOTH between-country (different means) and within-country (sd) human spread. Caveat:
    factors are drawn independently, so this marginal resample loses the cross-factor correlation a
    real respondent matrix has -- it is a backdrop envelope, not a covariance estimate, and is NOT
    used as the PCA basis (that stays the society means M)."""
    dims = instr.dimensions
    rng = np.random.default_rng(seed)
    stats: dict[tuple[str, str], tuple[float, float]] = {}
    with open(instr.human_csv, newline="") as fh:
        for r in csv.DictReader(fh):
            stats[(r["country"], r["foundation"])] = (float(r["mean"]), float(r["sd"]))
    countries = sorted({c for (c, _f) in stats})
    blocks = []
    for c in countries:
        cols = [rng.normal(stats[(c, f)][0], stats[(c, f)][1], n_per_country) for f in dims]
        blocks.append(np.clip(np.stack(cols, axis=1), 1.0, instr.human_scale_max))
    return _frac(np.concatenate(blocks, axis=0), instr.human_scale_max)


def human_strip(instr) -> dict[str, list[tuple[str, float]]]:
    """{factor: [(country, mean_on_model_scale)]}. Human 1-H rescaled to model 1-M for the range."""
    h = read_human_csv(instr.human_csv)
    H, M = instr.human_scale_max, instr.scale_max
    def rescale(v: float) -> float:
        return 1.0 + (v - 1.0) / (H - 1) * (M - 1) if H != M else v
    strip: dict[str, list[tuple[str, float]]] = {}
    for f in instr.dimensions:
        strip[f] = sorted(((c, rescale(v)) for (c, ff), v in h.items() if ff == f),
                          key=lambda t: t[1])
    return strip


def read_profiles(run_dir: Path, name: str, dims: list[str], value_col: str = "mean"
                  ) -> tuple[dict[float, np.ndarray], dict[float, float]]:
    """({c: profile-vector in factor order}, {c: pmass}) from <name>_profiles.csv. `c` is the signed
    multiplier of calibrated C (0 = base); a single-multiplier run yields just {-1, 0, +1}.
    value_col selects the readout: 'mean' = E (human-comparable, for the map/range vs human band);
    'C' = the rank-centered logit contrast (the steer-legible signal, for the steer-effect plot)."""
    by_c: dict[float, dict[str, float]] = {}
    pmass: dict[float, float] = {}
    with open(run_dir / f"{name}_profiles.csv", newline="") as fh:
        for r in csv.DictReader(fh):
            c = float(r["c"])
            by_c.setdefault(c, {})[r["foundation"]] = float(r[value_col])
            pmass[c] = float(r["pmass"])
    return {c: np.array([d[f] for f in dims]) for c, d in by_c.items()}, pmass


def coherent_prefix_cs(cs: list[float], pmass_ratio: dict[float, float], coherence_frac: float) -> list[float]:
    """c=0 plus each signed arm until answer mass first falls below the base-relative floor."""
    kept = [0.0]
    for side in (1.0, -1.0):
        for c in sorted([c for c in cs if np.sign(c) == side], key=abs):
            if pmass_ratio[c] <= coherence_frac:
                break
            kept.append(c)
    return sorted(kept)


def shared_pmass_ratio(run_dir: Path, names: list[str]) -> dict[float, float]:
    """Worst base-relative answer mass across the survey evals, keyed by signed calibrated multiplier."""
    pmasses: list[dict[float, float]] = []
    for name in names:
        instr = get_instrument(name)
        _, pmass = read_profiles(run_dir, name, instr.dimensions)
        pmasses.append(pmass)
    cs = sorted(set.intersection(*(set(p) for p in pmasses)))
    return {c: min(p[c] / p[0.0] for p in pmasses) for c in cs}


def plot_ordinal(run_dir: Path, out: Path, name: str, vec_label: str, C: float,
                 coh_cs: list[float]) -> list[Path]:
    instr = copy.copy(get_instrument(name))
    if name == "mfq2":
        instr.display = "MFQ-2 survey"
    dims = instr.dimensions
    prof_c, _pmass = read_profiles(run_dir, name, dims)
    base = prof_c[0.0]
    pos_c = max(c for c in coh_cs if c > 0.0)
    neg_c = min(c for c in coh_cs if c < 0.0)
    pos = prof_c[pos_c]
    neg = prof_c[neg_c]
    humans = human_strip(instr)
    prof = prof_c

    countries, Mfrac = human_matrix(instr)
    labels = ("base (c=0)", f"c={pos_c:+g}", f"c={neg_c:+g}")
    # mfq2 has per-respondent Atari data -> scatter the REAL individual cloud behind the societies AND
    # fit the ipsative PCA on it (better-conditioned, the true envelope). Other instruments have no raw
    # per-person data, so scatter a marginal resample from each country's published mean+sd as the haze
    # while keeping the PCA basis on the society means M.
    if name == "mfq2":
        respondents, haze = T.maps.respondent_profiles(dims, instr.scale_max), None
    else:
        respondents, haze = None, human_haze(instr)
    traj = {c: _frac(prof_c[c], instr.scale_max) for c in coh_cs}
    figm = T.maps.plot_ipsative_pca(instr, dims, countries, Mfrac,
                                    _frac(base, instr.scale_max), _frac(pos, instr.scale_max),
                                    _frac(neg, instr.scale_max), respondents=respondents, haze=haze,
                                    traj=traj, labels=labels)
    figm.axes[0].set_title(f"{instr.display}: humans vs LLMs steered for {vec_label}", fontsize=10)
    paths = [T.maps.save_both(figm, out / name, "map_pca_ipsative")]
    plt.close(figm)

    prof_plot = {c: prof_c[c] for c in coh_cs}
    figr = T.maps.plot_range(instr, dims, coh_cs, prof_plot, humans, None, vec_label)
    paths.append(T.maps.save_both(figr, out / name, "range"))
    plt.close(figr)
    return paths


def _zscore(v: np.ndarray) -> np.ndarray:
    """Relative emphasis: centre and scale a profile across foundations, so a logit profile (model)
    and a 1-5 wrongness profile (human cultures) are comparable by PATTERN regardless of units."""
    return (v - v.mean()) / (v.std() + 1e-9)


def read_human_mfv() -> tuple[list[str], dict[str, dict[str, float]]]:
    """(countries, {country: {foundation: mean_1to5}}) from the bundled MFV human norms.
    JimenezLeal2025 (LatAm) + Yamada2025 (MFV-J): 5 countries x 6 foundations (no Social Norms)."""
    path = T.maps.DATA / "human" / "mfv_country_factors.csv"
    by_country: dict[str, dict[str, float]] = {}
    with open(path, newline="") as fh:
        for r in csv.DictReader(fh):
            by_country.setdefault(r["country"], {})[r["foundation"]] = float(r["mean"])
    return sorted(by_country), by_country

def read_mfv_profiles(run_dir: Path) -> tuple[list[str], dict[float, np.ndarray], dict[float, float]]:
    rows = list(csv.DictReader((run_dir / "mfv_profiles.csv").open()))
    foundation_order = []
    for r in rows:
        if r["foundation"] not in foundation_order:
            foundation_order.append(r["foundation"])
    countries, human = read_human_mfv()
    hfounds = set(next(iter(human.values())))
    founds = [f for f in foundation_order if f.lower() in hfounds]
    dropped = [f for f in foundation_order if f.lower() not in hfounds]
    assert dropped == ["Social Norms"], f"unexpected MFV foundations without a human norm: {dropped}"
    by_c: dict[float, dict[str, float]] = {}
    pmass: dict[float, float] = {}
    for r in rows:
        c = float(r["c"])
        by_c.setdefault(c, {})[r["foundation"]] = float(r["mean"])
        pmass[c] = float(r["pmass"])
    prof = {c: _zscore(np.array([vals[f] for f in founds])) for c, vals in by_c.items()}
    return founds, prof, pmass


def _mfv_zspace(run_dir: Path):
    """Shared MFV adapter -> z-scored relative-emphasis profiles + human MFV culture matrix."""
    founds, prof, pmass = read_mfv_profiles(run_dir)
    countries, human = read_human_mfv()
    fl = [f.lower() for f in founds]
    M = np.array([_zscore(np.array([human[c][f] for f in fl])) for c in countries])
    return founds, countries, M, prof, pmass


# MFV has no ordinal Instrument (it goes through evaluate_multibool, not administer), but the shared
# plotters only read .name/.display off it -- a shim supplies those. The y-values are z-scores, not a
# 1-M scale, so it carries no scale_max and the range passes its own ylabel.
_MFV_INSTR = SimpleNamespace(name="mfv", display="MFV vignettes")
_MFV_YLABEL = "relative emphasis  (z across foundations)"


def plot_mfv_map(run_dir: Path, out: Path, vec_label: str, C: float, coh_cs: list[float]) -> Path:
    """MFV ipsative culture map via the SAME plot_ipsative_pca the ordinal instruments use, in the
    z-scored relative-emphasis space (logit-violation and 1-5 wrongness cannot share a raw axis).
    Red/blue endpoint points show where the steer moves the AI among human cultures."""
    founds, countries, M, prof, _pmass = _mfv_zspace(run_dir)
    pos_c = max(c for c in coh_cs if c > 0.0)
    neg_c = min(c for c in coh_cs if c < 0.0)
    labels = ("base (c=0)", f"c={pos_c:+g}", f"c={neg_c:+g}")
    traj = {c: prof[c] for c in coh_cs}
    fig = T.maps.plot_ipsative_pca(_MFV_INSTR, founds, countries, M, prof[0.0], prof[pos_c], prof[neg_c],
                                   traj=traj, labels=labels)
    fig.axes[0].set_title(f"MFV vignettes: humans vs LLMs steered for {vec_label}", fontsize=10)
    path = T.maps.save_both(fig, out / "mfv", "map_pca_ipsative")
    plt.close(fig)
    return path


def plot_mfv_range(run_dir: Path, out: Path, vec_label: str, C: float, coh_cs: list[float]) -> Path:
    """MFV range via the SAME plot_range the ordinal instruments use, in z relative-emphasis space."""
    founds, countries, M, prof, _pmass = _mfv_zspace(run_dir)
    humans = {f: sorted(((countries[ci], float(M[ci, fi])) for ci in range(len(countries))), key=lambda t: t[1])
              for fi, f in enumerate(founds)}
    fig = T.maps.plot_range(_MFV_INSTR, founds, coh_cs, {c: prof[c] for c in coh_cs},
                            humans, None, vec_label, ylabel=_MFV_YLABEL)
    path = T.maps.save_both(fig, out / "mfv", "range")
    plt.close(fig)
    return path


def main() -> None:
    ap = argparse.ArgumentParser()
    ap.add_argument("--run-dir", type=Path, required=True)
    ap.add_argument("--out", type=Path, default=Path("docs/img/showcase"))
    ap.add_argument("--vec-label", default=None,
                    help="short human-readable steering direction for plot titles")
    ap.add_argument("--coherence-frac", type=float, default=0.99,
                    help="keep c rows whose pmass is above this fraction of base")
    args = ap.parse_args()
    summary = json.loads((args.run_dir / "summary.json").read_text())
    C = float(summary["calibrated_C"])
    method = summary["method"]
    vec_label = args.vec_label or summary.get("vec_label", "-Authority")
    args.out.mkdir(parents=True, exist_ok=True)

    written: list[str] = []
    ordinal_names = [name for name in ORDINAL if (args.run_dir / f"{name}_profiles.csv").exists()]
    pmass_ratio = shared_pmass_ratio(args.run_dir, ordinal_names)
    if (args.run_dir / "mfv_profiles.csv").exists():
        _founds, _prof, mfv_pmass = read_mfv_profiles(args.run_dir)
        for c, pm in mfv_pmass.items():
            pmass_ratio[c] = min(pmass_ratio[c], pm / mfv_pmass[0.0])
    coh_cs = coherent_prefix_cs(sorted(pmass_ratio), pmass_ratio, args.coherence_frac)
    print(f"shared coherent c values at {args.coherence_frac:.2%} base answer mass: {coh_cs}")
    for name in ordinal_names:
        written += [str(p) for p in plot_ordinal(args.run_dir, args.out, name, vec_label, C, coh_cs)]
    if (args.run_dir / "mfv_profiles.csv").exists():
        written.append(str(plot_mfv_map(args.run_dir, args.out, vec_label, C, coh_cs)))    # shared ipsative map (z-space)
        written.append(str(plot_mfv_range(args.run_dir, args.out, vec_label, C, coh_cs)))  # shared range (z-space)
    print(f"wrote {len(written)} figures under {args.out}:")
    for w in written:
        print(" ", w)


if __name__ == "__main__":
    main()