"""Register eval-pack sources, generate corpus text, and ingest into Postgres.

Aligns the knowledge base with ``generate_nsclc_eval_pack.py`` SOURCE_SET (14 sources).
Does **not** modify integration-test fixtures (*-RET-*, *-TEST-*).

Steps (default: all):
  1. Write ``data/eval_corpus/*.txt`` + ``manifest.json``
  2. Register ``sources`` / ``source_versions`` in Postgres
  3. Run chunk + embed ingest via ``run_ingest_pipeline.py``

Usage:
    python3 scripts/setup_eval_corpus.py
    python3 scripts/setup_eval_corpus.py --no-embed
    python3 scripts/setup_eval_corpus.py --write-only
"""

from __future__ import annotations

import argparse
import json
import os
import subprocess
import sys
from dataclasses import dataclass
from datetime import UTC, date, datetime
from pathlib import Path

REPO_ROOT = Path(__file__).resolve().parent.parent
CORPUS_DIR = REPO_ROOT / "data" / "eval_corpus"
MANIFEST_PATH = CORPUS_DIR / "manifest.json"

_env_file = REPO_ROOT / ".env"
if _env_file.exists():
    for raw_line in _env_file.read_text().splitlines():
        line = raw_line.strip()
        if not line or line.startswith("#") or "=" not in line:
            continue
        key, value = line.split("=", 1)
        os.environ.setdefault(key.strip(), value.strip())

import psycopg  # noqa: E402

DSN = os.getenv(
    "AKS_DATABASE_URL",
    "postgresql+psycopg://mobcoderid-296@localhost/ai_knowledge_spine",
).replace("postgresql+psycopg://", "postgresql://", 1)

NOW = datetime.now(UTC)
TODAY = date.today()
THERAPY = "NSCLC"
GEO = "EU / EMA"


@dataclass(frozen=True)
class SourceSpec:
    source_id: str
    version_id: str
    source_class: str  # DB enum name: LBL, DOC_CSR, SOP_MED, ...
    title: str
    molecule: str | None
    sensitivity: str  # EXTERNAL | INTERNAL_ONLY
    audience: list[str]


def _molecule_from_id(source_id: str) -> str | None:
    if "DRUGA" in source_id or source_id.endswith("DRUGA-2024"):
        return "DRUG-A"
    if "DRUGB" in source_id:
        return "DRUG-B"
    if "DRUGC" in source_id:
        return "DRUG-C"
    return None


def _class_from_prefix(source_id: str) -> str:
    if source_id.startswith("LBL-"):
        return "LBL"
    if source_id.startswith("DOC-CSR-"):
        return "DOC_CSR"
    if source_id.startswith("SOP-MED-"):
        return "SOP_MED"
    if source_id.startswith("GDL-"):
        return "GDL"
    if source_id.startswith("RMP-"):
        return "RMP"
    if source_id.startswith("PK-SUMMARY-"):
        return "PK_SUMMARY"
    if source_id.startswith("MI-FAQ-"):
        return "MI_FAQ"
    if source_id.startswith("MED-AFF-"):
        return "MED_AFF"
    if source_id.startswith("TREATMENT-ALGO-"):
        return "TREATMENT_ALGO"
    if source_id.startswith("SME-NOTE-"):
        return "SME_NOTE"
    return "LBL"


def catalog() -> list[SourceSpec]:
    specs: list[SourceSpec] = []
    for source_id in [
        "DOC-CSR-NSCLC-001",
        "DOC-CSR-NSCLC-014",
        "SOP-MED-NSCLC-010",
        "SOP-MED-NSCLC-022",
        "GDL-NSCLC-2025-03",
        "LBL-NSCLC-DRUGA-EMA-2024",
        "LBL-NSCLC-DRUGB-EMA-2023",
        "LBL-NSCLC-DRUGC-EMA-2024",
        "MI-FAQ-NSCLC-021",
        "MED-AFF-NSCLC-PLAYBOOK-008",
        "RMP-NSCLC-DRUGA-2024",
        "SME-NOTE-NSCLC-017",
        "PK-SUMMARY-NSCLC-005",
        "TREATMENT-ALGO-NSCLC-2025-02",
    ]:
        slug = source_id.lower().replace("/", "-")[:40]
        version_id = f"ver-{slug}-1"
        mol = _molecule_from_id(source_id)
        cls = _class_from_prefix(source_id)
        internal = cls in {"SOP_MED", "MED_AFF", "TREATMENT_ALGO", "SME_NOTE"}
        specs.append(
            SourceSpec(
                source_id=source_id,
                version_id=version_id,
                source_class=cls,
                title=f"Synthetic eval corpus — {source_id}",
                molecule=mol,
                sensitivity="INTERNAL_ONLY" if internal else "EXTERNAL",
                audience=["Internal"] if internal and cls != "SOP_MED" else ["HCP", "Internal"],
            )
        )
    return specs


def _drug_label(mol: str | None) -> str:
    return mol or "the authorised product"


def generate_document(spec: SourceSpec) -> str:
    drug = _drug_label(spec.molecule)
    pages: list[str] = []
    p = 1

    def section(heading: str, paragraphs: list[str]) -> None:
        nonlocal p, pages
        pages.append(f"[[PAGE:{p}]]")
        pages.append(heading)
        pages.extend(paragraphs)
        p += 1

    if spec.source_class == "LBL":
        section(
            "1 INDICATIONS AND USAGE",
            [
                f"{drug} is indicated as monotherapy for adults with locally advanced or metastatic "
                "non-small cell lung cancer (NSCLC) harbouring activating EGFR mutations in the "
                "first-line setting under the approved EU label.",
                "Use outside EGFR-positive first-line metastatic NSCLC is not authorised. "
                "Adjuvant or post-resection use must not be presented as approved.",
            ],
        )
        section(
            "2 POSOLOGY AND METHOD OF ADMINISTRATION",
            [
                f"The recommended dose of {drug} is 80 mg once daily, orally, with or without food. "
                "Treatment continues until disease progression or unacceptable toxicity.",
                "Dose reduction to 40 mg once daily is permitted only within approved EU label "
                "boundaries for documented toxicity. Missed doses must not be doubled.",
            ],
        )
        section(
            "4 CONTRAINDICATIONS",
            [
                f"{drug} is contraindicated in patients with hypersensitivity to the active substance "
                "or excipients.",
            ],
        )
        section(
            "4.4 SPECIAL WARNINGS AND PRECAUTIONS FOR USE",
            [
                "Monitor for interstitial lung disease (ILD): new dyspnoea, cough, or fever require "
                "urgent assessment. Grade 3 or higher ILD requires permanent discontinuation.",
                "Baseline and periodic hepatic function and QT interval assessment is recommended. "
                "Use caution with QT-prolonging co-medications.",
            ],
        )
        section(
            "4.8 UNDESIRABLE EFFECTS",
            [
                "Common adverse reactions include rash, diarrhoea, paronychia, stomatitis, and "
                "decreased appetite. Serious reactions include ILD and severe cutaneous adverse events.",
            ],
        )
    elif spec.source_class == "DOC_CSR":
        section(
            "OBJECTIVE",
            [
                f"This clinical study report evaluates efficacy and safety of {drug} versus "
                "standard-of-care chemotherapy in treatment-naïve EGFR-positive metastatic NSCLC.",
            ],
        )
        section(
            "ENDPOINTS",
            [
                "Primary endpoint: progression-free survival by blinded independent central review. "
                "Secondary: overall survival, objective response rate (RECIST 1.1), duration of response, "
                "and treatment-emergent adverse events.",
            ],
        )
        section(
            "RESULTS",
            [
                f"{drug} improved progression-free survival in EGFR-positive NSCLC versus chemotherapy "
                "with a clinically meaningful hazard ratio favouring study treatment.",
                f"Overall response rate and duration of response were higher in the {drug} arm. "
                "Safety was consistent with EGFR-targeted therapy including ILD and QT prolongation.",
            ],
        )
        section(
            "LIMITATIONS",
            [
                "Population restricted to confirmed EGFR activating mutations. "
                "Findings must not be extrapolated beyond approved EU label scope.",
            ],
        )
    elif spec.source_class == "SOP_MED":
        section(
            "PURPOSE",
            [
                f"Govern medical information responses for {drug} in EU NSCLC, defining on-label "
                "versus medical affairs review boundaries.",
            ],
        )
        section(
            "DOSING GUIDANCE",
            [
                f"On-label dosing inquiries use approved EU label content: 80 mg once daily first-line "
                f"metastatic NSCLC for {drug}. Dose reductions must remain within approved EU label boundaries.",
                "Inquiries probing off-label dosing or regimens route to SME review.",
            ],
        )
        section(
            "MEDICAL RESPONSE RULES",
            [
                "Label is primary for indication, dose, and contraindications. "
                "Conflicts resolve in favour of the label. Low-confidence or policy-sensitive items route to SME.",
            ],
        )
    elif spec.source_class == "GDL":
        section(
            "RECOMMENDATIONS",
            [
                f"For EGFR-positive metastatic NSCLC, {drug} may be considered in first-line per "
                "current EU practice when aligned with the approved label.",
            ],
        )
        section(
            "BIOMARKER TESTING",
            [
                "Validated EGFR mutation testing should be completed before treatment selection. "
                "Later-line mutation-specific decisions require label alignment.",
            ],
        )
        section(
            "FIRST-LINE THERAPY",
            [
                "Separate labeled first-line metastatic use from adjuvant or post-resection settings. "
                "Do not imply non-labeled lines are approved.",
            ],
        )
    elif spec.source_class == "RMP":
        section(
            "IMPORTANT IDENTIFIED RISKS",
            [
                f"For {drug}, important risks include interstitial lung disease, QT prolongation, "
                "hepatotoxicity, and severe cutaneous adverse reactions.",
            ],
        )
        section(
            "PHARMACOVIGILANCE MEASURES",
            [
                "Healthcare professionals should report suspected adverse reactions per local requirements. "
                "ILD symptoms require prompt evaluation and label-concordant management.",
            ],
        )
    elif spec.source_class == "PK_SUMMARY":
        section(
            "DOSE-EXPOSURE RELATIONSHIP",
            [
                f"{drug} 80 mg once daily achieves target exposure in the approved population. "
                "Renal impairment requires cautious clinical judgement; avoid unsupported fixed-dose rules.",
            ],
        )
        section(
            "ADMINISTRATION NOTES",
            [
                "Oral administration with or without food. Dose modifications follow approved label steps only.",
            ],
        )
    elif spec.source_class == "MI_FAQ":
        section(
            "FREQUENTLY ASKED QUESTIONS",
            [
                f"What is the approved starting dose for {drug}? 80 mg once daily in first-line metastatic "
                "EGFR-positive NSCLC within EU label boundaries.",
            ],
        )
        section(
            "MISSED DOSE",
            [
                "Patient-facing answers must use only approved missed-dose guidance and avoid improvised "
                "rescue instructions; advise clinician follow-up when uncertain.",
            ],
        )
    elif spec.source_class == "MED_AFF":
        section(
            "PLAYBOOK OVERVIEW",
            [
                f"Medical affairs rollout for {drug} in EU NSCLC: align field medical with label-first messaging.",
            ],
        )
        section(
            "BOUNDARY CASES",
            [
                "Adjuvant and post-resection discussions remain outside approved scope unless label updates. "
                "Keep DRUG-B and DRUG-C narratives separate from DRUG-A.",
            ],
        )
    elif spec.source_class == "TREATMENT_ALGO":
        section(
            "DECISION LOGIC",
            [
                "Step 1: confirm EGFR activating mutation. Step 2: if first-line metastatic NSCLC, "
                f"consider {drug} when within approved EU label criteria.",
            ],
        )
        section(
            "EXCLUSIONS",
            [
                "Do not route adjuvant-only pathways into first-line metastatic approval logic.",
            ],
        )
    elif spec.source_class == "SME_NOTE":
        section(
            "EXPERT REVIEW",
            [
                f"SME interpretation: {drug} PFS benefit in EGFR-positive NSCLC is clinically relevant "
                "but must be communicated within approved boundaries without superiority overclaim.",
            ],
        )
        section(
            "COMPARISON DISCIPLINE",
            [
                "Comparative statements require explicit label or CSR grounding. Avoid cure-adjacent language.",
            ],
        )
    else:
        section("CONTENT", [f"Controlled content for {spec.source_id} regarding {drug} in NSCLC."])

    return "\n\n".join(pages) + "\n"


def write_corpus_files(specs: list[SourceSpec]) -> None:
    CORPUS_DIR.mkdir(parents=True, exist_ok=True)
    manifest_sources = []
    for spec in specs:
        text_file = f"{spec.source_id}.txt"
        path = CORPUS_DIR / text_file
        path.write_text(generate_document(spec), encoding="utf-8")
        chunker_class = {
            "LBL": "LBL",
            "DOC_CSR": "DOC-CSR",
            "SOP_MED": "SOP-MED",
            "GDL": "GDL",
            "RMP": "RMP",
            "PK_SUMMARY": "PK-SUMMARY",
            "MI_FAQ": "MI-FAQ",
            "MED_AFF": "MED-AFF",
            "TREATMENT_ALGO": "TREATMENT-ALGO",
            "SME_NOTE": "SME-NOTE",
        }[spec.source_class]
        manifest_sources.append(
            {
                "source_id": spec.source_id,
                "version_id": spec.version_id,
                "source_class": chunker_class,
                "therapy_area": THERAPY,
                "geography": GEO,
                "audience": spec.audience,
                "text_file": text_file,
            }
        )

    MANIFEST_PATH.write_text(json.dumps({"sources": manifest_sources}, indent=2), encoding="utf-8")
    print(f"Wrote {len(specs)} text files and {MANIFEST_PATH}")


def register_sources(specs: list[SourceSpec]) -> None:
    conn = psycopg.connect(DSN)
    try:
        with conn:
            with conn.cursor() as cur:
                for spec in specs:
                    cur.execute("SELECT 1 FROM sources WHERE source_id = %s", (spec.source_id,))
                    if cur.fetchone() is None:
                        cur.execute(
                            """
                            INSERT INTO sources (
                                source_id, source_class, title, therapy_area, molecule,
                                geography, audience_scope, sensitivity_class, approval_state,
                                current_version_id, hygiene_status, created_at, updated_at
                            ) VALUES (
                                %s, %s, %s, %s, %s, %s, %s::json, %s, 'APPROVED',
                                NULL, 'active', %s, %s
                            )
                            """,
                            (
                                spec.source_id,
                                spec.source_class,
                                spec.title,
                                THERAPY,
                                spec.molecule,
                                GEO,
                                json.dumps(spec.audience),
                                spec.sensitivity,
                                NOW,
                                NOW,
                            ),
                        )
                    cur.execute(
                        "SELECT 1 FROM source_versions WHERE version_id = %s",
                        (spec.version_id,),
                    )
                    if cur.fetchone() is None:
                        cur.execute(
                            """
                            INSERT INTO source_versions (
                                version_id, source_id, version_label, approval_state,
                                approval_date, is_latest_approved, is_superseded, created_at
                            ) VALUES (%s, %s, 'v1', 'APPROVED', %s, TRUE, FALSE, %s)
                            """,
                            (spec.version_id, spec.source_id, TODAY, NOW),
                        )
                    cur.execute(
                        "UPDATE sources SET current_version_id = %s, updated_at = %s WHERE source_id = %s",
                        (spec.version_id, NOW, spec.source_id),
                    )
        print(f"Registered {len(specs)} eval-pack sources in Postgres.")
    finally:
        conn.close()


def run_ingest(*, embed: bool) -> None:
    cmd = [
        sys.executable,
        str(REPO_ROOT / "scripts" / "run_ingest_pipeline.py"),
        "--manifest",
        str(MANIFEST_PATH),
    ]
    if not embed:
        cmd.append("--no-embed")
    subprocess.run(cmd, check=True, cwd=str(REPO_ROOT))


def verify() -> None:
    conn = psycopg.connect(DSN)
    try:
        with conn.cursor() as cur:
            cur.execute("SELECT COUNT(*) FROM sources")
            print(f"sources: {cur.fetchone()[0]}")
            cur.execute("SELECT COUNT(*) FROM chunks")
            print(f"chunks: {cur.fetchone()[0]}")
            cur.execute("SELECT COUNT(*) FROM chunk_embeddings")
            print(f"chunk_embeddings: {cur.fetchone()[0]}")
            cur.execute(
                "SELECT COUNT(*) FROM chunks WHERE source_id LIKE '%RET%' OR source_id LIKE '%TEST%'"
            )
            print(f"fixture chunks (RET/TEST): {cur.fetchone()[0]}")
            cur.execute(
                """
                SELECT source_id, COUNT(*) FROM chunks
                WHERE source_id NOT LIKE '%RET%' AND source_id NOT LIKE '%TEST%'
                GROUP BY source_id ORDER BY source_id
                """
            )
            print("eval corpus chunks per source:")
            for row in cur.fetchall():
                print(f"  {row[0]}: {row[1]}")
    finally:
        conn.close()


def main() -> int:
    parser = argparse.ArgumentParser(description=__doc__)
    parser.add_argument("--write-only", action="store_true", help="Only generate text + manifest")
    parser.add_argument("--no-register", action="store_true", help="Skip Postgres registration")
    parser.add_argument("--no-ingest", action="store_true", help="Skip ingest pipeline")
    parser.add_argument("--no-embed", action="store_true", help="Chunk without Ollama embeddings")
    parser.add_argument("--no-seed-claims", action="store_true", help="Skip claim + assessment seeding")
    args = parser.parse_args()

    specs = catalog()
    write_corpus_files(specs)
    if args.write_only:
        return 0
    if not args.no_register:
        register_sources(specs)
    if not args.no_ingest:
        run_ingest(embed=not args.no_embed)
    if not args.no_seed_claims and not args.no_register and not args.no_ingest:
        subprocess.run(
            [sys.executable, str(REPO_ROOT / "scripts" / "seed_eval_claims.py")],
            check=True,
            cwd=str(REPO_ROOT),
        )
        subprocess.run(
            [sys.executable, str(REPO_ROOT / "scripts" / "seed_eval_graph_entities.py")],
            check=True,
            cwd=str(REPO_ROOT),
        )
    verify()
    return 0


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