# Copyright (c) 2026, Frappe Technologies Pvt. Ltd. and contributors
# For license information, please see license.txt

"""Background worker + the single run-writer.

``run_enrichment`` is the enqueued job: it runs the pipeline (streaming progress
over realtime), writes a ``CRM Enrichment Run`` history record, applies the mapper
to the origin document, and publishes a terminal event. It NEVER raises to the
worker -- every failure is recorded on the Run, logged via ``frappe.log_error`` and
reported over realtime.

``write_run`` is the ONLY place that persists run history, so the storage choice
(standalone Run doctype today) stays swappable.
"""

from __future__ import annotations

import frappe
from frappe.utils.telemetry import capture

from .config import _setting, auto_enrich_enabled_for, get_config, get_settings
from .mapper import apply_to_document
from .pipeline import PROGRESS_STEPS
from .pipeline import run as run_pipeline

# Realtime event the frontend (Phase 6) subscribes to.
PROGRESS_EVENT = "domain_enrichment_progress"

# Total number of pipeline progress steps (mirrors pipeline.PROGRESS_STEPS).
TOTAL_STEPS = len(PROGRESS_STEPS)


def _publish(reference_doctype, reference_name, status, message="", step=0, payload=None, user=None):
	"""Emit a single progress/terminal event. Mirrors crm/api/whatsapp.py shape:
	always carries the reference, plus step/total/message/status and an optional
	payload (terminal events put filled_fields/notes/result.flat() in the payload).
	Never raises -- realtime is best-effort."""
	try:
		frappe.publish_realtime(
			PROGRESS_EVENT,
			{
				"reference_doctype": reference_doctype,
				"reference_name": reference_name,
				"step": step,
				"total": TOTAL_STEPS,
				"message": message,
				"status": status,
				"payload": payload or {},
			},
			user=user,
		)
	except Exception:
		pass


def write_run(
	reference_doctype: str,
	reference_name: str,
	website: str,
	status: str,
	result=None,
	started_on=None,
	notes: str = "",
):
	"""Persist exactly one ``CRM Enrichment Run`` from an ``EnrichmentResult``.

	The single point of run-history writing -- storage stays swappable behind it.
	When ``result`` is given the summary fields + ``raw_json`` (full ``to_dict()``)
	are populated; otherwise a bare Run (status/website) is written.
	"""
	doc = frappe.new_doc("CRM Enrichment Run")
	doc.reference_doctype = reference_doctype
	doc.reference_name = reference_name
	doc.source_website = website
	doc.status = status
	doc.started_on = started_on or frappe.utils.now_datetime()
	if status in ("Completed", "Failed"):
		doc.finished_on = frappe.utils.now_datetime()
	if notes:
		doc.notes = notes

	if result is not None:
		# extract_social_profiles pre-seeds an empty entry per configured rule; only
		# summarise the networks that were actually found.
		social = ", ".join(sorted(k for k, v in result.social_profiles.items() if v.value))
		doc.company_name = result.company_name.value or ""
		doc.industry = result.industry.value or ""
		doc.industry_confidence = result.industry_confidence or 0
		doc.emails_found = len(result.emails)
		doc.phones_found = len(result.phones)
		doc.social_profiles = social
		doc.raw_json = frappe.as_json(result.to_dict())
		if not notes and result.notes:
			doc.notes = "\n".join(result.notes)

	doc.insert(ignore_permissions=True)
	return doc.name


def enqueue_enrichment(
	reference_doctype: str, reference_name: str, website: str, user: str, trigger: str = "manual"
) -> dict:
	"""Enqueue one ``run_enrichment`` job (long queue, per-doc ``job_id`` +
	``deduplicate``, after commit). The single place the job is enqueued -- shared by
	the manual (``api.enrich``/``api.retry``) and auto (``after_insert``) paths so a
	manual click and an auto-fire never double-run, and the enqueue options stay in
	one spot. ``enqueue_after_commit`` matters for the ``after_insert`` caller, whose
	transaction has not committed yet; it is harmless for the already-saved paths.

	Reads only the Settings Single for the timeout bound (cheap, framework-cached) --
	it never assembles the full config.
	"""
	s = get_settings()
	timeout = int(_setting(s, "request_timeout")) * int(_setting(s, "max_pages")) + 60
	job_id = f"domain-enrich-{reference_doctype}-{reference_name}"
	frappe.enqueue(
		"crm.domain_enrichment.tasks.run_enrichment",
		queue="long",
		timeout=timeout,
		job_id=job_id,
		deduplicate=True,
		enqueue_after_commit=True,
		reference_doctype=reference_doctype,
		reference_name=reference_name,
		website=website,
		user=user,
		trigger=trigger,
	)
	return {"queued": True, "job_id": job_id, "website": website}


def auto_enrich_on_create(doc, method=None):
	"""Auto-enqueue enrichment for a new CRM record.

	Called from the ``after_insert`` of the CRM Lead / CRM Deal / CRM Organization
	controllers (the trigger stays visible where the record lives, rather than as a
	doc_events hook). Best-effort and never raises into the save. Fires only when the
	feature is enabled, ``auto_enrich`` is on, the doctype is enabled, and the record
	has a website. Reuses the same per-doc ``job_id``
	+ ``deduplicate`` as the manual ``api.enrich`` path, so a manual click and the
	auto-fire never double-run. A new Deal created with a website is therefore enriched
	alongside its Organization -- each crawls independently and writes its own fields.
	"""
	try:
		# Cheap Settings-only gate -- runs on every Lead/Deal/Org insert, so it must
		# not assemble the full config (Rules/Mappings). The worker builds that later.
		if not auto_enrich_enabled_for(doc.doctype):
			return

		website = (doc.get("website") or "").strip()
		if not website:
			return

		enqueue_enrichment(doc.doctype, doc.name, website, frappe.session.user, trigger="auto")
	except Exception:
		frappe.log_error(title="Domain Enrichment: auto_enrich_on_create failed")


def run_enrichment(
	reference_doctype: str,
	reference_name: str,
	website: str,
	user: str | None = None,
	trigger: str = "manual",
):
	"""Enqueued worker: crawl, map onto the origin doc, write a Run, stream progress.

	Never raises to the worker. On success the mapped origin doc is saved (a normal
	permission-respecting save -- it is the doc the user triggered enrichment on; no
	related records are touched, that is Phase 5). On any exception the Run is marked
	Failed, logged, and an error event is published.
	"""
	user = user or frappe.session.user
	started_on = frappe.utils.now_datetime()

	def progress(step_index, message=""):
		_publish(
			reference_doctype,
			reference_name,
			status="running",
			message=message,
			step=step_index,
			user=user,
		)

	try:
		cfg = get_config()
		_publish(reference_doctype, reference_name, status="running", message="Starting", step=0, user=user)

		result = run_pipeline(website, cfg=cfg, progress=progress)

		doc = frappe.get_doc(reference_doctype, reference_name)
		doc.check_permission("write")
		filled_fields = apply_to_document(doc, result, cfg)
		if filled_fields:
			doc.save()

		write_run(
			reference_doctype,
			reference_name,
			website,
			status="Completed",
			result=result,
			started_on=started_on,
		)

		_publish(
			reference_doctype,
			reference_name,
			status="completed",
			message="Completed",
			step=TOTAL_STEPS - 1,
			payload={
				"filled_fields": filled_fields,
				"notes": result.notes,
				**result.flat(),
			},
			user=user,
		)
		capture(
			"enrichment_run_completed",
			"crm",
			properties={
				"doctype": reference_doctype,
				"trigger": trigger,
				"status": "success",
			},
		)
	except Exception:
		# Discard any partial writes (e.g. a doc.save() that fired side effects before a
		# later step threw). execute_job commits when this function returns normally, so
		# without the rollback those partials would be committed alongside the Failed run.
		frappe.db.rollback()
		frappe.log_error(
			title="Domain Enrichment: run_enrichment failed",
			message=frappe.get_traceback(),
		)
		try:
			write_run(
				reference_doctype,
				reference_name,
				website,
				status="Failed",
				started_on=started_on,
				notes=frappe.utils.cstr(frappe.get_traceback())[:1000],
			)
		except Exception:
			frappe.log_error(title="Domain Enrichment: could not write Failed run")
		_publish(
			reference_doctype,
			reference_name,
			status="error",
			message=frappe._("Enrichment failed. Check the error log."),
			step=0,
			user=user,
		)
		capture(
			"enrichment_run_completed",
			"crm",
			properties={
				"doctype": reference_doctype,
				"trigger": trigger,
				"status": "failure",
			},
		)