import uuid
from repositories.pocketbase_client import pb_client
from repositories.repo_config import USE_MOCK_REPOSITORIES

COLLECTION = 'scrape_runs'


class ScrapeRepository:
    """Data access for the `scrape_runs` collection — also the RQ job_id record."""

    def create(self, data):
        return pb_client.create(COLLECTION, data)

    def update(self, job_id, data):
        return pb_client.update(COLLECTION, job_id, data)

    def get_by_id(self, job_id):
        return pb_client.get_one(COLLECTION, job_id)

    def list_recent_for_tenant(self, tenant_id, limit=5):
        """
        Returns a tenant's most recent BATCH runs, newest first — backs
        GET /research/history. Filters to triggered_by="manual" —
        analysis_service.run_competitor_analysis()'s refresh path creates
        its own extra scrape_runs row PER COMPETITOR purely to persist a
        content_hash for next time (hardcoded triggered_by='cron',
        competitors_total=1, results={}), regardless of what triggered the
        parent job. Without this filter those bookkeeping rows — created
        within the same batch, so their started_at timestamps sort ahead
        of or alongside the real job — drowned out the actual batch runs
        in "last 5 runs", with misleading competitor counts and empty
        `results` that broke Restore. 'manual' is the only triggered_by
        value that represents a real, user-visible batch run today; if a
        genuine scheduled *batch* job (distinct from this per-competitor
        stub) is ever introduced, this filter needs revisiting.
        """
        return pb_client.list(
            COLLECTION, filter_str=f'tenant_id = "{tenant_id}" && triggered_by = "manual"',
            sort='-started_at', per_page=limit
        )

    def get_latest_complete_for_tenant(self, tenant_id):
        """
        Returns the tenant's most recent completed BATCH run, or None —
        backs GET /research/history/latest (the Apps Script sidebar's
        "Pull latest results", CLAUDE.md §15). Same triggered_by="manual"
        filter as list_recent_for_tenant() and for the same reason — the
        per-competitor content-hash bookkeeping rows are also created with
        status='complete', so without this filter the Sheet-pull
        integration could silently pull a 1-competitor bookkeeping stub
        instead of the PM's actual last analysis.
        """
        items = pb_client.list(
            COLLECTION, filter_str=f'tenant_id = "{tenant_id}" && triggered_by = "manual" && status = "complete"',
            sort='-started_at', per_page=1
        )
        return items[0] if items else None

    def get_last_hash_for_url(self, competitor_id):
        """
        Returns the most recently recorded content_hash for this
        competitor's prior scrape, or None if it has never been hashed
        before. Backs detect_change()'s content-hash comparison.
        """
        items = pb_client.list(
            COLLECTION,
            filter_str=f'competitor_id = "{competitor_id}" && content_hash != ""',
            sort='-started_at', per_page=1
        )
        return items[0]['content_hash'] if items else None

    def list_all_for_tenant(self, tenant_id):
        """Every scrape_runs row for a tenant, no limit — used for GDPR erasure."""
        return pb_client.list(COLLECTION, filter_str=f'tenant_id = "{tenant_id}"', per_page=500)

    def list_older_than(self, cutoff_iso):
        """Used by the weekly data-cleanup job — CLAUDE.md §22 DATA_RETENTION (90 days for scrape_runs)."""
        return pb_client.list(COLLECTION, filter_str=f'started_at < "{cutoff_iso}"', per_page=500)

    def delete(self, job_id):
        return pb_client.delete(COLLECTION, job_id)


class MockScrapeRepository:
    """In-memory stand-in for ScrapeRepository."""

    def __init__(self):
        self._records = {}
        # Real PocketBase auto-populates started_at via autodate(true) —
        # every "most recent first" sort in this class relies on that.
        # A monotonic counter (rather than datetime.now()) guarantees
        # correct ordering across records created within the same test,
        # regardless of clock resolution.
        self._sequence = 0

    def create(self, data):
        record_id = data.get('id') or str(uuid.uuid4())
        self._sequence += 1
        record = {'id': record_id, 'started_at': f'{self._sequence:020d}', **data}
        self._records[record_id] = record
        return record

    def update(self, job_id, data):
        if job_id not in self._records:
            return None
        self._records[job_id] = {**self._records[job_id], **data}
        return self._records[job_id]

    def get_by_id(self, job_id):
        return self._records.get(job_id)

    def list_recent_for_tenant(self, tenant_id, limit=5):
        items = [
            r for r in self._records.values()
            if r.get('tenant_id') == tenant_id and r.get('triggered_by') == 'manual'
        ]
        items.sort(key=lambda r: r.get('started_at') or '', reverse=True)
        return items[:limit]

    def get_latest_complete_for_tenant(self, tenant_id):
        items = [
            r for r in self._records.values()
            if r.get('tenant_id') == tenant_id and r.get('triggered_by') == 'manual' and r.get('status') == 'complete'
        ]
        items.sort(key=lambda r: r.get('started_at') or '', reverse=True)
        return items[0] if items else None

    def get_last_hash_for_url(self, competitor_id):
        items = [
            r for r in self._records.values()
            if r.get('competitor_id') == competitor_id and r.get('content_hash')
        ]
        items.sort(key=lambda r: r.get('started_at') or '', reverse=True)
        return items[0]['content_hash'] if items else None

    def list_all_for_tenant(self, tenant_id):
        return [r for r in self._records.values() if r.get('tenant_id') == tenant_id]

    def list_older_than(self, cutoff_iso):
        return [r for r in self._records.values() if (r.get('started_at') or '') < cutoff_iso]

    def delete(self, job_id):
        return self._records.pop(job_id, None) is not None


scrape_repository = MockScrapeRepository() if USE_MOCK_REPOSITORIES else ScrapeRepository()