"""Tests d'intégration pour l'export et l'import de configuration."""
import io
import json


def _payload(**overrides):
    """Payload d'import minimal valide."""
    base = {
        "version": 1,
        "jobs": [],
        "destinations": [],
        "remote_instances": [],
        "settings": {},
    }
    base.update(overrides)
    return base


def _job_data(**overrides):
    """Données d'un job valide pour l'import."""
    base = {
        "name": "Mon job",
        "type": "ynh_system",
        "config_json": "{}",
        "cron_expr": "",
        "retention_mode": "count",
        "retention_value": 7,
        "retention_gfs_config": None,
        "enabled": True,
        "core_only": False,
        "destination_name": None,
        "remote_instance_name": None,
    }
    base.update(overrides)
    return base


def _dest_data(**overrides):
    base = {
        "name": "VPS-OVH",
        "host": "vps.example.com",
        "port": 22,
        "user": "backup",
        "remote_path": "/backups",
        "key_name": None,
        "enabled": True,
    }
    base.update(overrides)
    return base


def _do_import(client, payload):
    raw = json.dumps(payload).encode()
    return client.post(
        "/settings/import-config",
        data={"config_file": (io.BytesIO(raw), "config.json")},
        content_type="multipart/form-data",
    )


# ---------------------------------------------------------------------------
# Export
# ---------------------------------------------------------------------------

class TestExportConfig:
    def test_db_vide_retourne_json_valide(self, client):
        resp = client.get("/settings/export-config")
        assert resp.status_code == 200
        assert "application/json" in resp.content_type
        data = resp.get_json()
        assert data["version"] == 1
        assert data["instance_name"] == "test"
        assert data["jobs"] == []
        assert data["destinations"] == []
        assert data["remote_instances"] == []

    def test_exporte_jobs(self, client, app):
        with app.app_context():
            from db import db, Job
            job = Job(
                name="Sys backup", type="ynh_system", config_json="{}",
                cron_expr="0 3 * * *", retention_mode="count",
                retention_value=5, enabled=True, core_only=False,
            )
            db.session.add(job)
            db.session.commit()

        resp = client.get("/settings/export-config")
        data = resp.get_json()
        assert len(data["jobs"]) == 1
        j = data["jobs"][0]
        assert j["name"] == "Sys backup"
        assert j["type"] == "ynh_system"
        assert j["retention_value"] == 5
        assert j["destination_name"] is None

    def test_exporte_job_avec_destination(self, client, app):
        with app.app_context():
            from db import db, Job, Destination
            dest = Destination(
                name="VPS-OVH", host="vps.example.com", port=22,
                user="backup", remote_path="/backups", enabled=True,
            )
            db.session.add(dest)
            db.session.flush()
            job = Job(
                name="Job avec dest", type="ynh_system", config_json="{}",
                cron_expr="", retention_mode="count", retention_value=7,
                enabled=True, core_only=False, destination_id=dest.id,
            )
            db.session.add(job)
            db.session.commit()

        resp = client.get("/settings/export-config")
        data = resp.get_json()
        j = data["jobs"][0]
        assert j["destination_name"] == "VPS-OVH"

    def test_nom_fichier_dans_header(self, client):
        resp = client.get("/settings/export-config")
        cd = resp.headers.get("Content-Disposition", "")
        assert "backupmanager_config_" in cd
        assert ".json" in cd


# ---------------------------------------------------------------------------
# Import
# ---------------------------------------------------------------------------

class TestImportConfig:
    def test_cree_job(self, client, app):
        resp = _do_import(client, _payload(jobs=[_job_data(name="Nouveau job")]))
        assert resp.status_code == 302

        with app.app_context():
            from db import Job
            jobs = Job.query.all()
            assert len(jobs) == 1
            assert jobs[0].name == "Nouveau job"

    def test_met_a_jour_job_existant(self, client, app):
        with app.app_context():
            from db import db, Job
            job = Job(
                name="Mon job", type="ynh_system", config_json="{}",
                cron_expr="", retention_mode="count", retention_value=3,
                enabled=True, core_only=False,
            )
            db.session.add(job)
            db.session.commit()

        resp = _do_import(client, _payload(jobs=[_job_data(retention_value=10)]))
        assert resp.status_code == 302

        with app.app_context():
            from db import Job
            jobs = Job.query.all()
            assert len(jobs) == 1
            assert jobs[0].retention_value == 10

    def test_cree_destination(self, client, app):
        resp = _do_import(client, _payload(destinations=[_dest_data()]))
        assert resp.status_code == 302

        with app.app_context():
            from db import Destination
            dests = Destination.query.all()
            assert len(dests) == 1
            assert dests[0].name == "VPS-OVH"
            assert dests[0].host == "vps.example.com"

    def test_lie_job_a_destination(self, client, app):
        payload = _payload(
            jobs=[_job_data(destination_name="VPS-OVH")],
            destinations=[_dest_data()],
        )
        _do_import(client, payload)

        with app.app_context():
            from db import Job, Destination
            dest = Destination.query.filter_by(name="VPS-OVH").first()
            job = Job.query.filter_by(name="Mon job").first()
            assert job.destination_id == dest.id

    def test_cree_instance_distante(self, client, app):
        payload = _payload(remote_instances=[{
            "name": "Tom", "url": "https://tom.example.com", "api_key": "secret123",
        }])
        _do_import(client, payload)

        with app.app_context():
            from db import RemoteInstance
            instances = RemoteInstance.query.all()
            assert len(instances) == 1
            assert instances[0].name == "Tom"
            assert instances[0].url == "https://tom.example.com"

    def test_importe_retention_gfs(self, client, app):
        gfs = {"daily": 7, "weekly": 4, "monthly": 12}
        payload = _payload(jobs=[_job_data(
            retention_mode="gfs",
            retention_value=0,
            retention_gfs_config=json.dumps(gfs),
        )])
        _do_import(client, payload)

        with app.app_context():
            from db import Job
            job = Job.query.first()
            assert job.retention_mode == "gfs"
            cfg = json.loads(job.retention_gfs_config)
            assert cfg == gfs

    def test_json_invalide_redirige_avec_erreur(self, client):
        resp = client.post(
            "/settings/import-config",
            data={"config_file": (io.BytesIO(b"pas du json"), "config.json")},
            content_type="multipart/form-data",
        )
        assert resp.status_code == 302

    def test_version_incorrecte_rejete(self, client, app):
        payload = _payload()
        payload["version"] = 99
        _do_import(client, payload)

        with app.app_context():
            from db import Job
            assert Job.query.count() == 0

    def test_import_idempotent(self, client, app):
        payload = _payload(jobs=[_job_data()])
        _do_import(client, payload)
        _do_import(client, payload)

        with app.app_context():
            from db import Job
            assert Job.query.count() == 1

    def test_sans_fichier_redirige(self, client):
        resp = client.post("/settings/import-config", data={})
        assert resp.status_code == 302