"""Generator de exemple de cod multi-limbaj pentru integrarea cu AutoPass.

Modul PUR: fara I/O, fara DB, fara stare globala.
Folosit de pagina de documentatie a hub-ului de integrare (Etapa 5).

Campurile obligatorii din payload-ul JSON sunt derivate dinamic din
PrezentareIn.model_fields pentru rezistenta la drift de schema.
"""

from __future__ import annotations

import json

from app.models import PrezentareIn

# Placeholder pentru cheia API — niciodata o cheie reala
_CHEIE_PLACEHOLDER = "rfak_..."


def _campuri_obligatorii() -> list[str]:
    """Intoarce lista campurilor obligatorii din PrezentareIn (is_required())."""
    return [camp for camp, field in PrezentareIn.model_fields.items() if field.is_required()]


def _payload_prezentari_dict(account_id: int) -> dict:
    """Construieste un payload JSON exemplu cu toate campurile obligatorii.

    Campurile cu default (odometru_initial, obs, b64_image, sistem_reparat) sunt
    omise pentru concizie — nu sunt obligatorii.

    `rar_credentials` NU e inclus: cererea trimite doar cheia API + datele prezentarii,
    iar worker-ul foloseste credentialele RAR salvate pe cont (tab-ul Cont). Trimiterea
    lor in payload e optionala (suprascrie creds-urile contului pe acea cerere).
    """
    # Construim un dict cu toate campurile obligatorii
    campuri = _campuri_obligatorii()
    prezentare: dict = {}

    # Valori exemplu pentru campuri obligatorii cunoscute
    valori_exemplu: dict = {
        "vin": "WVWZZZ1JZXW000001",
        "nr_inmatriculare": "B123ABC",
        "data_prestatie": "2026-06-22",
        "odometru_final": "150000",
        "prestatii": [{"cod_prestatie": "OE-1"}],
    }

    for camp in campuri:
        if camp in valori_exemplu:
            prezentare[camp] = valori_exemplu[camp]
        else:
            # Fallback generic pentru campuri neasteptate adaugate ulterior
            prezentare[camp] = f"<{camp}>"

    return {"prezentari": [prezentare]}


def _payload_json_str(account_id: int, indent: int = 2) -> str:
    """Payload JSON formatat ca string pentru includere in snippet-uri."""
    return json.dumps(_payload_prezentari_dict(account_id), indent=indent, ensure_ascii=False)


def _payload_json_compact(account_id: int) -> str:
    """Payload JSON pe o singura linie (fara newline) pentru string literal C#/VFP.

    Foloseste separators=(',', ':') pentru a elimina spatiile si newline-urile.
    Rezultatul e un JSON valid pe o singura linie, fara newline in interior.
    """
    return json.dumps(_payload_prezentari_dict(account_id), separators=(",", ":"), ensure_ascii=False)


def _snippet_curl_prezentari(base_url: str, account_id: int) -> str:
    payload = _payload_json_str(account_id)
    return f"""curl -X POST "{base_url}/v1/prezentari" \\
  -H "Content-Type: application/json" \\
  -H "X-API-Key: {_CHEIE_PLACEHOLDER}" \\
  -d '{payload}'"""


def _snippet_curl_import(base_url: str, account_id: int) -> str:
    fisier = '"file=@prezentari.xlsx"'
    return (
        f'curl -X POST "{base_url}/v1/import" \\\n'
        f'  -H "X-API-Key: {_CHEIE_PLACEHOLDER}" \\\n'
        f"  -F {fisier}"
    )


def _snippet_python_prezentari(base_url: str, account_id: int) -> str:
    payload = _payload_json_str(account_id)
    return f"""import requests

url = "{base_url}/v1/prezentari"
headers = {{
    "X-API-Key": "{_CHEIE_PLACEHOLDER}",
    "Content-Type": "application/json",
}}
payload = {payload}

response = requests.post(url, json=payload, headers=headers)
print(response.json())"""


def _snippet_python_import(base_url: str, account_id: int) -> str:
    return f"""import requests

url = "{base_url}/v1/import"
headers = {{
    "X-API-Key": "{_CHEIE_PLACEHOLDER}",
}}

with open("prezentari.xlsx", "rb") as f:
    files = {{"file": ("prezentari.xlsx", f, "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet")}}
    response = requests.post(url, headers=headers, files=files)

print(response.json())"""


def _snippet_php_prezentari(base_url: str, account_id: int) -> str:
    payload = _payload_json_str(account_id)
    # Escapeaza apostrof-urile pentru PHP heredoc
    payload_php = payload.replace("'", "\\'")
    return f"""<?php
$url = "{base_url}/v1/prezentari";
$payload = '{payload_php}';

$ch = curl_init($url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, $payload);
curl_setopt($ch, CURLOPT_HTTPHEADER, [
    "Content-Type: application/json",
    "X-API-Key: {_CHEIE_PLACEHOLDER}",
]);

$response = curl_exec($ch);
curl_close($ch);
echo $response;"""


def _snippet_php_import(base_url: str, account_id: int) -> str:
    return f"""<?php
$url = "{base_url}/v1/import";
$fisier = new CURLFile("prezentari.xlsx", "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet", "prezentari.xlsx");

$ch = curl_init($url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, ["file" => $fisier]);
curl_setopt($ch, CURLOPT_HTTPHEADER, [
    "X-API-Key: {_CHEIE_PLACEHOLDER}",
]);

$response = curl_exec($ch);
curl_close($ch);
echo $response;"""


def _snippet_csharp_prezentari(base_url: str, account_id: int) -> str:
    payload = _payload_json_compact(account_id)
    # Escape ghilimele duble pentru string C# (literal pe o singura linie)
    payload_cs = payload.replace('"', '\\"')
    return f"""using System.Net.Http;
using System.Text;
using System.Threading.Tasks;

var client = new HttpClient();
client.DefaultRequestHeaders.Add("X-API-Key", "{_CHEIE_PLACEHOLDER}");

var json = "{payload_cs}";
var content = new StringContent(json, Encoding.UTF8, "application/json");

var response = await client.PostAsync("{base_url}/v1/prezentari", content);
var body = await response.Content.ReadAsStringAsync();
Console.WriteLine(body);"""


def _snippet_csharp_import(base_url: str, account_id: int) -> str:
    return f"""using System.Net.Http;
using System.Threading.Tasks;

var client = new HttpClient();
client.DefaultRequestHeaders.Add("X-API-Key", "{_CHEIE_PLACEHOLDER}");

using var form = new MultipartFormDataContent();
var fileBytes = File.ReadAllBytes("prezentari.xlsx");
var fileContent = new ByteArrayContent(fileBytes);
fileContent.Headers.ContentType = new System.Net.Http.Headers.MediaTypeHeaderValue(
    "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");
form.Add(fileContent, "file", "prezentari.xlsx");

var response = await client.PostAsync("{base_url}/v1/import", form);
var body = await response.Content.ReadAsStringAsync();
Console.WriteLine(body);"""


def _snippet_node_prezentari(base_url: str, account_id: int) -> str:
    payload = _payload_json_str(account_id)
    return f"""const payload = {payload};

const response = await fetch("{base_url}/v1/prezentari", {{
  method: "POST",
  headers: {{
    "Content-Type": "application/json",
    "X-API-Key": "{_CHEIE_PLACEHOLDER}",
  }},
  body: JSON.stringify(payload),
}});

const data = await response.json();
console.log(data);"""


def _snippet_node_import(base_url: str, account_id: int) -> str:
    # FormData si Blob sunt globale in Node 18+ — nu necesita import din node:buffer
    return f"""import {{ readFileSync }} from "fs";

const form = new FormData();
const continut = readFileSync("prezentari.xlsx");
form.append("file", new Blob([continut], {{
  type: "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
}}), "prezentari.xlsx");

const response = await fetch("{base_url}/v1/import", {{
  method: "POST",
  headers: {{ "X-API-Key": "{_CHEIE_PLACEHOLDER}" }},
  body: form,
}});

const data = await response.json();
console.log(data);"""


def _snippet_vfp_msxml_prezentari(base_url: str, account_id: int) -> str:
    payload = _payload_json_compact(account_id)
    # VFP: ghilimele in string se dubleaza; payload compact = o singura linie
    payload_vfp = payload.replace('"', '""')
    return f"""* Visual FoxPro — MSXML2.ServerXMLHTTP.6.0
LOCAL oHTTP, cURL, cPayload, cRaspuns
cURL     = "{base_url}/v1/prezentari"
cPayload = "{payload_vfp}"

oHTTP = CREATEOBJECT("MSXML2.ServerXMLHTTP.6.0")
oHTTP.open("POST", cURL, .F.)
oHTTP.setRequestHeader("Content-Type", "application/json")
oHTTP.setRequestHeader("X-API-Key", "{_CHEIE_PLACEHOLDER}")
oHTTP.send(cPayload)

cRaspuns = oHTTP.responseText
? cRaspuns"""


def _snippet_vfp_msxml_import(base_url: str, account_id: int) -> str:
    return f"""* Visual FoxPro — MSXML2.ServerXMLHTTP.6.0 — upload fisier
* Necesita ADODB.Stream pentru a citi fisierul binar
LOCAL oHTTP, oStream, oBody
LOCAL cURL, cGranita, cCRLF, cDisp, cType

cURL      = "{base_url}/v1/import"
cGranita  = "----AutoPassBoundary"
cCRLF     = CHR(13) + CHR(10)

* Citire fisier in ADODB.Stream
oStream = CREATEOBJECT("ADODB.Stream")
oStream.Type = 1  && adTypeBinary
oStream.Open()
oStream.LoadFromFile("prezentari.xlsx")

* Construire body multipart (simplificat — pentru fisiere mici)
oBody = CREATEOBJECT("ADODB.Stream")
oBody.Type = 1
oBody.Open()

oHTTP = CREATEOBJECT("MSXML2.ServerXMLHTTP.6.0")
oHTTP.open("POST", cURL, .F.)
oHTTP.setRequestHeader("Content-Type", "multipart/form-data; boundary=" + cGranita)
oHTTP.setRequestHeader("X-API-Key", "{_CHEIE_PLACEHOLDER}")
* Nota: pentru upload binar complet folositi un helper COM sau ADODB.
oHTTP.send(oBody)
? oHTTP.responseText"""


def _snippet_vfp_winhttp_prezentari(base_url: str, account_id: int) -> str:
    payload = _payload_json_compact(account_id)
    # VFP: ghilimele in string se dubleaza; payload compact = o singura linie
    payload_vfp = payload.replace('"', '""')
    return f"""* Visual FoxPro — WinHttp.WinHttpRequest.5.1
LOCAL oHTTP, cURL, cPayload, cRaspuns
cURL     = "{base_url}/v1/prezentari"
cPayload = "{payload_vfp}"

oHTTP = CREATEOBJECT("WinHttp.WinHttpRequest.5.1")
oHTTP.Open("POST", cURL, .F.)
oHTTP.SetRequestHeader("Content-Type", "application/json")
oHTTP.SetRequestHeader("X-API-Key", "{_CHEIE_PLACEHOLDER}")
oHTTP.Send(cPayload)

cRaspuns = oHTTP.ResponseText
? cRaspuns"""


def _snippet_vfp_winhttp_import(base_url: str, account_id: int) -> str:
    return f"""* Visual FoxPro — WinHttp.WinHttpRequest.5.1 — upload fisier
* Necesita ADODB.Stream pentru a citi fisierul binar
LOCAL oHTTP, oStream
LOCAL cURL, cGranita, cCRLF

cURL     = "{base_url}/v1/import"
cGranita = "----AutoPassBoundary"
cCRLF    = CHR(13) + CHR(10)

oStream = CREATEOBJECT("ADODB.Stream")
oStream.Type = 1  && adTypeBinary
oStream.Open()
oStream.LoadFromFile("prezentari.xlsx")

oHTTP = CREATEOBJECT("WinHttp.WinHttpRequest.5.1")
oHTTP.Open("POST", cURL, .F.)
oHTTP.SetRequestHeader("Content-Type", "multipart/form-data; boundary=" + cGranita)
oHTTP.SetRequestHeader("X-API-Key", "{_CHEIE_PLACEHOLDER}")
* Nota: pentru upload binar complet folositi un helper COM sau ADODB.
oHTTP.Send()
? oHTTP.ResponseText"""


def exemple(base_url: str, account_id: int) -> dict:
    """Genereaza snippet-uri de cod multi-limbaj pentru integrarea cu AutoPass.

    Parametri:
        base_url:   URL-ul de baza al gateway-ului (ex. "https://autopass.example.com")
        account_id: ID-ul contului (inclus in context, nu in snippet-uri)

    Intoarce un dict structurat astfel:
        {
            "<limbaj>": {
                "prezentari": "<snippet string>",
                "import":    "<snippet string>",
            },
            ...
        }

    Limbaje: curl, python, php, csharp, node, vfp_msxml, vfp_winhttp.

    Functie pura: fara I/O, fara DB, fara stare globala.
    """
    return {
        "curl": {
            "prezentari": _snippet_curl_prezentari(base_url, account_id),
            "import": _snippet_curl_import(base_url, account_id),
        },
        "python": {
            "prezentari": _snippet_python_prezentari(base_url, account_id),
            "import": _snippet_python_import(base_url, account_id),
        },
        "php": {
            "prezentari": _snippet_php_prezentari(base_url, account_id),
            "import": _snippet_php_import(base_url, account_id),
        },
        "csharp": {
            "prezentari": _snippet_csharp_prezentari(base_url, account_id),
            "import": _snippet_csharp_import(base_url, account_id),
        },
        "node": {
            "prezentari": _snippet_node_prezentari(base_url, account_id),
            "import": _snippet_node_import(base_url, account_id),
        },
        "vfp_msxml": {
            "prezentari": _snippet_vfp_msxml_prezentari(base_url, account_id),
            "import": _snippet_vfp_msxml_import(base_url, account_id),
        },
        "vfp_winhttp": {
            "prezentari": _snippet_vfp_winhttp_prezentari(base_url, account_id),
            "import": _snippet_vfp_winhttp_import(base_url, account_id),
        },
    }