import {z} from 'zod'

export type AIGuardMessageContentText = string;

export type AIGuardImageURL = {url: string};

export type AIGuardContentPartType = 'text' | 'image_url';

export type AIGuardContentPart = {image_url?: AIGuardImageURL | undefined, text?: string | undefined, type: AIGuardContentPartType};

export type AIGuardMessageContentParts = Array<AIGuardContentPart>;

export type AIGuardMessageContent = AIGuardMessageContentText | AIGuardMessageContentParts;

export type AIGuardMessageRole = 'user' | 'assistant' | 'system' | 'developer' | 'tool';

export type AIGuardToolCallFunction = {arguments: string, name: string};

export type AIGuardToolCall = {function: AIGuardToolCallFunction, id: string};

export type AIGuardMessage = {content?: AIGuardMessageContent | undefined, role: AIGuardMessageRole, tool_call_id?: string | undefined, tool_calls?: Array<AIGuardToolCall> | undefined};

export type AIGuardCodingAgent = string;

export type AIGuardGlobalConfidenceThreshold = number;

export type AIGuardConfidenceThreshold = {flagging_global?: number | undefined} | {[key: string]: number};

export type AIGuardConfidenceThresholdOverride = AIGuardGlobalConfidenceThreshold | AIGuardConfidenceThreshold;

export type AIGuardToolPolicyAction = 'PASS' | 'BLOCK' | 'EVALUATE';

export type AIGuardMeta = {coding_agent?: AIGuardCodingAgent | undefined, confidence_threshold?: AIGuardConfidenceThresholdOverride | undefined, env?: string | undefined, is_sds_enabled_override?: boolean | undefined, service?: string | undefined, tool_policies?: {[key: string]: AIGuardToolPolicyAction} | undefined};

export type AIGuardEvaluateRequestDataAttributes = {messages: Array<AIGuardMessage>, meta?: AIGuardMeta | undefined};

export type AIGuardEvaluationType = 'evaluations';

export type AIGuardEvaluateRequestData = {attributes: AIGuardEvaluateRequestDataAttributes, type: AIGuardEvaluationType};

export type AIGuardEvaluateRequest = {data: AIGuardEvaluateRequestData};

export type CreateApiApiV2AiGuardEvaluateArgs = {body: AIGuardEvaluateRequest};

export type CreateApiApiV2AiGuardEvaluateOptions = {baseUrl?: string | undefined, apiKeyAuth?: string | undefined, appKeyAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const aIGuardAction = z.enum(["ALLOW", "DENY", "ABORT"]);

export const aIGuardRedactionReplacement = z.object({path: z.string(), replacement: z.string()});

export const aIGuardScfwOutcome = z.enum(["ALLOW", "WARN", "BLOCK"]);

export const aIGuardScfwMatchedRule = z.object({outcome: aIGuardScfwOutcome, rule: z.string()});

export const aIGuardScfwPackageFinding = z.object({ecosystem: z.string(), matched_rules: z.array(aIGuardScfwMatchedRule).optional(), name: z.string(), outcome: aIGuardScfwOutcome, version: z.string()});

export const aIGuardScfwFindings = z.object({packages: z.array(aIGuardScfwPackageFinding).optional(), recommended_action: aIGuardScfwOutcome});

export const aIGuardSdsFindingLocation = z.object({end_index_exclusive: z.number().int(), path: z.string(), start_index: z.number().int()});

export const aIGuardSdsFinding = z.object({category: z.string(), location: aIGuardSdsFindingLocation, rule_display_name: z.string(), rule_tag: z.string()});

export const aIGuardEvaluateAttributesResponse = z.object({action: aIGuardAction, global_prob: z.number().optional(), is_blocking_enabled: z.boolean(), reason: z.string(), redaction_replacements: z.array(aIGuardRedactionReplacement).optional(), scfw_findings: aIGuardScfwFindings.optional(), sds_findings: z.array(aIGuardSdsFinding).optional(), tag_probs: z.record(z.string(), z.number()).nullable(), tags: z.array(z.string())});

export const aIGuardEvaluationType = z.literal("evaluations");

export const aIGuardEvaluateDataResponse = z.object({attributes: aIGuardEvaluateAttributesResponse, id: z.string(), type: aIGuardEvaluationType});

export const aIGuardEvaluateResponse = z.object({data: aIGuardEvaluateDataResponse});

export const validateResponse = async <Output>(
  schema: {
    readonly '~standard': {
      readonly validate: (value: unknown) => ({ readonly value: Output; readonly issues?: undefined } | { readonly issues: ReadonlyArray<{ readonly message: string; readonly path?: ReadonlyArray<PropertyKey | { readonly key: PropertyKey }> | undefined }> }) | Promise<{ readonly value: Output; readonly issues?: undefined } | { readonly issues: ReadonlyArray<{ readonly message: string; readonly path?: ReadonlyArray<PropertyKey | { readonly key: PropertyKey }> | undefined }> }>
    }
  },
  value: unknown
): Promise<Output> => {
  const result = await schema['~standard'].validate(value)

  if (result.issues !== undefined) {
    const detail = result.issues
      .map(({ message, path }) =>
        path?.length
          ? `${path.map((segment) => String(typeof segment === 'object' ? segment.key : segment)).join('.')}: ${message}`
          : message
      )
      .join('; ')

    throw new Error(`Response does not match the schema: ${detail}`, { cause: { issues: result.issues } })
  }

  return result.value
};

/**
 * Evaluate an AI Guard request
 * 
 * POST /api/v2/ai-guard/evaluate
 * 
 * Also accepts auth: AuthZ
 */
export const createApiApiV2AiGuardEvaluate = async (args: CreateApiApiV2AiGuardEvaluateArgs, options?: CreateApiApiV2AiGuardEvaluateOptions) => {
const {baseUrl = "https://api.datadoghq.com", fetch: fetchFn = fetch, apiKeyAuth, appKeyAuth} = options ?? {}

const query = new URLSearchParams()
const headers = new Headers()
headers.set('content-type', "application/json")
headers.set('accept', "application/json")

if (apiKeyAuth !== undefined) headers.set("DD-API-KEY", apiKeyAuth)
if (appKeyAuth !== undefined) headers.set("DD-APPLICATION-KEY", appKeyAuth)

const url = `${baseUrl.replace(/\/+$/, '')}/api/v2/ai-guard/evaluate${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "POST", headers, body: JSON.stringify(args.body)})

if (!res.ok) throw new Error(`Request failed with status ${res.status}`, {cause: {status: res.status, body: await res.text()}})

return validateResponse(aIGuardEvaluateResponse, await res.json())
};