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import axios, { type AxiosInstance } from "axios";
/** Base API URL – from env or fallback for local dev */
const getBaseUrl = (): string =>
typeof window !== "undefined"
? process.env.NEXT_PUBLIC_API_URL || ""
: process.env.NEXT_PUBLIC_API_URL || process.env.API_URL || "http://localhost:8000";
/** API client instance */
function createApiClient(): AxiosInstance {
const baseURL = getBaseUrl();
return axios.create({
baseURL: baseURL ? `${baseURL.replace(/\/$/, "")}/api/v1` : "/api/v1",
headers: { "Content-Type": "application/json" },
timeout: 60_000,
});
}
const api = createApiClient();
// ─── Types (aligned with backend schemas) ─────────────────────────────────────
export interface GenerationRequest {
prompt: string;
lyrics?: string;
duration?: number;
style?: string;
voice_preset?: string;
vocal_volume?: number;
instrumental_volume?: number;
}
/** Prompt analysis from backend (nested in metadata) */
export interface PromptAnalysis {
original_prompt?: string;
style?: string;
tempo?: number | string;
mood?: string;
instrumentation?: string[];
lyrics?: string;
duration_hint?: number;
enriched_prompt?: string;
}
export interface GenerationMetadata {
prompt?: string;
analysis?: PromptAnalysis;
}
export interface GenerationResponse {
id: string;
status: "pending" | "processing" | "completed" | "failed";
prompt: string;
audio_path?: string | null;
metadata?: GenerationMetadata | null;
processing_time_seconds?: number | null;
error_message?: string | null;
created_at?: string | null;
completed_at?: string | null;
}
export interface GenerationListResponse {
items: GenerationResponse[];
total: number;
page: number;
page_size: number;
}
// ─── API methods ─────────────────────────────────────────────────────────────
export const generationsApi = {
async create(data: GenerationRequest): Promise<GenerationResponse> {
const { data: res } = await api.post<GenerationResponse>("/generations/", data);
return res;
},
async get(id: string): Promise<GenerationResponse> {
const { data } = await api.get<GenerationResponse>(`/generations/${id}`);
return data;
},
async list(page: number = 1, pageSize: number = 20): Promise<GenerationListResponse> {
const { data } = await api.get<GenerationListResponse>("/generations/", {
params: { page, page_size: pageSize },
});
return data;
},
};
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