import Lean
import WebRTC
import HTTP
import SciHub.GENSIS

namespace SciHub

/-- Configuration for a scientific paper source -/
structure SourceConfig where
  name : String
  baseUrl : String
  endpoints : Array String
  headers : Array (String × String) := #[]
  needsAuth : Bool := false
  authMethod : Option String := none
  genesisProfile : Option GENSIS.GeneticProfile := none

/-- Represents a scientific paper -/
structure Paper where
  doi : String
  title : String
  authors : Array String
  year : Nat
  abstract : Option String := none
  journal : Option String := none
  downloadUrl : Option String := none
  genesisEncoding : Option GENSIS.GeneticEncoding := none

/-- Result of a paper search -/
structure SearchResult where
  papers : Array Paper
  totalCount : Nat
  source : String

/-- WebRTC plugin for scientific paper sources -/
class SciHubPlugin where
  config : SourceConfig
  initialize : IO Unit
  search : (query : String) → (limit : Nat := 10) → IO SearchResult
  download : (doi : String) → IO (Option ByteArray)
  genesisOptimize : (data : ByteArray) → IO (Option GENSIS.GeneticEncoding)

/-- WebRTC connection manager optimized with GENSIS encoding -/
structure WebRTCManager where
  connection : WebRTC.PeerConnection
  dataChannels : HashMap String WebRTC.DataChannel
  activePlugins : HashMap String SciHubPlugin
  genesisEncoder : GENSIS.GENSISEncoder

/-- Main SciHUB client with GENSIS optimization -/
structure SciHUBClient where
  manager : WebRTCManager
  plugins : HashMap String SciHubPlugin

namespace Core

/-- Initialize a WebRTC peer connection for SciHUB communication -/
def initPeerConnection : IO WebRTC.PeerConnection := do
  let config := WebRTC.RTCConfiguration {
    iceServers := #[WebRTC.RTCIceServer {
      urls := #["stun:stun.l.google.com:19302"]
    }]
  }
  WebRTC.createPeerConnection config

/-- Create a data channel for a specific plugin with GENSIS optimization -/
def createDataChannel
  (peerConnection : WebRTC.PeerConnection)
  (pluginName : String) : IO WebRTC.DataChannel := do
  let label := s!"scihub-{pluginName}"
  let dataChannel := peerConnection.createDataChannel label
  dataChannel.onOpen := fun _ => IO.println s!"Data channel {label} opened"
  dataChannel.onMessage := fun payload =>
    -- Apply GENSIS decoding optimization
    match GENSIS.decode payload with
    | Some decoded => IO.println s!"Decoded from {label}: {decoded}"
    | None => IO.println s!"Received from {label}: {payload}"
  pure dataChannel

/-- Add a plugin to the client -/
def addPlugin
  (client : SciHUBClient)
  (plugin : SciHubPlugin) : IO SciHUBClient := do
  let dataChannel ← createDataChannel client.manager.connection plugin.config.name
  let updatedManager := {
    client.manager with
    dataChannels := client.manager.dataChannels.insert plugin.config.name dataChannel,
    activePlugins := client.manager.activePlugins.insert plugin.config.name plugin
  }
  pure { client with manager := updatedManager }

/-- Initialize a SciHUB client with GENSIS encoder -/
def initClient : IO SciHUBClient := do
  let peerConnection ← initPeerConnection
  let genesisEncoder ← GENSIS.createEncoder
  let manager := WebRTCManager.mk peerConnection HashMap.empty HashMap.empty genesisEncoder
  pure SciHUBClient.mk manager HashMap.empty

end Core

/-- Default SciHub plugin implementation with GENSIS optimization -/
def SciHubPluginImpl : SciHubPlugin where
  config := SourceConfig.mk
    "scihub"
    "https://sci-hub.se"
    #["/download", "/search"]
    #[("User-Agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36")]
    false
    none
    (some GENSIS.defaultGeneticProfile)
  initialize := do
    IO.println "Initializing SciHub plugin with GENSIS optimization..."
  search := fun query limit => do
    -- Mock implementation with GENSIS optimization
    let mockResults := #[Paper.mk "10.1234/example.doi" "Example Paper" #["Author One", "Author Two"] 2023 none none none]
    pure SearchResult.mk mockResults 1 "scihub"
  download := fun doi => do
    IO.println s!"Downloading paper with DOI: {doi}"
    pure none
  genesisOptimize := fun data => do
    let encoder ← GENSIS.createEncoder
    let result ← encoder.encode data
    pure (some result)

/-- Default LibGen plugin implementation with GENSIS optimization -/
def LibGenPluginImpl : SciHubPlugin where
  config := SourceConfig.mk
    "libgen"
    "https://libgen.is"
    #["/search"]
    #[("User-Agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36")]
    false
    none
    (some GENSIS.defaultGeneticProfile)
  initialize := do
    IO.println "Initializing LibGen plugin with GENSIS optimization..."
  search := fun query limit => do
    -- Mock implementation with GENSIS optimization
    let mockResults := #[Paper.mk "10.5678/example.doi" "LibGen Example" #["Author Three", "Author Four"] 2022 none none none]
    pure SearchResult.mk mockResults 1 "libgen"
  download := fun doi => do
    IO.println s!"Downloading book with DOI: {doi}"
    pure none
  genesisOptimize := fun data => do
    let encoder ← GENSIS.createEncoder
    let result ← encoder.encode data
    pure (some result)

/-- API for interacting with the SciHUB client with GENSIS optimization -/
namespace API

/-- Create a new client and add default plugins -/
def createClient : IO SciHUBClient := do
  let client ← Core.initClient
  let client ← Core.addPlugin client SciHubPluginImpl
  let client ← Core.addPlugin client LibGenPluginImpl
  pure client

/-- Search for papers across all active plugins with GENSIS optimization -/
def searchPapers
  (client : SciHUBClient)
  (query : String)
  (limit : Nat := 10) : IO (Array SearchResult) := do
  let mut results := #[]
  for (_, plugin) in client.manager.activePlugins do
    let result ← plugin.search query limit
    results := results.push result
  pure results

/-- Download a specific paper with GENSIS optimization -/
def downloadPaper
  (client : SciHUBClient)
  (source : String)
  (doi : String) : IO (Option ByteArray) := do
  match client.manager.activePlugins.find? source with
  | some plugin =>
    let data ← plugin.download doi
    match data with
    | some bytes =>
      -- Apply GENSIS optimization to downloaded data
      match ← plugin.genesisOptimize bytes with
      | some encoding => pure (some encoding.optimizedData)
      | none => pure data
    | none => pure none
  | none => do
    IO.println s!"Plugin {source} not found"
    pure none

/-- List all available plugins -/
def listPlugins (client : SciHUBClient) : IO (Array String) := do
  let mut names := #[]
  for (name, _) in client.manager.activePlugins do
    names := names.push name
  pure names

/-- Apply GENSIS optimization to all communications -/
def optimizeWithGENESIS (client : SciHUBClient) (data : ByteArray) : IO ByteArray := do
  let result ← client.manager.genesisEncoder.encode data
  pure result.optimizedData

end API

end SciHUB

-- Example usage
#eval do
  let client ← SciHub.API.createClient
  let plugins ← SciHub.API.listPlugins client
  IO.println s!"Available plugins: {plugins}"

  let results ← SciHub.API.searchPapers client "machine learning" 5
  for result in results do
    IO.println s!"Source: {result.source}, Found {result.papers.size} papers"

  let _ ← SciHub.API.downloadPaper client "scihub" "10.1234/example.doi"