## Integration tests: QBot vs SittingDuck and vs OscillatorBot.
## Requires a running TR server (set TR_SERVER_JAR / TR_BATTLE_RUNNER env vars).
## Also includes an offline parseServerOutput unit test — no Java needed.

import std/[os, unittest]
import test_framework/battle_result

# ---------- offline unit test (no server needed) ----------

suite "parseServerOutput":
  test "parses a 2-round battle fixture":
    const fixture = """
{"event":"game_started","bots":["QBot","SittingDuck"]}
{"event":"round_ended","round":1,"results":[{"name":"QBot","score":300,"rank":1,"survived":true},{"name":"SittingDuck","score":0,"rank":2,"survived":false}]}
{"event":"round_ended","round":2,"results":[{"name":"QBot","score":250,"rank":1,"survived":true},{"name":"SittingDuck","score":0,"rank":2,"survived":false}]}
{"event":"battle_ended","results":[{"name":"QBot","totalScore":550,"rank":1,"firstPlaces":2,"survivalCount":2},{"name":"SittingDuck","totalScore":0,"rank":2,"firstPlaces":0,"survivalCount":0}]}
"""
    let r = parseServerOutput(fixture)

    check r.bots == @["QBot", "SittingDuck"]
    check r.rounds.len == 2

    # per-round data
    check r.rounds[0].round == 1
    check r.rounds[0].results[0].name == "QBot"
    check r.rounds[0].results[0].score == 300
    check r.rounds[0].results[0].survived == true
    check r.rounds[1].results[1].survived == false

    # final standings
    check r.results.len == 2

    var qbot: BotResult
    for b in r.results:
      if b.name == "QBot": qbot = b
    check qbot.name == "QBot"          # zero-value guard
    check qbot.totalScore == 550
    check qbot.firstPlaces == 2
    check qbot.survivalCount == 2
    check qbot.rank == 1

    check r.winners == @["QBot"]

# ---------- integration tests (require TR server + BattleRunner JARs) ----------

const
  DefaultServerJar  = "/home/davide/Projects/tank-royale/server/build/libs/robocode-tankroyale-server-0.35.5-all.jar"
  DefaultRunnerJar  = "/home/davide/Projects/tank-royale/runner/examples/lib/robocode-tankroyale-runner.jar"

let serverJar  = getEnv("TR_SERVER_JAR",    DefaultServerJar)
let runnerJar  = getEnv("TR_BATTLE_RUNNER", DefaultRunnerJar)
if not fileExists(serverJar) or not fileExists(runnerJar):
  echo "Skipping integration tests: JAR files not found (set TR_SERVER_JAR / TR_BATTLE_RUNNER to override)"
  quit(0)

import test_framework/test_framework

const
  qbotDir        = currentSourcePath().parentDir.parentDir
  sittingDuckDir = currentSourcePath().parentDir.parentDir.parentDir /
                   "common_libs" / "test_framework" / "adversaries" / "SittingDuck"
  oscillatorDir  = currentSourcePath().parentDir.parentDir.parentDir /
                   "common_libs" / "test_framework" / "adversaries" / "OscillatorBot"

suite "QBot integration battles":
  test "beats SittingDuck in 3 rounds":
    let r = runBattle(@[qbotDir, sittingDuckDir], rounds = 3)

    check r.rounds.len == 3
    check r.results.len == 2

    # zero-value guard: catches name mismatch / missing bot
    var qbot, duck: BotResult
    for b in r.results:
      if b.name == "QBot":       qbot = b
      if b.name == "SittingDuck": duck = b
    check qbot.name == "QBot"
    check duck.name == "SittingDuck"

    # overall standings
    check qbot.totalScore > duck.totalScore
    check qbot.rank == 1
    check qbot.firstPlaces > 0
    check qbot.survivalCount > 0
    check "QBot" in r.winners

    # per-round: QBot should outscore SittingDuck every round
    for rnd in r.rounds:
      var rqbot, rduck: BotRoundResult
      for br in rnd.results:
        if br.name == "QBot":       rqbot = br
        if br.name == "SittingDuck": rduck = br
      check rqbot.score > rduck.score
      check rqbot.survived == true

  test "competes against OscillatorBot in 5 rounds":
    let r = runBattle(@[qbotDir, oscillatorDir], rounds = 5)

    check r.rounds.len == 5
    check r.results.len == 2

    var qbot, osc: BotResult
    for b in r.results:
      if b.name == "QBot":         qbot = b
      if b.name == "OscillatorBot": osc = b
    check qbot.name == "QBot"
    check osc.name == "OscillatorBot"

    # QBot is a learning bot — just assert it scored at all
    check qbot.totalScore > 0
    # Both bots should appear in results with valid scores
    check qbot.totalScore + osc.totalScore > 0

    # per-round: each round has exactly 2 results
    for rnd in r.rounds:
      check rnd.results.len == 2
      for br in rnd.results:
        check br.score >= 0