// tools/hako_check/cli.hako — HakoAnalyzerBox (MVP)
using selfhost.shared.common.string_helpers as Str
using tools.hako_check.analysis_consumer as HakoAnalysisBuilderBox
using tools.hako_check.rules.rule_include_forbidden as RuleIncludeForbiddenBox
using tools.hako_check.rules.rule_using_quoted as RuleUsingQuotedBox
using tools.hako_check.rules.rule_static_top_assign as RuleStaticTopAssignBox
using tools.hako_check.rules.rule_global_assign as RuleGlobalAssignBox
using tools.hako_check.rules.rule_dead_methods as RuleDeadMethodsBox
using tools.hako_check.rules.rule_jsonfrag_usage as RuleJsonfragUsageBox
using tools.hako_check.rules.rule_unused_alias as RuleUnusedAliasBox
using tools.hako_check.rules.rule_non_ascii_quotes as RuleNonAsciiQuotesBox
using tools.hako_check.render.graphviz as GraphvizRenderBox
using tools.hako_parser.parser_core as HakoParserCoreBox

static box HakoAnalyzerBox {
  run(args) {
    if args == null || args.size() < 1 { print("[lint/error] missing paths"); return 2 }
    // options: --format {text|dot|json} (accept anywhere)
    local fmt = "text"
    local debug = 0
    local no_ast = 0
    // single-pass parse: handle options in-place and collect sources
    local i = 0
    local fail = 0
    local irs = new ArrayBox()
    local diags = new ArrayBox()
    // Support inline sources: --source-file <path> <text>. Also accept --debug and --format anywhere.
    while i < args.size() {
      local p = args.get(i)
      // handle options
      if p == "--debug" { debug = 1; i = i + 1; continue }
      if p == "--no-ast" { no_ast = 1; i = i + 1; continue }
      if p == "--format" {
        if i + 1 >= args.size() { print("[lint/error] --format requires value"); return 2 }
        fmt = args.get(i+1); i = i + 2; continue
      }
      // source handling
      local text = null
      if p == "--source-file" {
        if i + 2 < args.size() { p = args.get(i+1); text = args.get(i+2); i = i + 3 } else { print("[lint/error] --source-file requires <path> <text>"); return 2 }
      } else {
        // Read from filesystem via FileBox (plugin must be available)
        local f = new FileBox(); if f.open(p) == 0 { print("[lint/error] cannot open: " + p); fail = fail + 1; i = i + 1; continue }
        text = f.read(); f.close(); i = i + 1
      }
      // keep a copy before sanitize for rules that must see original bytes (HC017, etc.)
      local text_raw = text
      // pre-sanitize (ASCII quotes, normalize newlines) — minimal & reversible
      text = me._sanitize(text)
      // analysis
      local ir = HakoAnalysisBuilderBox.build_from_source_flags(text, p, no_ast)
      // parse AST once for AST-capable rules（no_ast=1 のときはスキップ）
      local ast = null
      if no_ast == 0 { ast = HakoParserCoreBox.parse(text) }
      if debug == 1 {
        local mc = (ir.get("methods")!=null)?ir.get("methods").size():0
        local cc = (ir.get("calls")!=null)?ir.get("calls").size():0
        local ec = (ir.get("entrypoints")!=null)?ir.get("entrypoints").size():0
        print("[hako_check/IR] file=" + p + " methods=" + me._itoa(mc) + " calls=" + me._itoa(cc) + " eps=" + me._itoa(ec))
      }
      irs.push(ir)
      // rules that work on raw source
      local out = new ArrayBox()
      if ast != null {
        local before = out.size()
        RuleIncludeForbiddenBox.apply_ast(ast, p, out)
        // Fallback to text scan if AST did not detect any include
        if out.size() == before { RuleIncludeForbiddenBox.apply(text, p, out) }
      } else {
        RuleIncludeForbiddenBox.apply(text, p, out)
      }
      RuleUsingQuotedBox.apply(text, p, out)
      RuleUnusedAliasBox.apply(text, p, out)
      RuleStaticTopAssignBox.apply(text, p, out)
      RuleGlobalAssignBox.apply(text, p, out)
      // HC017 must inspect original text prior to sanitize
      RuleNonAsciiQuotesBox.apply(text_raw, p, out)
      RuleJsonfragUsageBox.apply(text, p, out)
      // rules that need IR (enable dead code detection)
      local before_n = out.size()
      RuleDeadMethodsBox.apply_ir(ir, p, out)
      if debug == 1 {
        local after_n = out.size()
        local added = after_n - before_n
        print("[hako_check/HC011] file=" + p + " added=" + me._itoa(added) + " total_out=" + me._itoa(after_n))
      }
      // flush
      // for j in 0..(n-1)
      local n = out.size(); if n > 0 && fmt == "text" {
        local j = 0; while j < n { print(out.get(j)); j = j + 1 }
      }
      // also collect diagnostics for json-lsp
      local j2 = 0; while j2 < n { local msg = out.get(j2); local d = me._parse_msg_to_diag(msg, p); if d != null { diags.push(d) }; j2 = j2 + 1 }
      fail = fail + n
    }
    // optional DOT/JSON output
    if fmt == "dot" { me._render_dot_multi(irs) }
    if fmt == "json-lsp" { me._render_json_lsp(diags) }
    // return number of findings as RC
    return fail
  }
  // no-op
  _sanitize(text) {
    if text == null { return text }
    // Normalize CRLF -> LF and convert fancy quotes to ASCII
    local out = ""
    local n = text.length()
    local i2 = 0
    while i2 < n {
      local ch = text.substring(i2, i2+1)
      // drop CR
      if ch == "\r" { i2 = i2 + 1; continue }
      // fancy double quotes → ASCII
      if ch == "“" || ch == "”" { out = out.concat("\""); i2 = i2 + 1; continue }
      // fancy single quotes → ASCII
      if ch == "‘" || ch == "’" { out = out.concat("'"); i2 = i2 + 1; continue }
      out = out.concat(ch)
      i2 = i2 + 1
    }
    return out
  }
  _render_json_lsp(diags) {
    // Emit diagnostics pretty-printed to match expected fixtures
    diags = me._sort_diags(diags)
    print("{\"diagnostics\":[")
    if diags != null {
      local i = 0
      while i < diags.size() {
        local d = diags.get(i)
        local file = me._json_quote(d.get("file"))
        local line = me._itoa(d.get("line"))
        local rule = me._json_quote(d.get("rule"))
        local msg = me._json_quote(d.get("message"))
        local qf = d.get("quickFix"); if qf == null { qf = "" }
        local sev = d.get("severity"); if sev == null { sev = "warning" }
        local qfj = me._json_quote(qf)
        local entry = "  {\"file\":" + file + ",\"line\":" + line + ",\"rule\":" + rule + ",\"message\":" + msg + ",\"quickFix\":" + qfj + ",\"severity\":\"" + sev + "\"}"
        if i != diags.size()-1 { print(entry + ",") } else { print(entry) }
        i = i + 1
      }
    }
    print("]}")
    return 0
  }
  _parse_msg_to_diag(msg, path) {
    if msg == null { return null }
    // Expect prefixes like: [HC002] ... path:LINE or [HC011] ... :: Method
    local rule = "HC000"; local i0 = msg.indexOf("["); local i1 = msg.indexOf("]")
    if i0 == 0 && i1 > 1 { rule = msg.substring(1, i1) }
    // find last ':' as line separator
    local line = 1
    local p = msg.lastIndexOf(":")
      if p > 0 {
        // try parse after ':' as int (consume consecutive trailing digits)
        local tail = msg.substring(p+1)
        // remove leading spaces
      local q = 0; while q < tail.length() { local c=tail.substring(q,q+1); if c==" "||c=="\t" { q = q + 1  continue } break }
      local digits = ""; while q < tail.length() { local c=tail.substring(q,q+1); if c>="0" && c<="9" { digits = digits + c; q = q + 1; continue } break }
      if digits != "" { line = me._atoi(digits) }
      }
    // message: drop path and line suffix
    local message = msg
    // naive quickFix suggestions
    local qf = ""
    if rule == "HC002" { qf = "Replace include with using (alias)" }
    if rule == "HC003" { qf = "Quote module name: using \"mod\"" }
    if rule == "HC010" { qf = "Move assignment into a method (lazy init)" }
    if rule == "HC011" { qf = "Remove or reference the dead method from an entrypoint" }
    local sev = "warning"
    if rule == "HC001" || rule == "HC002" || rule == "HC010" || rule == "HC011" { sev = "error" }
    if rule == "HC003" || rule == "HC020" { sev = "warning" }
    local d = new MapBox(); d.set("file", path); d.set("line", line); d.set("rule", rule); d.set("message", message); d.set("quickFix", qf); d.set("severity", sev)
    return d
  }
  _render_dot_multi(irs) {
    // Delegate to Graphviz renderer (includes edges)
    GraphvizRenderBox.render_multi(irs)
    return 0
  }
  _sort_diags(diags) {
    if diags == null { return new ArrayBox() }
    local out = new ArrayBox(); local i=0; while i<diags.size() { out.push(diags.get(i)); i=i+1 }
    local n = out.size(); local a=0; while a<n { local b=a+1; while b<n {
      local da = out.get(a); local db = out.get(b)
      local ka = da.get("file") + ":" + me._itoa(da.get("line"))
      local kb = db.get("file") + ":" + me._itoa(db.get("line"))
      if kb < ka { local tmp=out.get(a); out.set(a,out.get(b)); out.set(b,tmp) }
      b=b+1 } a=a+1 }
    return out
  }
  _itoa(n) {
    // assume non-negative small ints for diagnostics
    local v = 0 + n
    if v == 0 { return "0" }
    local out = ""; local digits = "0123456789"
    local tmp = ""
    while v > 0 { local d = v % 10; tmp = digits.substring(d,d+1) + tmp; v = v / 10 }
    out = tmp
    return out
  }
  _json_quote(s) {
    if s == null { return "\"\"" }
    local out = ""; local i = 0; local n = s.length()
    while i < n {
      local ch = s.substring(i,i+1)
      if ch == "\\" { out = out + "\\\\" }
      else { if ch == "\"" { out = out + "\\\"" } else { if ch == "\n" { out = out + "\\n" } else { if ch == "\r" { out = out + "\\r" } else { if ch == "\t" { out = out + "\\t" } else { out = out + ch } } } } }
      i = i + 1
    }
    return "\"" + out + "\""
  }
  _atoi(s) {
    if s == null { return 0 }
    local n = s.length(); if n == 0 { return 0 }
    local i = 0; local v = 0
    local digits = "0123456789"
    while i < n {
      local ch = s.substring(i,i+1)
      // stop at first non-digit
      if ch < "0" || ch > "9" { break }
      // map to int via indexOf
      local pos = digits.indexOf(ch)
      if pos < 0 { break }
      v = v * 10 + pos
      i = i + 1
    }
    return v
  }
}

// Default entry: Main.main so runner resolves without explicit --entry
static box Main { method main(args) { return HakoAnalyzerBox.run(args) } }