#!/usr/bin/env bash
# Framework detection from project directory (cwd or first arg).
# Used by bin/agent-guardrails to skip prompt when project is detectable.
# detect_framework: echoes first detected framework or empty.
# detect_frameworks_list: echoes all detected frameworks (space-separated, unique)
#   so the dispatcher can show "Multiple frameworks detected: X, Y. Choose one: ...".

# shellcheck source=./common.sh
source "$(dirname "${BASH_SOURCE[0]:-.}")/common.sh"

# Collect all detected framework names (unique, order: pyproject -> package.json -> requirements)
detect_frameworks_list() {
    local dir="${1:-.}"
    local list=()

    [[ ! -d "$dir" ]] && echo "" && return 0

    # Python: pyproject.toml
    if [[ -f "$dir/pyproject.toml" ]]; then
        grep -qi 'langchain\|langgraph' "$dir/pyproject.toml" 2> /dev/null && list+=(langchain)
        grep -qi 'crewai' "$dir/pyproject.toml" 2> /dev/null && list+=(crewai)
    fi

    # Node: package.json
    if [[ -f "$dir/package.json" ]]; then
        grep -qi 'openclaw\|open-claw\|agent-guardrails' "$dir/package.json" 2> /dev/null && list+=(openclaw)
    fi

    # requirements.txt fallback
    if [[ -f "$dir/requirements.txt" ]]; then
        grep -qi 'langchain' "$dir/requirements.txt" 2> /dev/null && list+=(langchain)
        grep -qi 'crewai' "$dir/requirements.txt" 2> /dev/null && list+=(crewai)
    fi

    # Claude Code and Cursor are IDE/global integrations — not detectable from project
    # files. Users choose them explicitly: npx @aporthq/aport-agent-guardrails claude-code

    # Dedupe preserving order
    local seen=() out=()
    if [[ ${#list[@]} -gt 0 ]]; then
        for fw in "${list[@]}"; do
            if [[ " ${seen[*]:-} " != *" $fw "* ]]; then
                seen+=("$fw")
                out+=("$fw")
            fi
        done
    fi
    if [[ ${#out[@]} -gt 0 ]]; then
        echo "${out[*]}"
    else
        echo ""
    fi
    return 0
}

# Return first detected framework (for single-detection behavior); empty if none.
detect_framework() {
    local list
    list="$(detect_frameworks_list "${1:-.}")"
    if [[ -n "$list" ]]; then
        echo "${list%% *}"
    else
        echo ""
    fi
    return 0
}

export -f detect_framework detect_frameworks_list