#!/bin/bash

# Single source of truth for the Tools tab. The frontend reads
# /data/apps/generated/apps-tools.json — this generator emits it.
#
# Tools are self-contained per app. To add one:
#   1. Declare it in containers/<app>/tools/<app>.tools.json (a { "tools": [ … ] }
#      object — auto-merged below; no edit to this file needed).
#   2. Drop the one-function file beside it at
#      containers/<app>/tools/<app>_<tool_id>.sh with
#      `app<App><PascalCase(toolId)>()` defined inside (live-sourced by the
#      container scan).
#   3. Re-run the WebUI updater (or call this function directly) to
#      regenerate apps-tools.json.
#
# Tool entry schema (matches what tools-manager.js expects):
#   {
#     id:           "<unique within the app>",   # passed to dispatcher
#     label:        "Reset User Password",       # button + modal heading
#     description:  "One-line summary",          # shown on card + modal
#     icon:         "🔑",                         # any emoji
#     destructive:  false,                       # red button if true
#     confirm:      "Are you sure?",             # forces a modal even
#                                                # when fields is empty
#     fields:       []                           # see field schema below
#   }
#
# Field schema (each form input the modal collects):
#   { name, label, type: text|password|number|select|checkbox|textarea,
#     default, placeholder, required, options (for select), min, max }
webuiGenerateAppsToolsConfig() {
    # The WebUI task service is a long-lived bash process that sources
    # this file once at startup. When the auto-updater rewrites this
    # script on disk (e.g. to add a new app's tools entry), the function
    # in memory stays stale until the service restarts — producing
    # apps-tools.json without the new entries. Re-source ourselves on
    # every call so heredoc edits take effect immediately, then dispatch
    # to the freshly-loaded version. The guard prevents infinite
    # recursion.
    # Skip the reload if the file is missing right now — happens briefly
    # during update.sh quick (find -delete + cp). Fall through to the
    # in-memory version (one cycle stale at worst).
    if [[ -z "$_WEBUI_TOOLS_RELOADED" && -f "${BASH_SOURCE[0]}" ]]; then
        local _WEBUI_TOOLS_RELOADED=1
        source "${BASH_SOURCE[0]}"
        webuiGenerateAppsToolsConfig "$@"
        return $?
    fi

    local output_file="${containers_dir}libreportal/frontend/data/apps/generated/apps-tools.json"
    local tmp="$(mktemp)"

    runFileOp mkdir -p "$(dirname "$output_file")"

    # Start empty; every app declares its own tools (merged below). The heredoc is
    # kept as the seed so a central tool could be added here if ever needed.
    cat > "$tmp" <<'JSON'
{
  "apps": {}
}
JSON

    # Merge per-app tool declarations so any app — core or DROPPED-IN (e.g. from
    # LibrePortal-Infra) — registers its own Tools tab actions without editing this
    # file. Each app ships containers/<app>/tools/<app>.tools.json = { "tools": [ … ] };
    # it sets .apps[<app>]. The tool functions live beside it in the same tools/
    # folder and are live-sourced by the container scan.
    if command -v jq >/dev/null 2>&1; then
        local _tj _app
        for _tj in "${install_containers_dir}"*/tools/*.tools.json; do
            [[ -f "$_tj" ]] || continue
            _app="$(basename "$(dirname "$(dirname "$_tj")")")"   # …/<app>/tools/<x>.tools.json
            if jq -e . "$_tj" >/dev/null 2>&1; then
                jq --arg app "$_app" --slurpfile t "$_tj" '.apps[$app] = $t[0]' "$tmp" > "$tmp.m" && mv "$tmp.m" "$tmp"
            else
                isNotice "Skipping invalid tools file: $_tj"
            fi
        done
    fi

    if command -v jq >/dev/null 2>&1; then
        if ! jq . "$tmp" >/dev/null 2>&1; then
            isNotice "Generated apps-tools.json failed JSON validation; keeping existing file."
            rm -f "$tmp"
            return 0
        fi
    fi

    runFileWrite "$output_file" < "$tmp"; rm -f "$tmp"
    isSuccessful "Generated apps-tools.json ($(jq '[.apps[].tools | length] | add' "$output_file" 2>/dev/null || echo "?") tool(s) across $(jq '.apps | length' "$output_file" 2>/dev/null || echo "?") app(s))."
}