using Management.Data;
using Management.Security;
using Microsoft.AspNetCore.Mvc;
using System.Text.Json;

namespace Management.Controllers.Admin;

/// <summary>
/// Admin endpoints for campaign performance reporting and intelligence.
/// Provides normalized metrics across all providers (Google, Meta, TikTok).
/// Requires Admin role.
///
/// ENDPOINTS:
/// POST   /api/admin/reporting/summary              - KPI summary across all campaigns
/// POST   /api/admin/reporting/campaigns             - Per-campaign performance metrics
/// GET    /api/admin/reporting/campaigns/{id}        - Detailed metrics for one initiative
/// POST   /api/admin/reporting/insights              - Optimization recommendations
/// POST   /api/admin/reporting/analysis              - Post-campaign analysis data
/// </summary>
[ApiController]
[Route("api/admin/reporting")]
public sealed class AdminReportingController : AdminControllerBase
{
    public AdminReportingController(SqlService sql, ClientContext client, ILogger<AdminReportingController> log)
        : base(sql, client, log) { }

    /// <summary>
    /// KPI summary: totals for spend, impressions, clicks, conversions, CTR, CPC, ROAS.
    /// Body: { dateFrom?, dateTo?, clientId? }
    /// </summary>
    [HttpPost("summary")]
    public Task<IActionResult> Summary([FromBody] JsonElement body, CancellationToken ct)
        => CallProc("spAdminReporting", "summary", body.ToString(), ct);

    /// <summary>
    /// Per-campaign performance list with channel breakdowns.
    /// Body: { status?, clientId?, dateFrom?, dateTo?, sortBy?, sortDir?, page?, pageSize? }
    /// </summary>
    [HttpPost("campaigns")]
    public Task<IActionResult> Campaigns([FromBody] JsonElement body, CancellationToken ct)
        => CallProc("spAdminReporting", "campaigns", body.ToString(), ct);

    /// <summary>
    /// Detailed metrics for a single initiative with daily time-series
    /// and per-channel breakdowns.
    /// </summary>
    [HttpGet("campaigns/{initiativeId:long}")]
    public Task<IActionResult> CampaignDetail(long initiativeId, CancellationToken ct)
        => CallProc("spAdminReporting", "detail", new { initiativeId }, ct);

    /// <summary>
    /// Optimization insights and recommendations.
    /// Body: { severity?, clientId? }
    /// </summary>
    [HttpPost("insights")]
    public Task<IActionResult> Insights([FromBody] JsonElement body, CancellationToken ct)
        => CallProc("spAdminReporting", "insights", body.ToString(), ct);

    /// <summary>
    /// Post-campaign analysis: completed campaigns with ROI, cost-efficiency,
    /// and channel-level performance comparisons.
    /// Body: { clientId?, dateFrom?, dateTo? }
    /// </summary>
    [HttpPost("analysis")]
    public Task<IActionResult> Analysis([FromBody] JsonElement body, CancellationToken ct)
        => CallProc("spAdminReporting", "analysis", body.ToString(), ct);
}