import Foundation
import CoreVideo

/// Microsoft Teams adapter (native app: com.microsoft.teams2 / .teams).
///
/// Teams' active-speaker cue is a **coloured ring/border** (Teams violet) around
/// the speaking participant's tile; the **name sits in the tile's bottom-left**.
/// Not a launch priority — included so the four detected platforms all have a
/// visual adapter and degrade no worse than colored-border detection.
///
/// Detection *logic* is validated on synthetic frames; geometry constants are a
/// first pass pending real Teams screenshots.
struct TeamsAdapter: AppAdapter {
    static let bundleIDs = ["com.microsoft.teams2", "com.microsoft.teams"]
    let adapterVersion = "teams-0.1.0"
    let preferredFPS = 3

    private let analyzer: GridCallAnalyzer

    init() {
        var config = GridCallAnalyzer.Config()
        config.nameAnchor = .bottomLeft
        config.detectColoredBorder = true     // Teams-violet speaking ring (faint)
        config.detectWhiteBorder = false
        // Teams' ring is muted: brand violet #6264A7 ≈ 0.41 sat, light variants
        // ~0.27 — well under the 0.5 default, so the default misses it entirely.
        // Drop the threshold and (since low sat invites warm-video false positives)
        // gate to the violet/indigo hue band. Both pending real-fixture calibration.
        config.colorSaturation = 0.22
        config.colorHueRange = 215...275
        config.tileExpandX = 3.0
        config.tileExpandY = 5.0
        self.analyzer = GridCallAnalyzer(config: config)
    }

    func analyze(frame: CVPixelBuffer, at t: TimeInterval) -> [SpeakerObservation] {
        analyzer.analyze(pixelBuffer: frame, at: t)
    }

    // Exposed for fixture/synthetic tests.
    func analyze(cgImage: CGImage, at t: TimeInterval) -> [SpeakerObservation] {
        analyzer.analyze(cgImage: cgImage, at: t)
    }
}