oximedia_proxy/conform/

timeline.rs

//! Timeline conforming utilities.

use crate::Result;
use std::path::PathBuf;

/// Timeline conformer for various timeline formats.
pub struct TimelineConformer {
    /// Original media directory.
    original_dir: Option<PathBuf>,
}

impl TimelineConformer {
    /// Create a new timeline conformer.
    #[must_use]
    pub const fn new() -> Self {
        Self { original_dir: None }
    }

    /// Set the original media directory.
    #[must_use]
    pub fn with_original_dir(mut self, dir: PathBuf) -> Self {
        self.original_dir = Some(dir);
        self
    }

    /// Conform a timeline file to use original media.
    pub fn conform_timeline(
        &self,
        timeline_path: &std::path::Path,
        output_path: &std::path::Path,
    ) -> Result<TimelineConformResult> {
        // Placeholder: would parse timeline and relink media
        Ok(TimelineConformResult {
            input_path: timeline_path.to_path_buf(),
            output_path: output_path.to_path_buf(),
            clips_relinked: 0,
            clips_failed: 0,
            clips_total: 0,
        })
    }

    /// Extract media references from a timeline.
    pub fn extract_media_references(
        &self,
        timeline_path: &std::path::Path,
    ) -> Result<Vec<MediaReference>> {
        // Placeholder: would parse timeline and extract all media references
        let _timeline_path = timeline_path;
        Ok(Vec::new())
    }

    /// Validate timeline media references.
    pub fn validate_timeline(&self, timeline_path: &std::path::Path) -> Result<TimelineValidation> {
        let references = self.extract_media_references(timeline_path)?;
        let total = references.len();
        let mut found = 0;
        let mut missing = Vec::new();

        for reference in &references {
            if reference.path.exists() {
                found += 1;
            } else {
                missing.push(reference.clone());
            }
        }

        Ok(TimelineValidation {
            total_references: total,
            found_references: found,
            missing_references: missing,
        })
    }
}

impl Default for TimelineConformer {
    fn default() -> Self {
        Self::new()
    }
}

/// Timeline conforming result.
#[derive(Debug, Clone)]
pub struct TimelineConformResult {
    /// Input timeline path.
    pub input_path: PathBuf,

    /// Output timeline path.
    pub output_path: PathBuf,

    /// Number of clips successfully relinked.
    pub clips_relinked: usize,

    /// Number of clips that failed to relink.
    pub clips_failed: usize,

    /// Total number of clips.
    pub clips_total: usize,
}

impl TimelineConformResult {
    /// Check if conforming was successful.
    #[must_use]
    pub const fn is_success(&self) -> bool {
        self.clips_failed == 0
    }

    /// Get success percentage.
    #[must_use]
    pub fn success_percentage(&self) -> f64 {
        if self.clips_total == 0 {
            100.0
        } else {
            (self.clips_relinked as f64 / self.clips_total as f64) * 100.0
        }
    }
}

/// Media reference in a timeline.
#[derive(Debug, Clone)]
pub struct MediaReference {
    /// Media file path.
    pub path: PathBuf,

    /// Clip name.
    pub clip_name: String,

    /// In point in frames.
    pub in_point: u64,

    /// Out point in frames.
    pub out_point: u64,

    /// Track index.
    pub track: usize,

    /// Is video reference.
    pub is_video: bool,

    /// Is audio reference.
    pub is_audio: bool,
}

/// Timeline validation result.
#[derive(Debug, Clone)]
pub struct TimelineValidation {
    /// Total media references.
    pub total_references: usize,

    /// Found references.
    pub found_references: usize,

    /// Missing references.
    pub missing_references: Vec<MediaReference>,
}

impl TimelineValidation {
    /// Check if all references are found.
    #[must_use]
    pub const fn is_valid(&self) -> bool {
        self.missing_references.is_empty()
    }

    /// Get validation percentage.
    #[must_use]
    pub fn validation_percentage(&self) -> f64 {
        if self.total_references == 0 {
            100.0
        } else {
            (self.found_references as f64 / self.total_references as f64) * 100.0
        }
    }
}

/// Timeline format detector.
pub struct TimelineFormatDetector;

impl TimelineFormatDetector {
    /// Detect timeline format from file.
    ///
    /// # Errors
    ///
    /// Returns an error if the file cannot be read.
    pub fn detect(path: &std::path::Path) -> Result<TimelineFormat> {
        // Check file extension
        if let Some(ext) = path.extension() {
            match ext.to_str() {
                Some("fcpxml") => return Ok(TimelineFormat::FinalCutProXml),
                Some("xml") => {
                    // Could be Premiere or FCP
                    // Would need to parse XML to determine
                    return Ok(TimelineFormat::PremiereXml);
                }
                Some("aaf") => return Ok(TimelineFormat::Aaf),
                Some("edl") => return Ok(TimelineFormat::Edl),
                Some("otio") => return Ok(TimelineFormat::Otio),
                _ => {}
            }
        }

        Ok(TimelineFormat::Unknown)
    }

    /// Check if format is supported.
    #[must_use]
    pub fn is_supported(format: &TimelineFormat) -> bool {
        !matches!(format, TimelineFormat::Unknown)
    }
}

/// Timeline format.
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub enum TimelineFormat {
    /// Final Cut Pro XML.
    FinalCutProXml,

    /// Premiere Pro XML.
    PremiereXml,

    /// AAF (Advanced Authoring Format).
    Aaf,

    /// EDL (Edit Decision List).
    Edl,

    /// OpenTimelineIO.
    Otio,

    /// Unknown format.
    Unknown,
}

impl TimelineFormat {
    /// Get format name.
    #[must_use]
    pub const fn name(&self) -> &'static str {
        match self {
            Self::FinalCutProXml => "Final Cut Pro XML",
            Self::PremiereXml => "Premiere Pro XML",
            Self::Aaf => "AAF",
            Self::Edl => "EDL",
            Self::Otio => "OpenTimelineIO",
            Self::Unknown => "Unknown",
        }
    }

    /// Get file extension.
    #[must_use]
    pub const fn extension(&self) -> &'static str {
        match self {
            Self::FinalCutProXml => "fcpxml",
            Self::PremiereXml => "xml",
            Self::Aaf => "aaf",
            Self::Edl => "edl",
            Self::Otio => "otio",
            Self::Unknown => "",
        }
    }
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn test_timeline_conformer() {
        let conformer = TimelineConformer::new();
        let result = conformer.conform_timeline(
            std::path::Path::new("timeline.xml"),
            std::path::Path::new("output.xml"),
        );
        assert!(result.is_ok());
    }

    #[test]
    fn test_timeline_conform_result() {
        let result = TimelineConformResult {
            input_path: PathBuf::from("input.xml"),
            output_path: PathBuf::from("output.xml"),
            clips_relinked: 8,
            clips_failed: 2,
            clips_total: 10,
        };

        assert!(!result.is_success());
        assert_eq!(result.success_percentage(), 80.0);
    }

    #[test]
    fn test_format_detector() {
        let format = TimelineFormatDetector::detect(std::path::Path::new("test.fcpxml"));
        assert!(format.is_ok());
        assert_eq!(
            format.expect("should succeed in test"),
            TimelineFormat::FinalCutProXml
        );

        let format = TimelineFormatDetector::detect(std::path::Path::new("test.edl"));
        assert!(format.is_ok());
        assert_eq!(format.expect("should succeed in test"), TimelineFormat::Edl);
    }

    #[test]
    fn test_format_name() {
        assert_eq!(TimelineFormat::FinalCutProXml.name(), "Final Cut Pro XML");
        assert_eq!(TimelineFormat::Aaf.name(), "AAF");
    }

    #[test]
    fn test_is_supported() {
        assert!(TimelineFormatDetector::is_supported(
            &TimelineFormat::FinalCutProXml
        ));
        assert!(!TimelineFormatDetector::is_supported(
            &TimelineFormat::Unknown
        ));
    }
}